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  Free Full Text References 19 Dec 2007


Free Full Text ArticleManagement of exaggerated gag reflex using intravenous sedation in prosthodon...
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Management of exaggerated gag reflex using intravenous sedation in prosthodontic treatment.

Tohoku J Exp Med. 2007 Aug;212(4):373-8

Authors: Yoshida H, Ayuse T, Ishizaka S, Ishitobi S, Nogami T, Oi K

The gag reflex is a somatic natural response in which the body attempts to eliminate instruments or agents from the oral cavity by muscle contraction. Some patients suffered from such severe retching that behavioral techniques did not sufficiently reduce gagging in dentistry. In these patients, pharmacological management was thought to be the last alternative to eliminate the reflex. However, the potential of intravenous (IV) sedation as a way to overcome problems in gagging management during prosthodontic (prosthetic) therapy has not been sufficiently explored. We examined the benefit of IV sedation to facilitate prosthodontic treatment for problematic gagging patients intolerable to dental therapy. The subjects were 10 severely retching patients (7 males and 3 females) who received prosthodontic or restorative therapy under propofol IV sedation. The number, location and prognosis of dentures/restorations were reviewed retrospectively. Eight dentures (3 removable and 5 fixed partial dentures) and 22 restorations (18 crowns and 4 inlays) were seated successfully in the oral cavity without serious complications related to IV sedation. The restored teeth were located predominantly in the posterior regions. Throughout the observation period of at least 6 months, no symptoms of postoperative pain or swelling were found. Five of the 10 patients showed improved tolerance to oral inspection, indicating a behavioral adjustment to dental care. In prosthodontic treatment extended to the posterior regions, propofol IV sedation proved useful in managing reflex control.

PMID: 17660702 [PubMed - indexed for MEDLINE]


Free Full Text ArticleRehabilitation of a marginal mandibulectomy patient using a modified neutral ...
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Rehabilitation of a marginal mandibulectomy patient using a modified neutral zone technique: a case report.

Braz Dent J. 2007;18(1):83-6

Authors: Pekkan G, Hekimoglu C, Sahin N

Anterior edentulous areas usually display unusual soft tissue configurations and compromised bone support in patients with marginal mandibulectomy. There are several treatment modalities for these patients. A removable partial denture may be the treatment of choice. Maximum stability of the partial denture base for mandibulectomy patients may be accomplished by the application of the neutral zone concept, which helps providing stability to the base. This case report describes the fabrication of a removable partial denture for a patient with marginal mandibulectomy using a modified neutral zone technique.

PMID: 17639208 [PubMed - indexed for MEDLINE]


Free Full Text Article[The reconstruction of geometric models of dentition defects based on 3-dimen...
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[The reconstruction of geometric models of dentition defects based on 3-dimensional industrial computed tomography image]

Shanghai Kou Qiang Yi Xue. 2006 Oct;15(5):535-8

Authors: Wu L, Yan HX, Yang M

PURPOSE: A technique on data capture of plaster models for building 3-dimensional geometric models of dentition defects was presented for the purpose of further computer-aided design and manufacture (CAD/CAM)of removable partial denture. METHODS: A plaster model with dentition defects was scanned with low energy X-ray industrial computed tomography (ICT) for ICT image. The data after image processing and vectorization were transferred to a customized reverse engineering software system, and a CAD model of dentition defects was reconstructed. Then a 3-dimensional digital model of removable partial denture framework was created with CAD/CAM software system. Import/export of the data was in STL format. RESULTS: Dense and uniform data points without blind areas were acquired and the structure of the reconstructed CAD model of dentition defects was clean and smooth. CAD model of framework was then obtained. CONCLUSIONS: The method presented is practical for 3-dimensional data capture, and it helps build reliable 3-dimensional geometric models with better spatial resolution and higher precision than conventional technique with medical CT.

PMID: 17348232 [PubMed - in process]


Free Full Text ArticleOral rehabilitation with the new SG attachment in a patient treated for oral ...
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Oral rehabilitation with the new SG attachment in a patient treated for oral squamous cell carcinoma.

Med Oral Patol Oral Cir Bucal. 2007 Mar;12(2):E122-5

Authors: Senent G, Barjau I, Silvestre FJ

In patients who have undergone surgery and radiotherapy for oral squamous cell carcinoma (OSCC), the posterior oral rehabilitation may prove complex. In addition to the defects produced by surgical ablation of the primary tumor, radiotherapy induces deleterious effects upon the oral tissues. We present the case of a 48-year-old male treated two years before due to OSCC in the retromolar trigone and left lateral wall of the oropharynx. Following study of the case with clinical examination and orthopantomography, a management plan was defined involving rehabilitation of the upper dental arch with fixed ceramometallic prostheses, while in the lower arch we chose a unilateral removable prosthesis adapted to a fixed prosthesis by means of a special and versatile attachment based on a new system that functions as a fixed element but which can be removed or changed at some later date. The present clinical case illustrates this type of prosthodontic solution for the management of oncological patients of this kind.

PMID: 17322799 [PubMed - indexed for MEDLINE]


Free Full Text ArticleDo patients have a preference for major connector designs?
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Do patients have a preference for major connector designs?

J Contemp Dent Pract. 2006 Nov 1;7(5):71-9

Authors: Pallegama RW, Namano S, Aridome K, Baba K, Purnaveja S, Ohyama T

AIM: The aim of this research was to evaluate patients' preferences for resin analogs of four major connector designs formulated to have equal rigidity once fabricated in the same alloy. METHODS AND MATERIALS: Nineteen Kennedy Class I or II partially edentulous patients participated at two centers. The four major connector analogs (MCAs) were fabricated for each subject using light-polymerizing acrylic resin. The subjects were asked to wear each of them in the mouth for 30 seconds in six pairs in random order, and to report their preference for each pair. Based on these data, the four analogs were ranked in a descending preference order for each patient. Within-subject comparisons preferences were performed with the Friedman test, and the multiple comparisons were performed with the Wilcoxon Signed Ranks test for data of each sample independently. RESULTS: Statistically significant and consistent preference orders were revealed for both samples, and the thin and wide design was significantly preferred to the thick and narrow design. However, a higher variation was observed for the first preference of each subject. CONCLUSIONS: Subjects demonstrated a tendency to prefer thinner MCAs. However, the individual predilections of patients may not be an appropriate basis for an attempt to find a 'best design' applicable to all patients.

PMID: 17091142 [PubMed - indexed for MEDLINE]


Free Full Text Article[Case report of enterobrosis and diffuse peritonitis caused by a swallowed re...
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[Case report of enterobrosis and diffuse peritonitis caused by a swallowed removable partial denture]

Shanghai Kou Qiang Yi Xue. 2006 Aug;15(4):446-8

Authors: Gu YC, Yuan JM

A female patient, aged 62 years, unexpectedly swallowed a removable partial denture (RPD) during the supper. The doctor failed to take out the RPD from her stomach under the gastroscope during the emergency treatment at the first day. 2 days later, the PRD blocked the intestinal tract and its metal clasps penetrated the wall of the intestine near the ileocecal junction, it soon leaded to enterobrosis and diffuse peritonitis. At last, abdominal operation was conducted to take the RPD out from the intestine and enterobrosis was patched up successfully. Diffuse peritonitis was also cured by intravenous infusion of antibiotics for about 1 week.

PMID: 16955180 [PubMed - in process]


Free Full Text Article[Stress analyses and comparison of the Kennedy III dentition defect restored ...
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[Stress analyses and comparison of the Kennedy III dentition defect restored with removable partial denture]

Shanghai Kou Qiang Yi Xue. 2006 Aug;15(4):388-90

Authors: Wei B, Zhang FQ, Yu LN, Wang CT

PURPOSE: To investigate the stress distribution of the abutment and oral mucosa in Kennedy III, restored with removable partial dentures, either unilateral or bilateral designed. METHODS: Five FEA models were established for the partial edentulous and RPDs, which were divided into group A and group B. According to the denture design, bilateral (B) or unilateral (A) designed. The 3-D finite element analyses were proceeded and calculated with the help of the software ANSYS. Paired t test was used for statistical analysis using SAS 6.2 software package. RESULTS: The maximum stress appeared near the cervical mesial area of the first bicuspid and the second molar. There was no significant difference between the two groups in the stress distribution of the abutment and oral mucosa (P>0.05). CONCLUSION: In regard to the stress of the abutments, unilateral designs have no excess stress formed when RPD was used to restore Kennedy III dentition defect.

PMID: 16955164 [PubMed - in process]


Free Full Text ArticleAcceptability of maxillary major connectors in removable partial dentures.
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Acceptability of maxillary major connectors in removable partial dentures.

Afr Health Sci. 2006 Jun;6(2):113-7

Authors: Arigbede AO, Dosumu OO, Esan TA, Akeredolu PA

Background: The choice of connector lies between plate, a bar or a combination of bars, which may cross the palate in various positions. Many opinions have been expressed concerning the acceptability to the patients of the various forms of palatal connectors but there have been few investigations. Objectives: The aim of this study is to compare subjective patients' reactions to three maxillary major connectors: metal bar, metal plate, and acrylic connectors and to establish the most acceptable and the least acceptable maxillary major connectors. Methods: Fifteen consecutive patients attending the prosthetic out-patient clinic of Dental Center, University College Hospital, Ibadan who had never worn dentures were recruited into the study. Three dentures each with a different maxillary major connector design were fabricated for each patient. A questionnaire was administered to ascertain their reactions to each of the three denture designs. Results: Fourteen patients (93.3%) preferred the denture with metal palatal bar major connector whereas only one patient preferred the denture with acrylic plate major connector design. No patient preferred the palatal metal plate connector design. Conclusions: The metal bar major connector was the most acceptable maxillary major connector while acrylic resin plate was more acceptable than metal plate maxillary major connector. It also confirmed the influence of connector design on patient acceptance of removable partial denture.

PMID: 16916303 [PubMed - in process]


Free Full Text Article[The effects of removable partial dentures on abutment teeth in elder patients]
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[The effects of removable partial dentures on abutment teeth in elder patients]

Shanghai Kou Qiang Yi Xue. 2006 Jun;15(3):276-8

Authors: Li WX, G GT

PURPOSE: To analyse the effects of removable partial dentures on abutment teeth in elder patient and to discuss the reason of the effects and the preventive measures. METHODS: 95 aged patients with removable partial dentures were involved in the investigation, the rate of dental caries, fractures and missing in their abutment and non abutment teeth and the reason were recorded and analysed. X2 test was used for the statistical comparison. RESULTS: The removable partial denture in 5 years after wearing, the dental caries rate of the abutment teeth (17.38%) was significantly higher than the non abutment teeth (7.10%) (P<0.01). The missing abutment teeth (27.01%) extracted because of fracture or loose that made by periodontal disease and dental caries which can not be reserved was significantly higher than that of non abutment teeth (7.79%). CONCLUSION: The effect on abutment teeth of removable partial denture in aged patients were complex and it can increase the rate of dental caries , fracture and missing of abutment teeth.

PMID: 16862361 [PubMed - in process]


Free Full Text Article[Design of geometric models of the removable partial denture framework]
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[Design of geometric models of the removable partial denture framework]

Shanghai Kou Qiang Yi Xue. 2006 Apr;15(2):213-7

Authors: Wu L, Ai HJ, Lv PJ, Wang YP

PURPOSE: The aim of this study was to introduce a method on computer aided design (CAD) of removable partial denture(RPD) framework based on domestic CAD/CAM software system, which contributes to the further research to develop the domestic software system applied in restorative dentistry. METHODS: Point cloud data of a partially edentulous cast, a mandibular Kennedy Class II modification 2 arch, was captured by an optical scanning system with projective grating and high-resolution digital camera. Using domestic CAD/CAM software system, the above point cloud data was reduced, digital surveying line and inserting path were determined. In terms of the principle of clinical design, the tissue surfaces and polishing surfaces of every component of RPD were built such as clasp, rest, lingual bar, and mesh construction, et al. As well as the characteristic structures of the framework, including the half-pear shaped cross section of lingual bar, the internal and external finish lines, the tissue stop at the tissue surface of mesh construction and so on, were fabricated on the base of reduced data model. 3-D surface model of the RPD framework was created. RESULTS: Geometric model of the RPD framework was fabricated successfully, which took on good fitting, high visibility and editing conveniently. And the data converted to STL file format that could be read by any other CAD/CAM software system and was in preparation for subsequent computer aided manufacture (CAM) of RPD framework. CONCLUSIONS: It is suggested that this method based on domestic software in CAD of RPD framework be feasible.

PMID: 16685370 [PubMed - in process]


Free Full Text Article[Study on abutment movement of distal removable dentures retained by attachme...
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[Study on abutment movement of distal removable dentures retained by attachments]

Shanghai Kou Qiang Yi Xue. 2006 Apr;15(2):198-201

Authors: Zhang W, Zhang XF, Han DW

PURPOSE: To study the influence on the abutment movement with three kinds of precision attachments designed for distal-extension removable partial dentures (RPDs). METHODS: Snap attachment, Ceka attachment, Mini-SG attachment were used to retain RPDs. Then food chip was masticated between the upper and lower dentitions on the attachments side. Placement of abutment was measured by LB-72 high-sensitive-laser-traneferring-detector and the data were statistically analyzed for random block analysis of variance. RESULTS: The displacement, inclination, and torsion of the abutment movements in the mesial-distal, bucco-lingual and occluso-gingival directions all had statistical significance (P<0.05). The largest mesial-distal inclination occurred with the Mini-SG attachment. The Ceka attachment produced more abutment displacement in mesial distal and apical directions. Occlusal displacement and anti-clockwise rotation were the least with the Snap attachment. CONCLUSION: The most equitable distribution of stresses on the supporting structures was achieved by Snap attachment with its resilent assemble, Ceka attachment transfers most of the loading forces to the abutments, Mini-SG attachment can not reduce the excessive torque applied to the abutments effectively.

PMID: 16685366 [PubMed - in process]


Free Full Text ArticleProsthetic rehabilitation of a child affected from anhydrotic ectodermal dysp...
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Prosthetic rehabilitation of a child affected from anhydrotic ectodermal dysplasia: a case report.

J Contemp Dent Pract. 2005 Aug 15;6(3):120-6

Authors: Lo Muzio L, Bucci P, Carile F, Riccitiello F, Scotti C, Coccia E, Rappelli G

The aim of this clinical report is to describe the management of a young patient, affected by ectodermal dysplasia, during a nine-year period. Dental treatment can vary depending on the severity of the disease (tooth size, morphology, and amount of available alveolar bone). New technologies, such as adhesive dentistry, and new materials, such as composite resin, represent current options in the management of the dental rehabilitation of patients affected by ectodermal dysplasia. Removable partial dentures were used to replace congenitally missing teeth, and composite resin materials were used to restore conical-shaped maxillary teeth to achieve a favorable esthetic result. This option minimized the sacrifice of healthy dental tissue. Prosthodontic and restorative treatment was provided for the psychological and social comfort of the young patient.

PMID: 16127480 [PubMed - indexed for MEDLINE]


Free Full Text ArticleEffect of direct relining on stresses at the denture base and the metal frame...
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Effect of direct relining on stresses at the denture base and the metal frame of removable partial dentures.

J Contemp Dent Pract. 2005 Feb 15;6(1):37-47

Authors: Al-Ghannam NA, Fahmi FM

The Kennedy Class I removable partial denture (RPD) can cause stress to supporting hard and soft tissues and may lead to harmful effects. The purpose of this study is to investigate the pattern of these stresses in three different positions before and following a relining procedure. Ten patients, five males and five females, with a lower distal extension RPD and an opposing upper class III type RPD were selected for this study. Strain gauges together with a strain gauge indicator were used to study the pattern of stresses in three selected positions. Some changes were significantly different at the site of the denture base and at the metal frame near the direct retainer. After relining, the stresses were shared partially by the abutments and partially by the tissues. Maximum stresses were reported during swallowing. No significant difference was noticed between males and females.

PMID: 15719075 [PubMed - indexed for MEDLINE]


Free Full Text ArticleSocio-demographic factors and edentulism: the Nigerian experience.
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Socio-demographic factors and edentulism: the Nigerian experience.

BMC Oral Health. 2004 Nov 22;4(1):3

Authors: Esan TA, Olusile AO, Akeredolu PA, Esan AO

BACKGROUND: The rate of total edentulism is said to be increasing in developing countries and this had been attributed mainly to the high prevalence of periodontal diseases and caries. Several reports have shown that non-disease factors such as attitude, behavior, dental attendance, characteristics of health care systems and socio-demographic factors play important roles in the aetiopathogenesis of edentulism. The aim of this study was to assess the relationship between socio-demographic factors and edentulism. METHODS: A total of 152 patients made up of 80 (52.6%) males and 72 (47.4%) females who presented in two prosthetic clinics located in an urban and a rural area were included in the study. The relationship between gender, age, socio-economic status and edentulism in this study population was established. RESULTS: No significant relationship between gender and denture demand was noted in the study. The demand for complete dentures increased with age while the demand for removable partial dentures also increased with age until the 3rd decade and then started to decline. A significant relationship was found between denture demand and the level of education with a higher demand in lower educational groups (p < 0.001). In addition, the lower socio-economic group had a higher demand more for prostheses than the higher group. CONCLUSIONS: The findings in this study revealed a significant relationship between socio-demographic variables and edentulism with age, educational level and socio-economic status playing vital roles in edentulism and denture demand.

PMID: 15555072 [PubMed - as supplied by publisher]


Free Full Text Article[Clinical using and observation of occlusion splint of RPD]
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[Clinical using and observation of occlusion splint of RPD]

Shanghai Kou Qiang Yi Xue. 2004 Jun;13(3):230-2

Authors: Zhang DG, Chen RR, Li CQ, Zhang H

PURPOSE: This article describes the design and restoration for 180 cases diagnosed with dentition defect accompanied with medium to severe abrasion and attrition. The purpose of this study is to discuss the rehabilitation of vertical dimension, the balance of occlusion and the whole occlusion system. METHODS: Before clinical preparation of the 180 clinical cases, diagnostic casts were made. Entire restoration treatment plan was adopted to make removable partial dentures with full crown restorations along with occlusion splints. The clinical effect were evaluated at 2nd week, 4th week and 9th week. RESULTS: Of the 180 cases, 148 patients (82.2%) adapted to the denture in 2-3 weeks, 24 patients (13.3%) in 4-5 weeks, 8 patients (14.5%) in 5-6 weeks. The further observation were evaluated over 10-15 years with clinical satisfaction. CONCLUSION: This method not only reserves the tooth structure, but also restores configuration and function of the lost tissues. It's really a constantly effective remedy.

PMID: 15269870 [PubMed - indexed for MEDLINE]


Free Full Text Article[The establishment of 3D-FE model libraries for the elements of the RPD]
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[The establishment of 3D-FE model libraries for the elements of the RPD]

Shanghai Kou Qiang Yi Xue. 2004 Apr;13(2):113-4

Authors: Wei B, Zhang FQ, Yu LN, Wang CT

PURPOSE: To establish the 3D-FE model libraries for the elements of the RPD. METHODS: Based on the 3D geometric model libraries of the RPD and normal stomatognathic system, using the software, such as Powershape,Pro/E and Ansys5.5, transformed data, trimmed models, or rebuilt it, established many kinds of FE model elements, then combine these elements in the whole model, connected and trimmed, at last created several kinds of FE model libraries. RESULTS: This study established eight kinds of FE model libraries, including the occlusal rests, clasps, bases, artificial teeth, and connectors, etc, nearly two hundreds FE model elements. CONCLUSION: The established models have a satisfied geometric configuration; these elements combined well in the whole model, and can be easily call-in and edit.

PMID: 15133553 [PubMed - indexed for MEDLINE]


Free Full Text ArticleComputational models of oral and craniofacial development, growth, and repair.
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Computational models of oral and craniofacial development, growth, and repair.

Adv Dent Res. 2003 Dec;17:61-4

Authors: Hammond P, Hutton T, Maheswaran S, Modgil S

This paper illustrates how biological and clinical problems stimulate research in biomedical informatics and how such research contributes to their solution. The computational models described use techniques from Logic Programming, Machine Learning, Computer Vision, and Biomathematics. They address problems in the development, growth, and repair of oral and craniofacial tissues arising in cell biology, clinical genetics, and dentistry. At the micro-level, the dynamic interaction of cells in the oral epithelium is modeled. At the macro-level, models are constructed of either the craniofacial shape of an individual or the craniofacial shape differences within and between healthy and congenitally abnormal populations. In between, in terms of scale, there are models of normal dentition and the use of computerized expert knowledge to guide the design of dental prostheses used to restore function in partially edentulous patients.

PMID: 15126209 [PubMed - indexed for MEDLINE]


Free Full Text ArticleSwallowed partial dentures.
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Swallowed partial dentures.

J R Soc Med. 2004 May;97(5):254-5

Authors: White H

PMID: 15121822 [PubMed - indexed for MEDLINE]


Free Full Text ArticleSwallowed partial dentures.
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Swallowed partial dentures.

J R Soc Med. 2004 May;97(5):254

Authors: Calder N, McGuinness R

PMID: 15121821 [PubMed - indexed for MEDLINE]


Free Full Text Article[Effect of removable partial denture(RDP) generated occlusal interference on ...
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[Effect of removable partial denture(RDP) generated occlusal interference on masticatory efficiency-A preliminary study]

Shanghai Kou Qiang Yi Xue. 1999 Jun;8(2):86-8

Authors: Ding L, Yang CY, Xu WJ

OBJECTIVE:This study was primarily aimed to observe the effect of RPD-generated occlusal interference on masticatory efficiency.METHODS:In this study,masticatory performances of thirty-six patients treated with removable partial dentures were assessed by peanut-light absorption test before and after occlusal adjustment was performed.Then comparing the differences of masticatory efficiency when occlusal interferences on dentures were present or eliminated.RESULTS:Patients who received occlusal adjustment made significant improvement in their masticatory efficiency (P<0.01). Occlusion appeared to do directly influence chewing ability.CONCLUSION:The results showed that occlusal factor is one of the major factors responsible for denture quality and health of stomatognathic system. Occlusal adjustment is important and necessary in dental prosthesis.

PMID: 15048277 [PubMed - as supplied by publisher]


Free Full Text ArticleThe remineralizing effect of an essential oil fluoride mouthrinse in an intra...
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The remineralizing effect of an essential oil fluoride mouthrinse in an intraoral caries test.

J Am Dent Assoc. 2004 Feb;135(2):231-7

Authors: Zero DT, Zhang JZ, Harper DS, Wu M, Kelly S, Waskow J, Hoffman M

BACKGROUND: The authors conducted a two-week clinical study to determine the remineralizing effect of an experimental mouthrinse containing both fluoride and essential oils in an intraoral caries test model. METHODS: The study used an observer-blinded, randomized, controlled, 3 x 3 crossover design. The authors enrolled in the study 153 subjects, each of whom had a mandibular removable partial denture. Two partially demineralized human enamel specimens were mounted on each subject's removable partial denture. Subjects used either a fluoride mouthrinse with essential oils (the test mouthrinse), a fluoride nonessential oils mouthrinse (the positive control) or an essential oil nonfluoride mouthrinse (the negative control) twice daily for 14 days. The researchers assessed specimens for mineral content change and fluoride uptake using surface microhardness, or SMH, testing and enamel fluoride analysis, respectively. RESULTS: Of the 153 subjects enrolled in the study, 125 subjects were evaluable at the study endpoint. The results after two weeks showed that percentage of SMH recovery was 42 percent in the test group, 36 percent in the positive control group and 16 percent in the negative control group. The fluoride uptake was 19 micrograms per square centimeter, 16 microg/cm2 and 3 microg/cm2 for the test mouthrinse, positive control and negative control groups, respectively. In terms of both percentage of SMH and fluoride uptake, the test mouthrinse and positive control mouthrinse were statistically higher than the negative control mouthrinse, and the test mouthrinse was "at least as good as" the positive control mouthrinse. CONCLUSIONS: This study provides evidence that an essential oil mouthrinse with 100 parts per million fluoride is effective in promoting enamel remineralization and fluoride uptake. CLINICAL IMPLICATIONS: The combination of fluoride and essential oils in a mouthrinse may provide anticaries efficacy, in addition to essential oils' previously established antigingivitis efficacy.

PMID: 15005441 [PubMed - indexed for MEDLINE]


Free Full Text Article[Clinical study of masticatory efficiency of removable partial denture with S...
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[Clinical study of masticatory efficiency of removable partial denture with SJ-1 type bolt attachment]

Shanghai Kou Qiang Yi Xue. 2001 Jun;10(2):100-1

Authors: Dong HB, Zhang FQ

OBJECTIVE: Measurement and analysis of patients wearing dentures with SJ-1 type bolt attachments. METHODS: Select sixteen patients with free end edentulous spaces, restore with removable dentures using SJ-1 type bolt attachments,measure the masticatory efficiency using light-absorption method,and compare them with those of normal occlusion and traditional removable partial dentures. RESULTS: (1)One week after the dentures delivered,the average absorption value of these sixteen patients was 0.876,three weeks later 0.859,one month later 0.985. There was no significant difference among them. (2)Compared with those of normal occlusion, P>0.05,no significant difference;with those wearing traditional dentures, P<0.01,high significant difference. CONCLUSION: The matiscatory efficiency of the patients wearing dentures with SJ-1 type bolt attachments was much better than those of tradition al removable partial dentures.

PMID: 14994027 [PubMed]


Free Full Text Article[The application of 3D geometric modular element for the removable partial de...
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[The application of 3D geometric modular element for the removable partial denture]

Shanghai Kou Qiang Yi Xue. 2002 Sep;11(3):247-9

Authors: Wei B, Yan HQ, Zhang FQ, Wang CT

OBJECTIVE: To discuss the application way for element library of dentition and the removable partial denture. METHODS: With the help of some software, such as PRO/E, POWERSHAPE, etc, design the content and structure of the element libraries reasonably, and discussed the efficiency way of usage. RESULTS: We can use the element libraries by the way of "import-edit",and the way of "element group". CONCLUSION: The structure of the element libraries is reasonable and can run effectively.

PMID: 14983263 [PubMed]


Free Full Text ArticleSwallowed partial dentures.

Swallowed partial dentures.

J R Soc Med. 2004 Feb;97(2):72-5

Authors: Hashmi S, Walter J, Smith W, Latis S

Swallowed or inhaled partial dentures can present a diagnostic challenge. Three new cases are described, one of them near-fatal because of vascular erosion and haemorrhage. The published work points to the importance of good design and proper maintenance. The key to early recognition is awareness of the hazard by denture-wearers, carers and clinicians.

PMID: 14749401 [PubMed - indexed for MEDLINE]


Free Full Text ArticleBroken appointment behavior in a dental school environment.
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Broken appointment behavior in a dental school environment.

J Contemp Dent Pract. 2003 Nov 15;4(4):100-7

Authors: Awartani F

The present study was designed to determine the prevalence of broken appointments of female and male patients scheduled for third, fourth, and fifth year dental students. Data was obtained from computers used for patient scheduling at two campuses of the dental college. The proportion of broken appointments at these facilities was computed using the X2 -test to determine a difference between males and females. Results showed that male patients (14.9%) had a higher proportion of broken appointments than female patients (12.4%). Such differences among gender was statistically significant (p=4.218). The highest percentage of broken appointments was during December of 2001. Thirty four percent of these broken appointments were in the Restorative Clinic at the Darraiyah Campus (DUC) serving primarily male patients and 24% in the Removable Partial Denture Clinic at the Malaz Campus (MUC) serving only female patients. It was concluded the percentage of broken appointment s is considered to be unacceptable because of the negative impact on student learning and, ultimately, their academic progress.

PMID: 14625599 [PubMed - indexed for MEDLINE]


Free Full Text ArticleThe complexities involved with managing the care of an elderly patient.
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The complexities involved with managing the care of an elderly patient.

J Am Dent Assoc. 2003 May;134(5):593-600

Authors: Lindquist TJ, Ettinger RL

BACKGROUND: Treatment planning for and managing the care of elderly patients can be complicated for a number of reasons. To understand the patient's needs, one must understand the environment in which the patient functions. CASE DESCRIPTION: The authors present a case that illustrates some of the social, economic, financial and transportation issues that are involved in treating elderly patients, as well as how the dynamics of the interpersonal relationships influence the final treatment. CLINICAL IMPLICATIONS: A dental treatment plan can be difficult to outline to a patient because modifying factors may make care complex and difficult to manage. This requires good communication among the dentist, patient and family.

PMID: 12785494 [PubMed - indexed for MEDLINE]


Free Full Text ArticleWhat has happened to removable partial prosthodontics?
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What has happened to removable partial prosthodontics?

J Am Dent Assoc. 2003 Jan;134(1):111-3

Authors: Christensen GJ

PMID: 12555966 [PubMed - indexed for MEDLINE]


Free Full Text ArticleRemovable partial denture design: a study of a selected population in Saudi A...
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Removable partial denture design: a study of a selected population in Saudi Arabia.

J Contemp Dent Pract. 2002 Nov 15;3(4):40-53

Authors: Sadig WM, Idowu AT

Determination of the incidence of various classes of removable partial dentures (RPDs) including their designs and their comparison with previous studies provide clinically useful information for dental training and continuing education. The purpose of this study is to determine the pattern of partial edentulism, the major connector, clasping, and design of 740 cobalt chromium RPD frameworks constructed for a selected population in Saudi Arabia. RPD framework design information and patient personal data were obtained from the work authorization form and the dental records respectively. The relationship among age, sex, nationality, and various Kennedy classes of the RPDs was determined by chi-square statistical analysis. Results indicate that Kennedy Class III removable partial dentures were the most frequently constructed. Although gender had no significant relationship, age and nationality had statistically significant relationship with the distribution of various Kennedy classes of removable partial dentures. Lingual bars and anterior posterior palatal straps were the most commonly used mandibular and maxillary major connectors. Lingual and palatal plates, however, were more frequently used than any major connectors for distal extension RPDs. Comparison with previous findings confirms the established variation in designing RPDs. The distribution of partially edentulousness revealed the influence of the general pattern of tooth loss, which could be modified by patient's demands and socio-economic status. Practitioners need to avail themselves fully of basic RPD design principles concerning the most commonly encountered classes of RPDs.

PMID: 12444401 [PubMed - indexed for MEDLINE]


Free Full Text ArticleGood occlusal practice in removable prosthodontics.
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Good occlusal practice in removable prosthodontics.

Br Dent J. 2001 Nov 10;191(9):491-4, 497-502

Authors: Davies SJ, Gray RM, McCord JF

The loss of teeth may result in patients experiencing problems of a functional, aesthetic and psychological nature. This section addresses the very important subject of occlusal considerations for partial and complete dentures. The occlusion is particularly important given the bearing that occlusal factors have, especially on edentulous patients.

PMID: 11726062 [PubMed - indexed for MEDLINE]


Free Full Text ArticleUsing diagnostic impressions to evaluate the fit of existing removable prosth...
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Using diagnostic impressions to evaluate the fit of existing removable prostheses.

J Am Dent Assoc. 2001 Aug;132(8):1128-9

Authors: O'Callaghan MG

PMID: 11575021 [PubMed - indexed for MEDLINE]


Free Full Text ArticleCaries incidence following restoration of shortened lower dental arches in a ...
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Caries incidence following restoration of shortened lower dental arches in a randomized controlled trial.

Br Dent J. 2001 Aug 11;191(3):140-4

Authors: Jepson NJ, Moynihan PJ, Kelly PJ, Watson GW, Thomason JM

CONTEXT: Removable partial dentures used to restore the shortened lower dental arch may adversely affect the remaining natural teeth and are associated with a low prevalence of use. OBJECTIVE: To report the findings for caries incidence 2 years after restoration of lower shortened arches with bilateral cantilever resin-bonded bridges (RBBs) and conventional partial dentures (RPDs). DESIGN: Randomised controlled trial. SETTING: Secondary care PATIENTS: 25 male and 35 female subjects of median age 67 years. were randomly allocated to 'bridge' and 'denture' treatment groups of 30 patients each matched for age and sex. Caries incidence was recorded during dental examinations 3 months, 1 and 2 years after insertion of new lower prostheses. INTERVENTIONS: Cantilever RBBs and conventional RPDs with cast metal frameworks. RESULTS: There was a highly significant difference in the frequency of new caries lesions, 11 and 51 in the bridge and denture groups respectively (P < 0.01). 20 out of 27 bridge patients and 9 of 23 denture patients had no caries experience. Multivariate modeling identified treatment group as the only significant predictor of caries occurrence. CONCLUSIONS: Two years after restoration of lower shortened arches for an elderly sample of patients, there was a significantly greater incidence of new and recurrent caries lesions in subjects restored with RPDs compared with cantilever RBBs.

PMID: 11523885 [PubMed - indexed for MEDLINE]


Free Full Text ArticleA three-part bilateral swinglock design denture revisited.
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A three-part bilateral swinglock design denture revisited.

Br Dent J. 2001 May 26;190(10):538-40

Authors: Barclay CW, Russell MD, Murphy P

This case was first reported by one of the authors in 1987, subsequent to the patient being treated using a combination of a hinge and split pin sectional denture. The same patient attended for review some 14 years later for assessment of this denture at which stage a replacement was made.

PMID: 11411888 [PubMed - indexed for MEDLINE]


Free Full Text ArticleTooth preparation.
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Tooth preparation.

Br Dent J. 2001 Mar 24;190(6):288-94

Authors: Davenport JC, Basker RM, Heath JR, Ralph JP, Glantz PO, Hammond P

This final article in the series describes the modification of teeth to improve their shape for the support and retention of RPDs.

PMID: 11325154 [PubMed - indexed for MEDLINE]


Free Full Text ArticleInitial prosthetic treatment.
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Initial prosthetic treatment.

Br Dent J. 2001 Mar 10;190(5):235-44

Authors: Davenport JC, Basker RM, Heath JR, Ralph JP, Glantz PO, Hammond P

This article describes measures designed to provide short-term solutions to existing RPD problems and to establish an optimum oral environment for the provision of definitive prostheses.

PMID: 11303684 [PubMed - indexed for MEDLINE]


Free Full Text ArticleConnectors.
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Connectors.

Br Dent J. 2001 Feb 24;190(4):184-91

Authors: Davenport JC, Basker RM, Heath JR, Ralph JP, Glantz PO, Hammond P

This article describes the types and functions of connectors for RPDS. It also considers the relative merits and limitations of these connectors.

PMID: 11270385 [PubMed - indexed for MEDLINE]


Free Full Text ArticleTreatment of the edentulous mandible.
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Treatment of the edentulous mandible.

J Am Dent Assoc. 2001 Feb;132(2):231-3

Authors: Christensen GJ

PMID: 11217598 [PubMed - indexed for MEDLINE]


Free Full Text ArticleClasp design.
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Clasp design.

Br Dent J. 2001 Jan 27;190(2):71-81

Authors: Davenport JC, Basker RM, Heath JR, Ralph JP, Glantz PO, Hammond P

PMID: 11213338 [PubMed - indexed for MEDLINE]


Free Full Text ArticleProsthodontics is in your future.
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Prosthodontics is in your future.

J Am Dent Assoc. 2000 May;131(5):671-2

Authors: Christensen GJ

PMID: 10832262 [PubMed - indexed for MEDLINE]


Free Full Text ArticleThe role of orthognathic surgery in the treatment of severe dentoalveolar ext...
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The role of orthognathic surgery in the treatment of severe dentoalveolar extrusion.

J Am Dent Assoc. 1999 Nov;130(11):1619-22

Authors: Rosen PS, Forman D

BACKGROUND: When mandibular molars are not replaced after extraction, the long-term problem of inadequate interarch space for either a fixed or removable prosthesis can occur. In the past, practitioners needed to decide whether to shorten the teeth, extract the supererupted maxillary molars to recapture space or leave the area unrestored. The authors present another option. CASE DESCRIPTION: A 61-year-old man was referred to a periodontist by his general dentist for placement of mandibular implants in the posterior sextant. Extreme supereruption of the maxillary dentoalveolar segment prevented restoration of the opposing edentulous area. An oral and maxillofacial surgeon performed a segmental osteotomy of the posterior right maxilla to gain needed interarch space. After the osteotomy was stabilized, the periodontist placed implants that were subsequently restored with a fixed prosthesis. CLINICAL IMPLICATIONS: The role of orthognathic surgery in treatment planning should not be overlooked in the comprehensive management of severe extrusion. It offers patients the opportunity to gain both function and esthetics that might otherwise be impossible.

PMID: 10573942 [PubMed - indexed for MEDLINE]


Free Full Text ArticleThe altered cast impression technique revisited.
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The altered cast impression technique revisited.

J Am Dent Assoc. 1999 Oct;130(10):1476-81

Authors: Feit DB

BACKGROUND: The altered cast impression technique of fabricating removable partial dentures, originally described more than 60 years ago, improves the residual-ridge-to-dentition relationship of the prosthesis. This potentially increases patient satisfaction while preserving the remaining supporting structures. LITERATURE REVIEWED: This article reviews research that evaluated abutment tooth movement as a result of the relationship of the denture base to the residual ridge, revealing that improved fit reduced tooth movement. Load distribution studies have shown that a well-fitting denture base distributes stresses favorably to the supporting bone and abutment teeth. Other studies showing that increased residual ridge coverage coupled with a well-fitting denture base reduces stress per unit area, potentially preserving the remaining supporting structures. CASE DESCRIPTION: The article describes a patient who had a unilateral distal extension removable partial denture that was fabricated after the failure of a 20-year-old partial denture due to extensive dental decay. The prosthesis was fabricated over the course of four appointments, and the prosthesis was delivered on the fifth appointment. The patient, who wears the prosthesis daily, expressed comfort and ease of use at a one-year recall examination. CLINICAL IMPLICATIONS: Distal extension edentulism can affect a patient's ability to function as a dentate person. A well-made removable partial denture that has appropriate extensions, borders and ridge-to-dentition relationship will benefit the partially edentulous patient by providing increased comfort and improved dental function.

PMID: 10570592 [PubMed - indexed for MEDLINE]


Free Full Text ArticleCustom occlusal template as an insertion guide for precision removable partia...
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Custom occlusal template as an insertion guide for precision removable partial dentures.

J Am Dent Assoc. 1999 Aug;130(8):1200-1

Authors: Sreter R

PMID: 10491931 [PubMed - indexed for MEDLINE]


Free Full Text ArticleHow dentition status and masticatory function affect nutrient intake.
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How dentition status and masticatory function affect nutrient intake.

J Am Dent Assoc. 1998 Sep;129(9):1261-9

Authors: Krall E, Hayes C, Garcia R

The authors examined nutrient intake in relation to the number of teeth, denture type and masticatory function among 638 men in the U.S. Department of Veterans Affairs Dental Longitudinal Study. They found that calorie-adjusted nutrient intakes decreased with progressively impaired dentition status, independently of age, smoking status and alcohol use. Intakes of fiber and most vitamins and minerals were inversely correlated with masticatory function. The findings suggest that prevention of tooth loss and prosthodontic replacement of missing teeth could improve diets of older adults.

PMID: 9766107 [PubMed - indexed for MEDLINE]


Free Full Text ArticleSurvival rates of teeth adjacent to treated and untreated posterior bounded e...
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Survival rates of teeth adjacent to treated and untreated posterior bounded edentulous spaces.

J Am Dent Assoc. 1998 Aug;129(8):1089-95

Authors: Shugars DA, Bader JD, White BA, Scurria MS, Hayden WJ, Garcia RI

It is widely assumed that if posterior bounded edentulous spaces, or BESs, are not treated, the adjacent teeth ultimately will be lost. The authors examined this assumption by determining the survival of teeth adjoining 569 treated and untreated BESs. In the short term, the assumption was not supported. The great majority of untreated BESs did not result in loss of an adjacent tooth. Treatment with a removable partial denture did not increase the likelihood of adjacent tooth survival, while treatment with a fixed partial denture did result in modestly improved survival of adjacent teeth.

PMID: 9715009 [PubMed - indexed for MEDLINE]


Free Full Text ArticlePhased-in comprehensive care: a concept and case report.
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Phased-in comprehensive care: a concept and case report.

J Am Dent Assoc. 1998 Jan;129(1):98-102

Authors: Appelbaum MB, Arvay JM

A complicated case often requires a multidisciplinary approach. But such an approach makes it difficult for the practitioner to offer the patient a definitive treatment plan. This article outlines the concept of a phased-in comprehensive treatment plan and reports on a case in which such a plan was used successfully.

PMID: 9448354 [PubMed - indexed for MEDLINE]


Free Full Text ArticleA simple technique for adjusting a removable prosthesis.
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A simple technique for adjusting a removable prosthesis.

J Am Dent Assoc. 1996 Dec;127(12):1786

Authors: Silberman DM

PMID: 8990750 [PubMed - indexed for MEDLINE]


Free Full Text ArticleThree cases of dental technician's pneumoconiosis related to cobalt-chromium-...
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Three cases of dental technician's pneumoconiosis related to cobalt-chromium-molybdenum dust exposure.

Chest. 1996 Mar;109(3):837-42

Authors: Selden A, Sahle W, Johansson L, Sorenson S, Persson B

Dental technician's pneumoconiosis (DTP) is a rather recent finding in subjects exposed to the dust generated in dental laboratories producing metal-framed removable partial dentures from alloys based on cobalt, chromium, and molybdenum. This study presents details of the first three Swedish cases of DTP with some emphasis on the diagnostic procedures and the dust exposure. A follow-up of at least 5 years from diagnosis is included.

PMID: 8617099 [PubMed - indexed for MEDLINE]


Free Full Text ArticleMaking better removable partial dentures.
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Making better removable partial dentures.

J Am Dent Assoc. 1995 Jul;126(7):1041-4

Authors: Christensen GJ

PMID: 7629348 [PubMed - indexed for MEDLINE]


Free Full Text ArticleHypermineralization of dentinal lesions adjacent to glass-ionomer cement rest...
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Hypermineralization of dentinal lesions adjacent to glass-ionomer cement restorations.

J Dent Res. 1995 Jun;74(6):1266-71

Authors: ten Cate JM, van Duinen RN

Previous reports have shown a release of fluoride from glass-ionomer cement (GIC) restorations into the oral fluids. Fluoride in the ambient fluids has a caries-preventive effect by enhancing remineralization and inhibiting demineralization of the dental hard tissues. Therefore, the current investigation was undertaken to determine whether GIC fillings could contribute to the remineralization of caries lesions in dentin. Small circular preparations were made in disks of dentin which had incipient caries-like lesions in the remaining tissue. The preparations were filled with amalgam or composite materials (as controls) or with GIC. The specimens thus contained a restoration close to a dentinal caries-like lesion. The specimens were placed contralaterally in the buccal surfaces of removable partial dentures and were worn intra-orally by volunteers for a 12-week experimental period, after which the specimens were sectioned and analyzed by microradiography. All specimens with GIC restorations exhibited hypermineralization in the tissue bordering the filling and in the wall of the preparation which had been in contact with the restoration. The (caries-like) lesions were remineralized, even under conditions of heavy plaque formation. In contrast, specimens with amalgam or composite restorations showed further extensive demineralization. This study demonstrates a significant remineralization potential exerted by the fluoride-releasing GIC restorative material. Consequently, the choice of the restorative material might be crucial for the occurrence or prevention of recurrent caries around restorations.

PMID: 7629335 [PubMed - indexed for MEDLINE]


Free Full Text ArticleRelining, rebasing partial and complete dentures.
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Relining, rebasing partial and complete dentures.

J Am Dent Assoc. 1995 Apr;126(4):503-6

Authors: Christensen GJ

PMID: 7722112 [PubMed - indexed for MEDLINE]


Free Full Text ArticleEffects on demineralization of enamel by fluoridated sucrose: a pilot study i...
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Effects on demineralization of enamel by fluoridated sucrose: a pilot study in an in situ caries model.

Adv Dent Res. 1995 Feb;9(1):9-13

Authors: Carlsson P, Angmar-M&#xE5;nsson B, Redmo-Emanuelsson IM, Anderssén K

Blocks of human enamel, placed in removable partial dentures, were allowed to acquire natural plaque for seven days and were exposed extra-orally to a cariogenic challenge by repeated periods in a fluoride-sucrose solution. As a control, enamel blocks were exposed extra-orally to a sucrose solution. After two weeks of cariogenic challenge, the blocks were examined for mineral loss by quantitative microradiography on thin sections of the enamel. The results from six subjects showed that no significant effect on demineralization could be detected by the addition of fluoride corresponding to fluoride/sugar content of 1 mg/kg, 5 mg/kg, or 10 mg/kg (dry weight). One subject did not develop lesions at all, either with fluoride-sucrose or with sucrose exposure alone.

PMID: 7669218 [PubMed - indexed for MEDLINE]



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