Vital Tooth Whitening
Vital tooth whitening, when administered correctly, is by all accounts one of the safest, most conservative, least expensive, and most effective aesthetic procedures currently available to patients. This article traces the evolution of the technology, describes what is known about the mechanism of action and explores such issues as toxicology and side effects associated with tooth whitening. The article also describes the various tooth-whitening systems, which include dentist-supervised night-guard bleaching, in-office or power bleaching, and bleaching with over-the-counter bleaching products. Combination treatments and light-activated treatments are also discussed. Finally, the article summarizes the areas of research needed in this field.
read more free articleGuidelines for the selection of tooth whitening products amongst those available on the market.
BACKGROUND: Several tooth whiteners are available on the market, and the ideal choice should be determined by efficacy and optimal clinical results. OBJECTIVES: The purpose of this study was to compare the reported clinical success rates of different tooth whitening products. SEARCH STRATEGY: The relevant literature (1998 - 2011) was studied, using as sources the databases: Google Scholar, Science Direct, Medline and Pubmed. Selection criteria: The material was clearly identified, the manufacturers' instructions were respected and the sample size stated. RESULTS AND CONCLUSIONS: This descriptive report on 49 papers focuses on the total colour change, measured with a calibrated shade guide and also numerically (colourimeter, chromameter or spectrophotometer), the relapse of the colour change and tooth sensitivity. In general, the dentist-supervised at-home bleaching and the in-office treatment gave approximately the same initial percentage improvement of tooth whitening. However, the relapse after a four week or longer period was significantly higher for the in-office treatment. The treatment of choice should be a dentist supervised at-home bleaching product which generally contains approximately 10% carbamide peroxide applied over about 14 days for about eight hours per night. Tooth sensitivity should not be a general problem although some subjects might choose to discontinue treatment as a result of sensitivity.
read more free articleTooth Whitening: Addressing the Sensitivity Problem
Most of us fear the inevitable reality of growing old and losing our youthful vivacity.
Nowhere is this more apparent than with that infamous demographic group, the baby
boomers. With the dominance of this group in the population, the demand has grown
exponentially for all types of cosmetic procedures. Plastic surgery, personal trainers, hair
coloring, and hair transplants are but a few of the procedures this ravenous group demands
daily in its search for sustained youth.
read more free articleColor Stability of Bleached Teeth over Time: An In Vitro Study
Objectives: the aim of this study was to evaluate the in vitro color stability of bleached teeth by means of a 6-day staining procedure. Materials and methods: 20 caries-free human mandibular incisors were randomly divided into two groups. Test group: a bleaching agent (Zoom 2, Discus Dental) was applied to the labial surfaces following the manufacturer's instructions. Control group: no bleaching treatment. Using a thermo-cycling device, all teeth were alternately immersed in a 0.9% saline solution at 37°C for 1 hour, and in a coffee solution at 55°C for another hour, in order to simulate the natural tooth-staining process. This procedure was repeated 12 times a day for 6 days. Teeth were polished once a day with a rubber cup and polishing paste. CIELAB color variables (L, a, b) were assessed by means of a spectrophotometer (VITA Easyshade®) and a custom alignment device at baseline, after bleaching , and once a day throughout the 6-day staining treatment. The bleaching result and the color stability of beached and control group teeth were assessed by matched pair t test and MANOVA. Results: the bleaching agent had a significant whitening effect. The staining treatment did not produce any significant color change on bleached teeth, which maintained the same whiteness achieved after the bleaching treatment. The staining treatment did not produce any significant color change on control teeth. The two groups showed significant differences in both whiteness and lightness changes as a result of the polishing treatment. Conclusions: the Zoom 2 whitening agent produced immediate and long-lasting bleaching results, even if the reduction of b value mainly occurred 24 and 48 hours after the bleaching treatment.
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