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Tooth Whitening - Europe PMC

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Last Updated: 26 January 2022

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Clinical efficacy of a novel radiofrequency toothbrush for tooth stain reduction and tooth whitening: A randomized controlled trial.

Background To compare with a sonic vibrating toothbrush that received the American Dental Association Seal of Acceptance, the authors aimed to investigate the effect of a novel radiofrequency toothbrush on tooth stains and shades. Participants were randomly assigned to one of two study groups to receive either an RF toothbrush or a sonic vibrating toothbrush, as well as twice-daily toothbrushing with fluoridated toothpaste for six weeks. Using the Lobene Stain Index and VITA Bleachedguide 3D-MASTER shade chart at baseline and after 4 and 6 weeks of toothbrushing, tooth stains and shades were assessed. Conclusions Compared to a powered toothbrush that earned the American Dental Association Seal of Acceptance, the RF toothbrush delivered significant results in tooth whitening and tooth shade reduction. Practical implications The novel RF toothbrush is a safe and effective method for stain removal and tooth whitening, and it can also be used as an alternative to other whitening agents.

Source link: https://europepmc.org/article/MED/34973707


Hydrogen Peroxide Release Kinetics of Four Tooth Whitening Products-In Vitro Study.

Tooth whitening results can be affected by several variables, of which concentration and application time are two of the most significant. This in vitro research was designed to determine the initial content and release kinetics of the hydrogen peroxide content, or the carbamide peroxide content, as converted to its HP equivalent of four tooth whitening products in different concentrations. To determine HP concentration, Titrations of Cerium Sulphate IV were carried out. By a spectrophotometric method, HP release kinetics were measured. The results were reported as the mean values and 95% confidence interval of the percentage of hydrogen peroxide content during release kinetics and 95% confidence interval. All HP products were released at least 85% of HP content, with the exception containing 10% CP containing 10% CP being the lowest product to be released at 85. 49, according to the manufacturer's minimum application times. During the application times specified by the manufacturers, there was a significant HP release in all products.

Source link: https://europepmc.org/article/MED/34947191


Biomimetic tooth-whitening effect of hydroxyapatite-containing mouthrinses after long-term simulated oral rinsing.

Purpose: Objectives: After prolonged application time, we will investigate the tooth-whitening effects of mouthrinses with different amounts of hydroxyapatite particles and compare them to a commercial whitening toothbrush. Methods 50 bovine incisors were stained and randomly divided into five groups: the HAP groups with 3 m, 200 nm, and 50 nm particle size, the commercial whitening mouthrinse group, and the distilled water group. The tooth color changes of individual groups were compared in pairswise Wilcoxon rank-sum tests with BH correction to determine the tooth color changes of individual groups. HAP mouthrinses were whitened after the prolonged application time was confirmed, resulting in the whitening effect. The HAP mouthrinses had similar whitening properties to those in commercial mouthrinses. After the 6-month-equivalent application, the 50 nm HAP group displayed significantly higher E values than the 3 m group. Clinical relevance HAP nanoparticles showed improved tooth-whitening results after a longer period of mouth-rinsing than the micro-sized HAP particles.

Source link: https://europepmc.org/article/MED/35051317


Effect of charcoal dentifrices on tooth whitening and enamel surface roughness.

Purpose: After the use of charcoal dentifrices, tooth color change and surface roughness was determined. Methods Bovine teeth used for color measurements were stained in tea solution and embedded in acrylic resin for color measurements. In acrylic resin and the surface ground flat, another set of bovine teeth used for roughness measurements were embedded in acrylic resin and the surface ground flat. The experimental groups and brushing protocols were the same as for the color assessment component. Surface roughness was determined with a contact type profilometer at baseline and after the last brushing session. However, when compared to the negative control group at 30-day post-brushing and a 1-month follow-up, the hydrogen peroxide group had a significant decline in chroma in the yellow-blue axis. The use of charcoal dentifrices did not have the expected whitening effect, but did not improve enamel surface roughness, according to a journal reviewer.

Source link: https://europepmc.org/article/MED/35051315

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions