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The Effect of Delivery System and Light Activation on Tooth Whitening Efficacy and Hydrogen Peroxide Penetration.
- Source :
-
Journal of Esthetic & Restorative Dentistry . Sep/Oct2016, Vol. 28 Issue 5, p313-320. 8p. 2 Charts, 2 Graphs. - Publication Year :
- 2016
-
Abstract
- ABSTRACT Purpose To evaluate the whitening efficacy of a new two-layer technology in-office system compared to a conventional gel-type system and determine hydrogen peroxide penetration (HPP) into the pulp cavity. Materials and Methods Extracted molars ( n = 60) were assigned to group NC: glycerol gel; group QPRO: 20% HP varnish (Zoom Quick Pro, Philips Oral Healthcare); group ZOOM_NL: 25% HP gel (Zoom Chairside Whitening); and group ZOOM_WL: 25% HP gel (Zoom Chairside Whitening) with light-activation. HPP levels were estimated with leucocrystal-violet and horseradish-peroxidase. Instrumental color measurements were performed at baseline ( T0), 1-day post first whitening ( T1), 1-day post second whitening ( T2), 1-day post third whitening ( T3), and 1-month post whitening ( T4). One-way analysis of variance followed by post hoc Tukey's HSD test was performed to detect difference in Δ E* and HP penetration levels (α = 0.05). Results Δ E* of NC was lower than other groups, whereas Δ E* of ZOOM_WL was greater than the other three groups, at T3 and T4. Mean HPP level obtained from ZOOM_WL (1.568 ± 0.753 μg/mL) was significantly greater than those obtained from the other groups, whereas the mean HPP level observed in NC group (−0.131 ± 0.003 μg/mL) was significantly lower than the other groups. Conclusions Tooth whitening efficacy and HPP levels vary based on whitening systems used. CLINICAL SIGNIFICANCE The two-layer technology in-office varnish system may be an alternative whitening option to reduce chair time in the office. (J Esthet Restor Dent 28:313-320, 2016) [ABSTRACT FROM AUTHOR]
- Subjects :
- *COLOR
*STATISTICAL correlation
*DENTAL materials
*HYDROGEN peroxide
*MOLARS
*PAINT
*PROBABILITY theory
*RESEARCH funding
*STATISTICAL sampling
*SPECTROPHOTOMETRY
*STATISTICS
*TOOTH whitening
*DATA analysis
*REPEATED measures design
*DATA analysis software
*DESCRIPTIVE statistics
*ONE-way analysis of variance
Subjects
Details
- Language :
- English
- ISSN :
- 14964155
- Volume :
- 28
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Esthetic & Restorative Dentistry
- Publication Type :
- Academic Journal
- Accession number :
- 118513239
- Full Text :
- https://doi.org/10.1111/jerd.12238