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Efficacy of tooth whitening with different calcium phosphate‐based formulations
Author(s) -
Jin Jian,
Xu Xiaohui,
Lai Guangyun,
Kunzelmann KarlHeinz
Publication year - 2013
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/eos.12063
Subject(s) - tooth whitening , dentistry , calcium , phosphate , chemistry , orthodontics , medicine , materials science , metallurgy , biochemistry
The aim of this in‐vitro study was to evaluate the efficacy of tooth whitening using different calcium phosphate‐based formulations. Teeth were treated with three different hydroxyapatite preparations at different concentrations and with two control preparations; each tooth was treated a total of three times. After application of the last material, hydrodynamic shear force was applied to mimic mechanical loading. After each treatment, tooth color was measured using a dental spectrophotometer, and the mean changes in L*a*b* values between different measurements were expressed as ∆E. The results indicated significant differences between the materials, but neither dose‐ nor time‐dependent associations were found. The suspension containing tricalcium phosphate (10 wt%) showed the most obvious color change (∆E = 2.20 ± 0.90), while the suspension containing zinc‐carbonate‐apatite (20 wt%) showed the least obvious color change (∆E = 0.91 ± 0.50). Calcium phosphate‐based formulations that can adhere to the enamel surface and contribute to tooth whitening have promising tooth‐whitening potential.