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Investigation the effects of whitening toothpastes on color change of resin‐based CAD / CAM blocks
Author(s) -
Aydın Numan,
Karaoglanoglu Serpil,
Oktay Elif Aybala
Publication year - 2021
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/jerd.12627
Subject(s) - toothpaste , color difference , significant difference , pigment , dentistry , chemistry , materials science , food science , mathematics , medicine , computer science , artificial intelligence , enhanced data rates for gsm evolution , statistics , organic chemistry
Some colorant foods and beverages cause undesired discoloration on dental restorations. The aim of this study was to investigate the effect of whitening kinds of toothpaste with different active ingredients on the color change of resin‐based CAD/CAM blocks. Material and methods In the study, resin‐based CAD/CAM block samples sized 1.5 × 7 × 12 mm, were prepared. Then, to simulate the time‐dependent color change, the samples were immersed in coffee (Nescafe Classic, Nestlé) for 14 days. After the color change values of the samples colored in coffee were measured by spectrophotometer, the samples were brushed with different types of whitening toothpastes for 4 minutes. Statistical analysis of the color change (Δ E 00 ) was performed using the one‐way analysis of variance (ANOVA). Results Color differences occurring on all resin‐based CAD/CAM blocks immersed in coffee for 14 days exceeded the 50%:50% perceptibility threshold (PT) (Δ E 00 :0.8). There was no statistical significant difference between the whitening toothpastes containing activated charcoal, hydrogen peroxide (HP), blue covarine pigment, and microparticles in color improvement on resin‐based CAD/CAM blocks ( P > .05). Conclusion It has been verified that the discoloration on resin‐based CAD/CAM blocks exhibiting color difference above the PT after coffee immersion can be reduced by utilizing toothpastes containing whiteners. Clinical significance Color changes that occur over time in resin‐based CAD/CAM blocks can be a clinical problem. These color changes in the materials can be reduced below the PT level using whitening toothpastes.