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The effect of whitening dentifrices on wear
and surface roughness of resin composites
Authors :
- Nattakarn Wongprateepsiri D.D.S.
- Vasana Patanapiradej D.D.S., High Grad Dip. (Endodont), M.D.S., Thai board (Oper. Dent)
Abstract :
Objective The purpose of this study was to investigate wear and surface roughness of 4 types of resin
composite after brushing using 4 products of whitening dentifrice.
Materials and methods Sixty-four specimens of each resin composite: nanofill (Filtek Z350 XT),
nanohybrid (Herculite Ultra), microfill (Durafill VS) and microhybrid (Filtek Z250) were made using
metal molds. Each type of resin composite was divided into 4 groups of 16 specimens according to 4
products of whitening dentifrices: Sparkle White, Fluocaril Healthy Whitening, Colgate Advanced
Whitening and Sensodyne Whitening. The volume and surface roughness were measured using a
profilometer before and after brushing in a brushing machine with a load of 300 grams, speed of 90
strokes per minute, at 20,000 strokes. Results were analyzed by two-way ANOVA and Tamhaneûs test
at a significant level of 0.05.
Results After brushing with all dentrifrices, Durafill VS showed significantly different wear and
surface roughness from Herculite Ultra, Filtek Z350 XT and Filtek Z250 (p < 0.05). Sensodyne
Whitening produced more wear of resin composites than Sparkle White, Colgate Advanced Whitening
and Fluocaril Healthy Whitening. Sensodyne Whitening, Sparkle White and Colgate Advanced
Whitening produced more surface roughness of resin composites than Fluocaril Healthy Whitening.
Conclusion Durafill VS showed the most wear and surface roughness when brushed with all whitening
dentifrices. Sensodyne Whitening, Sparkle White and Colgate Advanced Whitening produced more
wear and surface roughness of resin composites than Fluocaril Healthy Whitening.
(CU Dent J. 2012;35:105-18)
Keywords :
resin composites; surface roughness; toothbrush abrasion; wear; whitening dentifrices
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