In vitro evaluation of the abrasiveness of a commercial low-abrasive dentifrice and an experimental dentifrice containing vegetable oil|
Young, Alciara Alice de Aguiar; Saliba, Nemre Adas; Consani, Simonides & Sinhoreti, Mario Alexandre Coelho
Toothpastes usually contain detergents, humectants, water, colorant,
fluoride and thickeners (e.g.: silica). Tooth wear has a multi-factorial
etiology and the use of abrasive dentifrices is related to abrasion of
dental tissues during toothbrushing. This study evaluated in vitro the
abrasiveness of a commercial silica gel low-abrasive dentifrice compared
to an experimental dentifrice containing vegetable (almond) oil. Distilled
water served as a control group. Acrylic specimens (8 per group) were
submitted to simulated toothbrushing with slurries of the commercial
dentifrice, experimental dentifrice, almond oil and water in an automatic
brushing machine programmed to 30,000 brush strokes for each
specimen, which is equivalent to 2 years of manual toothbrushing.
Thereafter, surface roughness (Ra) of the specimens was analyzed
with a Surfcorder SE 1700 profilometer. Data were analyzed
statistically by ANOVA and Tukey's test at 5% significance level.
There was no statistically significant difference (p>0.05) in the surface
roughness after brushing with water, almond oil or experimental
dentifrice. The commercial dentifrice produced rougher surfaces
compared to the control and abrasive-free products (p<0.05). Further
studies are necessary to confirm the potential benefits of using vegetable
oil in toothpastes as an alternative to abrasives in an attempt to
minimize the tooth wear caused by toothbrushing.
toothpaste, dentifrice, abrasives, toothbrushing, vegetable oil, tooth wear.