Abstract
Objectives This study aimed to evaluate nanosized eggshell–titanium dioxide (EB@TiO2) abrasiveness in comparison with calcium carbonate and hydrated silica-containing
toothpaste.
Material and Methods Thirty-five bovine tooth enamels were prepared, and specimens randomly assigned to
a sample group of five (n = 7), namely, Colgate regular, Colgate pro-relief, Sensodyne rapid relief, Sensodyne
repair, and EB@TiO2. Half of the enamel surface was brushed with each respective sample group, while
the other half was covered with a tap.
Statistical Analysis The mean roughness value (Ra) of the brushed and covered halves were measured using
an atomic force microscope (AFM). To assess the surface morphology and changes, a
scanning electron microscope (SEM) was performed. Using pair sample test and ANOVA,
the Ra for the entire specimens were analyzed. A Bonferroni correction was used to
identify the mean differences among the five groups (α=.05).
Results The findings from this analysis show that all the tested toothpaste abraded the enamel
significantly (p < 0.05). The abrasive value contained in toothpaste comprising calcium carbonate
was lower than the silica toothpaste hydrated.
Conclusion Overall, Colgate regular had the lowest toothpaste abrasivity, followed by EB@TiO2,
while Sensodyne rapid relief had the most enamel wear. The prominent feature of this
study suggests that EB@TiO2 is suitable for oral use, as its abrasivity is comparable
with calcium carbonate-containing toothpaste.
Keywords
abrasivity - enamel - toothpaste - Atomic Force Microscope
