The use of a profilometer for both quantitative and qualitative measurements of toothpaste abrasivity

作者：Liljeborg A^*; Tellefsen G; Johannsen G

来源：International Journal of Dental Hygiene, 2010, 8(3): 237-243.

DOI：10.1111/j.1601-5037.2009.00433.x

• profilometer
• RDA-value
• toothpaste abrasivity

Aim: To evaluate the abrasivity of different toothpastes both quantitatively and qualitatively with a profilometer technique and to correlate these findings to the radioactive dentin abrasivity (RDA) value. Materials and methods: Acrylic plates were exposed to brushing in a brushing machine with 11 different toothpastes. The results were evaluated using a profilometer. A surface roughness value (Ra-value), that is, a qualitative measurement, and also a volume value, that is, a quantitative measurement, were calculated from the profilometer results. These values were then correlated to each other and to the RDA-value. A comparison between RDA, Ra and volume measurements was performed using linear fitting procedure. Results: The results showed that the correlation between RDA and Ra measurements was low (R-2 = 0.04) and also that the correlation between RDA and volume measurements was low (R-2 = 0.00002). Correlation between Ra and abraded volume was high (R-2 = 0.87). Conclusions: It is important to consider not only the RDA-value when evaluating toothpaste abrasivity. From the profilometer results both a quantitative (volume) and qualitative (roughness) measurement of the abrasivity of a toothpaste can be obtained.

• 出版日期2010-8