A Profilometric Study To Assess The Role Of Non-Coated And Four Different Types Of Coated Toothbrushes In The Abrasion Process On Enamel Surface -An In-Vitro Study

Abstract

Background: The aim of this study was to evaluate role of noncoated and four coated toothbrushes in the abrasion process of enamel surface .

Materials and methods: Thirty freshly extracted human premolar teeth were used for this study. Teeth were sectioned horizontally at the level of CEJ to obtain the crown portion. Buccal portion of the teeth were mounted on acrylic bases and polished with pumice to clear off all the debris. The specimen were divided into 5 groups with 6 specimens in each group. Group 1 specimen were brushed with neem coated toothbrush, Group 2 with charcoal coated , Group 3 with antimicrobial coated, Group 4 with Nano mineral coated and Group 5 with non-coated nylon bristle toothbrush as control group. Customised brushing model was used to deliver uniform force. Brushing was carried out for each specimen for a duration of 2 minutes, twice a day, for 60 days, without toothpaste with standardized uniform diameter of 0.2 mm with soft bristles and in uniform movement. Profilometric analysis was carried out to measure the average surface roughness after brushing and the values were compared to assess surface abrasion. Paired t test and ANOVA was performed. Level of significance was set at  p<0.05 .

Results: The results showed that Nano mineral-coated toothbrushes caused more abrasion than charcoal, neem and antimicrobial-coated toothbrushes The mean surface roughness in group 4 (Nano-mineral coated toothbrush) was 6.3617 ± 0.3981 which was found to be the maximum. The difference between all five groups was highly significant [p < 0.01].

Conclusion: The study concluded that coated toothbrushes cause significantly more abrasion as compared to non-coated (nylon) toothbrushes.