Abstract
Dentin hypersensitivity is a common painful condition observed in clinics. Dietary habits have been much associated with its development and persistence during and following periodontal treatment. The aim of this in vitro study was to evaluate the influence of vinegars on the removal of smear layer and exposure of dentinal tubules. Extracted human teeth were submitted to manual scaling with Gracey curettes in order to remove the cementum as well as to form a smear layer. Dentin samples with 3 mm(2) were obtained and distributed into six experimental groups: one control and five types of vinegars (alcohol, apple, rice, white wine and balsamic). Each group included two methods of vinegar application: topical and friction. After routine preparation for SEM analysis, photomicrographs were assessed by a calibrated and blind examiner using an appropriate index system. Kruskal-Wallis test indicated a significant influence of vinegars on smear layer removal. There was a statistically significant difference between groups treated with apple, white and rice vinegars and the control group (p < 0.05). Nevertheless, Mann-Whitney test indicated that removal of smear layer did not vary with the method of application (topical versus friction) for any of the tested substances. We can conclude that the contact of vinegar may remove smear layer and expose dentinal tubules, regardless of the type of application. However, balsamic vinegar was associated with less removal of smear layer after both methods of application.
Highlights
Studies on the prevalence of dentin hypersensitivity show that this condition is not an uncommon problem among the adult population
The Kruskal-Wallis test indicated a significant difference between substances (H = 13.197, p = 0.021), and post hoc paired comparisons demonstrated that alcohol, apple and rice vinegars were significantly different from the negative control group (p < 0.05)
According to Pashley[11] (1992), during root planing, cementum and some dentin are removed, the dentinal tubules remain occluded by smear layer created during manipulation of the root surface
Summary
Studies on the prevalence of dentin hypersensitivity show that this condition is not an uncommon problem among the adult population. According to Azevedo[4] (1994), six in ten patients have been reported to suffer from cervical dentin hypersensitivity; Sobral et al.[14] (1995) reported approximately one in six patients. All tooth types may be affected, but canines and premolars in both jaws are the most frequently involved teeth. The influence of vinegars on exposure of dentinal tubules: a SEM evaluation. Braz Oral Res 2004;18(1):[63-8]
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