The relation of bruxism with teeth attrition and condylar asymmetry : clinical and radiological assay

الملخص EN

The paper aims to evaluate the effect of teeth wear severity associated with bruxism on the condylar height asymmetry index among different gender using panoramic radiograph viewing technique.

Materials and methods : One hundred fifty subjects were participate in this study.

Seventy five were bruxers and seventy five were non-bruxers.

Degree of tooth wear severity was graded using Smith and Knight method.

The panoramic radiographs were taken for each patient using a panoramic apparatus to determine vertical mandibular height asymmetry indices by a method developed by Habets et al.

Mann-Whitney U test, Kruskal-Wallis test and Pearson Chi-Square test were used to determine the possible statistically significant differences between groups set at (P ≤ 0.05).Results : The results showed there are significant differences between the vertical mandibular height asymmetry indices of the bruxers and non-bruxers subjects.

The female bruxer subjects had the higher condylar index value than that of the male but statistically, there is no significant difference, while the severity of tooth wear had a signifi-cant different affect on the condylar indices.

Conclusions : The results showed that the vertical man-dibular asymmetry indices were affected by the tooth wear associated with bruxer subjects.

The bruxer subjects had the higher value than the non-buxer subjects and there is no significant difference of the condylar index of bruxer subjects among different genders.

While, condylar index value increased significantly as the tooth wear severity grade increased.