The relationship of anger expression and its indices and oral lichen plan in patients referred to Tabriz dental faculty

Abstract

Oral lichen planus (OLP) is a common inflammatory disease with unknown etiology. Depression, stress, and anxiety are psychological factors that their influence on the expression of lichen plan by affecting the immune system function is confirmed. There is a probable relation between anger and OLP expression. Therefore, the present study aimed to evaluate the association of anger and oral lichen planus. Materials and methods: In this descriptive study which was done in oral medicine department of dental faculty of Tabriz, 95 people in 3 groups included: A: patient with oral lichen planus, B: positive control, C: negative control were participated. Anger and its indices assessed with STAXI-2 questioaire, and pain was measured via visual analogue scale (VAS). The collected data were analyzed statistically using SPSS 18 software with statistically descriptive methods (frequency-percent and mean standard deviation), the mean difference test for independent groups (ANOVA one-way analysis of variance), Kruskal-Wallis Test for comparing the anger scores and its scales in three groups, Spearman's Rank Correlation Test for assessing the correlation between anger with pain severity of oral lichen planus. Results were analyzed with SPSS 18 software. Following the significant variance analysis, Post Hoc test was utilized. In this study the P<0.05 were presumed statistically significant. Results: With regard to Post-Hoc test findings and mean differences, lichen planus and positive control groups beard higher AX index in comparison with negative control. Comparing AXI among lichen planus and negative control groups revealed the higher grades in lichen planus group. Evaluating the pain severity index (VAS) data and anger indices in lichen planus group, Spearman's Rank Correlation Test revealed the significant correlation between TAngR index and pain severity. Conclusion: The findings of this study indicated that there is a significant correlation between anger control-in and its suppression (gathering tension) and lichen plan development. On the other hand, patient expressed their anger in a non-adaptive and physical manner. The patients with more severe pain in mostly showed reaction anger trait. Based on the findings, we can claim that anger suppression and its control-in may play a role in development of lichen planus disease as one of the known psychosomatic disorders.