The Association between Some of Parafunctional Habits with Signs of Temporomandibular Disorders in High School Girls

Yassaei, Soghra and ToodeZaeim, MohammadHosein and Kargar, Jamileh (2008) The Association between Some of Parafunctional Habits with Signs of Temporomandibular Disorders in High School Girls. Journal of Mashhad Dental School, 32 (3). pp. 243-252.

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Abstract

Introduction:Oral habits are patterns of muscle contractions, which are of a complicated nature and inflict unnatural forces on teeth, jaws, muscle and temporomandibular joints. The aim of this study was to determine the association between some of parafunctional habits with signs and symptoms of temporomandibular disorders in high school girls. Materials & Methods: In this study, a group of 630 girls, aged 15-17 years, randomly selected from seven high schools in Yazd, completed a questionnaire and were examined clinically with regard to various signs of tempomandibular disorders. Clinical examination included the followings: 1.Mastication muscle (temporalis and masseter) tenderness on palpation. 2.TMJ tenderness during opening and closing. 3.Clicking of TMJ. 4.Maximum extent of vertical mouth opening. The data were analyzed by ANOVA and Chi-square test. Results: The prevalence of parafunctional habits was 87.9. The highest prevalence of parafunctional habit was hand leaning, following by gum chewing. The mean gum chewing time was 2.02h/day±1.37. The lowest prevalence of parafunctional habit was jaw play. A total of 50.7 of girls had at least one sign of TMD. There was a significant relationship between hand leaning and tenderness of TMJ (P=0.004) and mastication muscle (P=0.025). There was a significant relationship between gum chewing and tenderness of TMJ (P=0.003), clicking (P=0.031) and limited mouth opening (P=0.003). The most prevalent symptom of TMD was TMJ noises. The most prevalent sign of TMD was limitation of vertical mouth opening. Conclusion: In our study, there was a significant correlation between parafunctional habits and TMJ disorders.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 23 Sep 2017 18:23
Last Modified: 23 Sep 2017 18:23
URI: http://eprints.mums.ac.ir/id/eprint/3084

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