الفهرس 
Prevalence of the signs and symptoms of tempro-mandibular joint disorder in a sample of Egyptian adolescents according to diagnostic criteria for Tempro-mandibular Disorders (DC/TMD) : A cross sectional study
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Abstract
Aim: To assess the prevalence of temporomandibular disorders (TMD) among a sample of Egyptian adolescents according to Diagnostic Criteria for Tempro-mandibular Disorders DC/TMD symptom questionnaire and clinical examination protocol. Methodology: A total of seven hundred and thirty-three Egyptian adolescents were consecutively recruited from the Diagnostic Center Clinic at the Faculty of Dentistry, Cairo University. (283 men and 450 women) participated in this study from July2020 to June 2021. Their ages ranged from 10 -18 years. The prevalence was determined using symptom questionnaire and clinical examination (Axis I) of The Diagnostic Criteria for Tempro-mandibular Disorders (DC/TMD). Results: Pain was self-reported in 10.1% of the total subjects while the headache was in 8.2% of the sample. Temporalis muscle area was found to be the highest reported pain location at 6% of all subjects. The prevalence of pain related disorders among the study participants was 10.6% of the total sample. The most commonly diagnosed pain related disorder was local myalgia at 7.1% of the total sample in comparison with the headache attributed to TMD which was reported in only 4 subjects. On the other hand, TMJ related disorders were diagnosed in 4.8% of all subjects with the disc displacement with reduction being the most prevalent disorder. TMJ noises was reported in 4.4% of the total sample. Prevalence of TMD diagnoses in females (12.9%) was found to be statistically significantly higher than males (5.7%). No statistically significant difference was found among all age ranges and all incisal relationships in all types of TMDs