Prevalence of the Signs and Symptoms of TMD in Adolescents

Our study is observational cross sectional study to evaluate the prevalence ofTempro-mandibular Joint Disorder( TMDs) in Egyptian adolescents based on Diagnostic Criteria for Tempro-mandibular Disorders(DC/TMD) .The following examinationwill be done for each patient and recorded in his/her chart: Include maximal mandibular opening capacity, joint noises, deviation of mandible during opening and closing, tenderness of the TMJ and masticatory muscles, headache and pain in TMJ area. All clinical examinations will be carried out by one investigator. Examination of TMJ disorders include the following aspects: I) Examination of TMJ sounds (clicking and crepitus) using a stethoscope over the TMJ area and by having the patient open and close the mouth. II) Associated muscle disorders will be determined by: 1. palpation of TMJ area. 2. digital palpation and functional manipulation of the masticatory muscles according to Okeson.