Correlation Between Occlussion Types , in Patients With Temporomandibular Disorders.

Study Overview
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Brief Summary
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study to find if there is correlation between occlusion types and TMD or not

Detailed Description
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The relationship among occlusion, condylar position and temporomandibular disorders (TMDs) has been part of an extensive discussion in the dental field. There is a strong belief that the discrepancy between the centric relation (CR) and the intercuspal position (ICP) could predispose to the presence of TMDs . It was suggested in the past in the earlier studies that TMD is more common among the individuals who have Angle class II and class III , malocclusion , open bite , and cross bite . In the 1990s, studies suggested that some occlusal and skeletal characteristics as anterior open bite, unilateral posterior crossbite, overjet greater than 6-7mm, absence of five or more posterior teeth and CR to maximum intercuspation (MI) discrepancy greater than 2mm could be considered occlusal risk factors for TMDs . In their study, Oyetola et al. reported that 25% of the evaluated TMD patients had malocclusion Yet, recently with studies and systematic reviews , this idea ( alocclusion is the main cause of TMD) started to lose its support, and many studies showed that sensitivity to nociceptive stimulations and psychological factors are of more importance in the etiology of TMD

Official Title
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Correlation Between Occlussion Types , in Patients With Temporomandibular Disorders. : A Cross Sectional Study

Conditions
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Temporomandibular Disorder

Intervention / Treatment
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* Radiation: lateral cephalometry


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients above 16 years old and below 50 Patients with TMD diagnosed (stage 2 Wilkes classification , anterior disc displacement with reduction, ) Provided informed consent. No history of systemic condition affecting TMJ No previous orthodontic ttt Exclusion Criteria: Ear diseases. History of facial trauma. Neurological or oncological disease.

Ages Eligible for Study
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Minimum Age: 16 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Radiation: lateral cephalometry|lateral x-ray beam to capture lateral cephalometry of patients|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prevalence of ADDwR in patients with class III malocclusion | lateral cephalometry will be taken for patients with TMDs and then measurements will be done to calculate SNA and SNB to see Prevalence of ADDwR in patients with class III malocclusion | baseline | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prevalence of ADDwR in patients with class I and class II malocclusion | lateral cephalometry will be taken for patients with TMDs and then measurements will be done to calculate SNA and SNB to see Prevalence of ADDwR in patients with class I and class II malocclusion | baseline |