Correlation Between Types of Lateral Pterygoid Muscle Attachment and Internal Derangement of the Temporomandibular Joint (LPM & TMJ)

Correlation Between Types of Lateral Pterygoid Muscle Attachment, Type of Disk Displacement and Osteoarthritic Changes of the Temporomandibular Joint

the study aimed to evaluate the clinical and MRI finding of TMJ AND LPM with predication of the risk factors. Study design: this retrospective study included 1365 joints in 800 patients diagnosed as TMJ internal derangement and all the patients examined by MRI from 2008 to 2019. Cases with loss of continuity of articular disk or the posterior attachment of the disk were considered as positive cases.

Study Overview

• Status: Completed
• Conditions: TMJ Disorder
• Intervention / Treatment: Diagnostic test: MRI

Detailed Description

the study aimed to evaluate the clinical and MRI finding of TMJ with LPM with predication of the risk factors. Study design: this retrospective study included patients diagnosed as TMJ internal derangement and all the patients examined by MRI from 2008 to 2019. Cases with loss of continuity of articular disk or the posterior attachment of the disk were considered as positive cases.

• Study Type: Observational
• Enrollment (Actual): 900

Contacts and Locations

Study Locations

• Egypt
  • Nasr City
    • Cairo, Nasr City, Egypt, 11765
      • Faculty of Dental Medicine Alazhar University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 19 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

The retrospective study included patients seeking treatment for TMD at Al-Azhar University Hospital and the outpatient clinic at the Faculty of Dental Medicine of Al-Azahr University. The sample originally included patients who provided consent to participate in this study and who ultimately underwent treatment for TMJD between 2008 and 2019.

Description

Inclusion Criteria:

- study included patients seeking treatment for TMD at Al-Azhar University Hospital and the outpatient clinic at the Faculty of Dental Medicine of Al-Azahr University.

Exclusion Criteria:

• Exclusion Inclusion criteria: Patients were included if they were older than 18 years and diagnosed with TMJD. criteria for this study included systemic diseases (the presence of polyarthritis or other rheumatic diseases), contraindications for MRI (e.g., implanted metal or medical devices, claustrophobia), the presence of neurologic disorders, head and neck cancer, oral submucous fibrosis, a history of TMJ surgery, a history of previous nonsurgical treatment such as occlusal splints, and a history of joint injection with HA/PRP. Trauma patients with subcondylar fracture and patients with congenital and developmental disorders of the TMJ were also excluded from the study.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Retrospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
control group; NORMAL TMJ	Diagnostic test: MRI; MRI of TMJ
Study group; Patients with TMJ internal derangement	Diagnostic test: MRI; MRI of TMJ

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
VAS	pain index scores were measured using a 10-point visual analogue scale (VAS), with 0 indicating absence of pain and 10 indicating the worst pain.	baseline (pre treatment)
mouth opening	maximum nonassisted (voluntary) mouth opening (MVMO) in millimetres	baseline (pre treatment)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
joint sound	and the joint sound was then determined by combining 3 means: (1) palpation of the TMJ zone by the clinician, (2) the patient's self-reporting regarding whether the joint sound could be heard, and (3) auscultation of the TMJ zone with the stethoscope.	baseline (pre treatment)

Collaborators and Investigators

• Sponsor: Al-Azhar University

Study record dates

Study Major Dates

• Study Start (Actual): November 30, 2019
• Primary Completion (Actual): December 30, 2020
• Study Completion (Actual): January 30, 2021

Study Registration Dates

• First Submitted: June 29, 2021
• First Submitted That Met QC Criteria: July 6, 2021
• First Posted (Actual): July 7, 2021

Study Record Updates

• Last Update Posted (Actual): July 7, 2021
• Last Update Submitted That Met QC Criteria: July 6, 2021
• Last Verified: June 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Joint Diseases; Musculoskeletal Diseases; Muscular Diseases; Stomatognathic Diseases; Jaw Diseases; Craniomandibular Disorders; Mandibular Diseases; Temporomandibular Joint Disorders
• Other Study ID Numbers: AUAREC20190511-11

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No