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Exploring the Relationship Between Occlusion and Degenerative TMJ Disorders: A Comparative Clinical Study

Exploring the Relationship Between Occlusion and Degenerative TMJ Disorders: A Comparative Clinical Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06948682
Acronym
TMJ
Enrollment
150
Registered
2025-04-29
Start date
2025-01-10
Completion date
2025-04-12
Last updated
2025-05-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Degenerative Joint Disease, TMD

Keywords

TMD, Occlusal therapy, Degenerative joint disease, Pain management, Biomechanical stress

Brief summary

The study Exploring the Relationship Between Occlusion and Degenerative TMJ Disorders: A Comparative Clinical Study investigated the efficacy of occlusal therapy in managing degenerative temporomandibular joint (TMJ) disorders. Conducted over 6 months with 150 patients, it compared three groups: occlusal therapy (Group 1), conventional treatment (Group 2), and routine care (Group 3). Group 1 showed significant improvements, including a 65% pain reduction, 51% better jaw function, slower joint degeneration, 64% less muscle tension, 24% improved jaw mobility, and enhanced quality of life, outperforming the other groups. The findings support occlusal therapy's role in multidisciplinary TMJ management, though long-term studies are needed.

Interventions

DEVICEOcclusal Splint and Bite Correction Therapy

Participants receive individualized occlusal therapy involving occlusal splint use and bite correction (if needed). The treatment is applied continuously over a 6-month period. Monthly follow-up visits are conducted to monitor symptoms, adjust therapy, and evaluate radiographic changes in the TMJ.

OTHERConventional TMJ Therapy

Participants undergo a 6-month conventional management program including pain medication (NSAIDs), physical therapy (jaw exercises, hot/cold therapy), and lifestyle guidance (diet modifications, stress reduction). Monthly clinical evaluations assess functional improvement and symptom reduction.

OTHERRoutine TMJ Care (Medication Only)

Participants receive standard pharmacological management for TMJ disorders (e.g., NSAIDs or analgesics) with no occlusal or physical therapy interventions. Follow-up assessments occur monthly for 6 months to monitor symptom progression and response to minimal intervention.

Sponsors

King Khalid University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

study involves three separate groups of participants receiving different interventions: Group 1: Occlusal treatment Group 2: Conventional therapy Group 3: Standard management (control) Each participant is assigned to one group only and continues in that group throughout the study. This design is characteristic of a parallel assignment, where participants in different groups receive different interventions simultaneously.

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

Adults aged 18 to 65 years Clinical diagnosis of moderate to severe degenerative temporomandibular joint (TMJ) disorder, confirmed by: Radiographic evidence (e.g., cartilage thinning, joint space narrowing) Symptoms such as jaw pain, restricted jaw movement, or muscle tension Ability to provide written informed consent No recent trauma to the TMJ or oral structures

Exclusion criteria

Diagnosed rheumatoid arthritis or other autoimmune joint conditions Serious cardiovascular, neurological, or systemic disorders Pregnant women Patients with contraindications for orthodontic procedures or occlusal splint use History of TMJ surgery Uncontrolled bruxism or other parafunctional habits that require alternative treatment strategies

Design outcomes

Primary

MeasureTime frameDescription
Change in TMJ Pain Intensity (VAS Score)Baseline, 3 months, and 6 monthsAssessment of temporomandibular joint pain using the Visual Analog Scale (VAS), scored from 0 (no pain) to 10 (worst possible pain). This outcome evaluates the effectiveness of occlusal treatment in reducing TMJ-related pain.
Change in Jaw Function (Jaw Function Limitation Scale - JFLS)Baseline, 3 months, and 6 monthsMeasurement of jaw functionality using the JFLS, a patient-reported scale ranging from 0 (no limitation) to 20 (severe limitation). This assesses improvements in jaw movement and function following different interventions.
Radiographic Changes in TMJ StructureBaseline, 3 months, and 6 monthsEvaluation of TMJ degeneration using radiographic imaging (X-ray and MRI), including assessment of joint space narrowing, cartilage thinning, and subchondral bone changes. Quantitative imaging will compare structural changes across groups.

Countries

Saudi Arabia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026