Post-Isometric Relaxation in Temporomandibular Disorders

Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-25
SponsorSanem ŞENER

About this trial

This planned randomized, single-blind clinical trial will investigate the effects of adding the Post-Isometric Relaxation (PIR) technique to a standard postural exercise program in individuals with moderate to severe temporomandibular joint dysfunction (TMD). Forty volunteers aged 18-25 years will be recruited and randomly assigned to either an experimental group (postural exercises + PIR) or a control group (postural exercises only). The intervention will be delivered three times per week for six weeks. Primary outcomes will include cervical range of motion, mandibular mobility, head anterior tilt, and thoracic kyphosis index, measured before and after the intervention. The study aims to determine whether PIR provides additional benefits to standard postural exercises in improving jaw and neck function and postural alignment in young adults with TMD.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Age between 18 and 25 years

Diagnosis of moderate or severe temporomandibular joint dysfunction (TMD) according to the Fonseca Anamnestic Questionnaire

Presence of TMD symptoms for at least 6 months

No TMD treatment received within the last 6 months

Disqualifiers

History of jaw or facial trauma within the past year

History of temporomandibular joint surgery

Presence of systemic rheumatologic, neurological, or musculoskeletal disorders affecting the jaw, neck, or spine

Pregnancy

Trial design

Design model

Parallel

Treatments tested in this trial

  • Postural Exercises + Post-Isometric Relaxation (PIR) Technique

    Behavioral

    Participants will perform a standardized postural exercise program (strengthening, stretching, and mobility exercises for the cervical and thoracic regions) three times per week for six weeks. In addition, the Post-Isometric Relaxation (PIR) technique will be applied to jaw muscles during each session to reduce muscle tension and improve mandibular mobility.

  • Postural Exercises

    Behavioral

    Participants will perform a standardized postural exercise program designed to improve cervical and thoracic mobility and postural alignment. The program will include strengthening, stretching, and mobility exercises targeting the cervical spine, thoracic spine, and related musculature. Each session will last approximately 30-40 minutes and will be conducted three times per week for six weeks under the supervision of a trained therapist.

Treatment groups

40 Participants
are divided into 2 treatment groups
Group A: Experimental Arm: Postural Exercises + Post-Isometric Relaxation (PIR) TechniqueExperimental treatment 2 interventions
Group B: Control Arm: Postural Exercises OnlyActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

Change in mandibular depression (mouth opening)

The distance between the upper and lower central incisors during maximal mouth opening will be measured in millimeters using a caliper.

Time frame
Baseline and after 6 weeks of intervention
2

Change in cervical range of motion

Cervical range of motion will be measured in degrees using a goniometer. Movements assessed will include flexion, extension, right and left lateral flexion, and right and left rotation.

Time frame
Baseline and after 6 weeks of intervention
3

Change in mandibular lateral deviation (right and left)

The horizontal movement of the lower jaw to the right and left will be measured in millimeters using a caliper.

Time frame
Baseline and after 6 weeks of intervention
4

Change in mandibular protrusion

The anterior translation of the mandible will be measured in millimeters using a caliper. Outcome Measure: Change in head anterior tilt - chin-sternum distance

Time frame
Baseline and after 6 weeks of intervention

Secondary outcomes

Other outcomes

Locations

This trial has no locations.

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Sanem ŞENER

Lead sponsor

Bulent Ecevit University

Sponsor institution

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