The Effect of Post-Isometric Relaxation Technique on Cervical Range of Motion, Mandibular Mobility, Head Anterior Tilt, and Kyphotic Posture in Individuals With Temporomandibular Joint Dysfunction
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 40
- 主要终点
- Change in mandibular depression (mouth opening)
研究概览
简要总结
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.
详细描述
Temporomandibular joint dysfunction (TMD) is a common musculoskeletal condition characterized by jaw pain, limited mouth opening, and joint sounds, often accompanied by postural deviations such as forward head posture and thoracic kyphosis. Conservative treatments, including postural exercises and manual therapy, are recommended to improve jaw and neck function and reduce symptoms.
The Post-Isometric Relaxation (PIR) technique is a manual therapy method that uses gentle isometric contractions followed by passive stretching to reduce muscle tension and increase mobility. While PIR has been shown to improve masticatory muscle function, its combined use with postural exercises in TMD management has not been fully evaluated.
In this planned study, forty volunteers aged 18-25 years with moderate or severe TMD (diagnosed using the Fonseca Anamnestic Questionnaire) will be recruited. Participants will be randomly assigned into two groups:
Experimental group: Postural exercise program + PIR technique
Control group: Postural exercise program only
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
This is a single-masked trial in which the outcomes assessor is blinded to group allocation. The assessor responsible for measuring cervical range of motion, mandibular mobility, head anterior tilt, and thoracic kyphosis index will not be informed of the participants' assigned intervention group
入排标准
- 年龄范围
- 18 Years 至 25 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •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
- •Presence of chewing muscle pain for at least 6 months
- •Able and willing to participate in the study and follow the exercise program
- •Signed informed consent form
排除标准
- •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
- •Current participation in another clinical trial
- •Inability to perform the exercise program due to medical or physical limitations
- •Refusal to provide informed consent
结局指标
主要结局
Change in mandibular depression (mouth opening)
时间窗: Baseline and after 6 weeks of intervention
The distance between the upper and lower central incisors during maximal mouth opening will be measured in millimeters using a caliper.
Change in cervical range of motion
时间窗: Baseline and after 6 weeks of intervention
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.
Change in mandibular lateral deviation (right and left)
时间窗: Baseline and after 6 weeks of intervention
The horizontal movement of the lower jaw to the right and left will be measured in millimeters using a caliper.
Change in mandibular protrusion
时间窗: Baseline and after 6 weeks of intervention
The anterior translation of the mandible will be measured in millimeters using a caliper. Outcome Measure: Change in head anterior tilt - chin-sternum distance
Change in head anterior tilt - chin-sternum distance
时间窗: Baseline and after 6 weeks of intervention
The vertical distance from the midpoint of the chin to the superior border of the sternum will be measured in centimeters with a measuring tape.
Change in head anterior tilt - occiput-wall distance
时间窗: Baseline and after 6 weeks of intervention
The distance between the occiput and the wall will be measured in centimeters while the participant stands in a natural posture against the wall.
Change in thoracic kyphosis index
时间窗: Baseline and after 6 weeks of intervention
Thoracic kyphosis will be evaluated using a flexicurve ruler to measure curvature from C7 to T12. The thoracic kyphosis index will be calculated as (thoracic width / thoracic length) × 100.
次要结局
未报告次要终点
研究者
Sanem ŞENER
Assistant Professor
Bulent Ecevit University