Effect of High-intensity Laser Therapy on Temporalis and Masseter Muscles Activity in Patients With Myogenic Temporomandibular Joint Dysfunction
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 40
- 主要终点
- Pain intensity
研究概览
简要总结
This study will be conducted to investigate the effect of high-intensity laser therapy on the temporalis and masseter muscles activity in patients with myogenic temporomandibular joint dysfunction.
详细描述
Temporomandibular joint dysfunction (TMD) is one of the problems that affect the quality of lifestyle through the presence of pain around the joint radiated in the face, neck, or shoulders muscles and a decrease in function of the temporomandibular joint that leads to difficulty in mastication, swallowing, earaches, dizziness, and hearing problems may sometimes be associated with TMD.
High-intensity laser therapy (HILT) is a laser with a wavelength of 1064 nm and has recently been used in the treatment of musculoskeletal diseases. Its primary effect is the analgesic effect and reactive vasodilation by affecting the cutaneous nerve endings. Another mechanism of action is based on tissue stimulation. This stimulation occurs at the level of cells, vascular tissue, interstitial tissue, and the immune system. It increases regeneration and beta-endorphin release by inducing protein synthesis in synovial fluid, thus exerting analgesic and anti-inflammatory effects.
Since there is a lack of literature studying the effect of HILT on masseter and temporalis muscles activity in patients with myogenic TMD so, this study may provide a baseline for a new technique in rehabilitation intervention in patients with myogenic TMD.
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
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 20 Years 至 45 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients from both gender with unilateral myogenic temporomandibular dysfunction (TMD) with trismus diagnosed and referred from maxillofacial specialist.
- •Aged between 20 to 45 years old .
- •Visual analogue scale (VAS) score >3 for unilateral myogenic pain of the temporomandibular joint (TMJ).
- •Pain lasting at least 3 months.
- •Patients were diagnosed as unilateral myogenic pain.
排除标准
- •Previous TMJ surgery.
- •History of jaw dislocation.
- •History of jaw fracture.
- •Previous therapy with occlusal splint.
- •Concomitant therapy of bruxism.
- •Presence of removable oral prosthesis.
- •Metal implants in the skull.
- •Presence of hearing aids.
- •Malignancy.
- •Pregnancy.
- •Diabetic patients.
- •Hypertensive patients.
- •Systemic rheumatologic disease
- •Systemic infection.
- •Inserted cardiac pacemaker.
- •Presence of coagulation disorders.
- •Trigeminal neuritis.
- •Cognitive dysfunction.
- •Bilateral TMD.
结局指标
主要结局
Pain intensity
时间窗: within 8 weeks
Visual analogue scale (VAS), a valid and reliable measure of pain intensity will be used to measure pain intensity for all participants in both groups before and after treatment. All participants will be asked to mark their pain level on a 10-cm line that corresponds to their pain intensity on the line between "0", representing "no pain", and "10", representing "the worst pain.
Temporalis and masseter muscles activity
时间窗: within 8 weeks
The surface electromyography device (sEMG) (MyoTrac Infiniti 2 Channel sEMG w/Rehab Suite \& Continence Suite-T9855; Quebec, Canada) at 60 Hz and Infiniti software will be used to record masseter and temporalis activity before and after the treatment program. patients will be instructed to clench to help the researcher to find the appropriate muscle location by their prominence. Pregelled and self-adhesive electrodes with 3 surface leads (2 recording, 1 reference) will be used. The electrode is placed over the anterosuperior to the angle of the mandible on both sides for recording masseter muscle, while for temporalis muscle, electrodes are placed above a line drawn from upper earline to canthus of the eye with interelectrode distance which is 8mm. sEMG Signal Analysis: Mean, median frequency, SD, root mean square, minimum, maximum, and range of muscle activity (μV) will be calculated.
Range of mouth opening
时间窗: within 8 weeks
Flexible millimeter ruler will be used to measure mouth opening for all participants in both groups before and after the treatment. Mouth opening will be evaluated by asking the patient to open their mouth as wide as possible and measuring the distance between the edges of the frontal incisors with a ruler at the incisal edge of the maxillary central incisor that is the most vertically oriented and measured vertically to the labio-incisal edge of the opposing mandibular incisor to assess the pre-post therapy maximum mouth opening (MMO). Studies reported range has been as wide as 32-62 mm (for both sexes)
次要结局
- Limitation of Daily Function Temporomandibular Dysfunction questionnaire (LDF-TMDQ)(within 8 weeks)
研究者
Mohaya Ahmed Mohamed
Principal investigator
Cairo University