Phase 1 Study of Role of Botox in Myofascial Temporomandibular Disorder
试验速览
- 阶段
- 1 期
- 状态
- 撤回
- 试验地点
- 1
- 主要终点
- 50% reduction in pain
研究概览
简要总结
Hypothesis: Myofascial temporomandibular joint disorder and related symptoms are associated with mandibular condyle and temporal fossa overloading secondary to temporalis and masseter muscle hyperactivity and spasm
This study will examine the use of onabotulinumtoxinA (Botox) to treat myofascial pain disorder in patients with bruxism who frequently exhibit signs of temporomandibular joint disorder (TMD) in a double blind cross-over randomized clinical trial by injecting 50 units Botox in temporalis and masseter muscles in 32 patients with 6 months follow up.
The objective of the proposed study will be to establish the safety and efficacy of botox in treating TMD associated with bruxism. By the time patients reach the specialists office, most have failed maximal conservative therapies, including non-chew diet, night guard, oral analgesics, muscle relaxants, physical therapy, and a portion have even undergone more invasive procedures, such as manipulation under anesthesia, arthroscopy, and arthroplasty surgeries with limited improvement or recurrence. Primary outcome of the study will be 50% reduction in pain. Secondary outcomes will be 50% reduction in surgical therapy, 25% increase in maximal inter-incisal opening (MIO). The investigators look forward to working with you on the proposed study
详细描述
The study will enroll 32 patients with myofascial TMD. Patient will be aged 18-65. Exclusion criteria will include neuromuscular diseases, prior botox injections within previous 12 months, pregnancy, and fibromyalgia. All patients will be selected from the outpatient clinic, complaining of TMJ disease associated with bruxism. Screening will include a thorough history and exam, and TMJ CT scan or MRI. Patients with neuromuscular disorders, musculoskeletal disorders, and prior Botox injections will be excluded. Patients who have not already undergone conservative treatment will be managed with 3 months conservative therapies prior to becoming eligible. All patients will be informed and consented for participation in the study and Botox injections. Baseline pain questionnaire, physical exam will be performed. Patients will be randomized to receive normal saline or botox injections. All patients will crossover for the second set of injections at 3 months. All patients will receive up to a total of 200 Botox units at either 0 or 3 month time points. In this regard, patients will act as their own placebo control. Botox will be prepared according to the manufacturer's instructions. Briefly, the lyophilized protein will be reconstituted with preservative-free normal saline and drawn into 1-mL syringe. While the patient is sitting in the office procedure chair, 25 to 50 U of Botox will be injected into each temporalis muscle and 25 to 50 U of Botox will be injected into the each masseter muscle. The patient will be instructed to keep head elevated for 8 hours. Patients will be called 3 times after the first round of injections, to monitor for adverse events. Patients will be seen in clinic at 3 months and asked to fill out a second pain questionnaire. They will also undergo second physical exam, and then receive a second set of injections (crossover). Patients will be seen in clinic at 6 months and asked to fill out a third pain questionnaire undergo third physical exam. Patients will be called 3 times after the second round of injections, to monitor for adverse events. Patients will be seen in clinic at 6 months and asked to fill out a third pain questionnaire undergo a third physical exam
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Double (Participant, Care Provider)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •aged 18-65 persons with a diagnosis of myofascial temporomandibular joint disorder refractory to conservative treatment for 6 months
排除标准
- •pregnancy
- •rheumatoid arthritis
- •ankylosing spondylitis
- •psoriatic arthritis
- •fibromyalgia
- •neuropathic pain
- •pain of dental origin
- •muscle relaxant use
- •aminoglycoside use
- •prior Botox use
- •neuropathic pain
- •trigeminal neuralgia
研究组 & 干预措施
Botox injection first, followed by placebo
50 units Botox injection in masseter and temporalis muscles in the first 3 months, then second injection of normal saline at placebo in second 3 months
干预措施: onabotulinumtoxinA (Drug)
Placebo injection first, followed Botox
Injection of normal saline at placebo in first 3 months, then 50 units Botox injection in masseter and temporalis muscles in the second 3 months.
干预措施: onabotulinumtoxinA (Drug)
结局指标
主要结局
50% reduction in pain
时间窗: 6 months
Patients will be seen in clinic every 3 months and asked to fill out questionaire. Questionaire will include with visual analogue scale (VAS) average pain over previous week, month
次要结局
- 25% increase in maximal opening at incisors(6 months)
研究者
Ethan Baughman
Plastic surgery resident physician
Washington University School of Medicine