Harper R P
Department of Surgery, McMaster University Medical Center, Hamilton, Ontario, Canada.
Am J Orthod Dentofacial Orthop. 1990 Jun;97(6):480-8. doi: 10.1016/S0889-5406(05)80028-9.
Condylar path tracings provide quantitative and qualitative data regarding the functional status of the temporomandibular joint. This study was designed to identify the functional status of the TMJ by means of condylar path tracings before treatment and to monitor the response of the TMJ to orthognathic surgery. Baseline data for condylar tracings using a sagittal recording device were established in relation to normal limits for opening, protrusive, and medial excursions of the mandible. In 54 patients 108 joints were studied before and up to 1 year after orthognathic surgery. Internal derangements were identified with condylar tracings before treatment in 72% of all joints studied. Also, condylar tracings identified internal derangements that were not found on clinical examination in 11 of 39 patients. Functional adaptation of the TMJ was found to be more favorable for mandibular reduction and maxillary impaction than for mandibular advancement or combined upper and lower jaw procedures. Condylar path tracings were shown to represent a noninvasive technique to identify and monitor the functional status of the TMJ in response to surgical orthodontics.
髁突轨迹描记术可提供有关颞下颌关节功能状态的定量和定性数据。本研究旨在通过治疗前的髁突轨迹描记术确定颞下颌关节的功能状态，并监测颞下颌关节对正颌外科手术的反应。使用矢状记录装置进行髁突描记的基线数据是根据下颌骨开口、前伸和内侧偏移的正常限度建立的。在54例患者中，对108个关节在正颌外科手术前及术后长达1年的时间内进行了研究。在所有研究的关节中，72%在治疗前通过髁突轨迹描记术发现了内部紊乱。此外，在39例患者中的11例中，髁突轨迹描记术发现了临床检查未发现的内部紊乱。结果发现，颞下颌关节的功能适应性对于下颌后缩和上颌骨截骨术比下颌前突或上下颌联合手术更有利。髁突轨迹描记术是一种无创技术，可用于识别和监测颞下颌关节对正畸外科手术的功能状态反应。
