Center for TMD and Orofacial Pain, Peking University, Beijing, China.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2012 Aug;114(2):259-65. doi: 10.1016/j.oooo.2012.03.004.
The aim of this study was to evaluate osseous changes accompanying anterior repositioning splint (ARS) therapy in patients with temporomandibular joint disk displacement.
Cone-beam computerized tomography (CBCT) data of 36 patients with intermittent or permanent closed-lock were used; 23 patients with permanent closed-lock had their displaced disks physically reduced by mandibular manipulation before ARS therapy. CBCT was performed before and ≈ 6 months after ARS therapy. The presence and location of "double contour" images suggesting condylar bone remodeling were statistically analyzed.
The "double contour" images after ARS therapy were observed in ≈ 80% of patients, more frequently in joints with signs of displaced disks. The "double contour" appeared more often on the posterior bevel as well as the medial and middle part of condyles (P < .01).
ARS therapy can facilitate regenerative remodeling of condyles. CBCT is a useful tool for monitoring osseous changes in condyles.
本研究旨在评估颞下颌关节盘移位患者接受前移位夹板（ARS）治疗后的骨变化。
使用了 36 例间歇性或永久性闭锁患者的锥形束计算机断层扫描（CBCT）数据；23 例永久性闭锁患者在接受 ARS 治疗前通过下颌手法使移位的关节盘复位。在 ARS 治疗前和 ≈6 个月后进行 CBCT 检查。统计分析了提示髁突骨重塑的“双轮廓”图像的存在和位置。
ARS 治疗后约 80%的患者出现“双轮廓”图像，在有移位关节盘迹象的关节中更为常见。“双轮廓”更常出现在后斜面以及髁突的内侧和中部（P<.01）。
ARS 治疗可促进髁突的再生重塑。CBCT 是监测髁突骨变化的有用工具。
