摘要
目的利用电子咬合记录仪（TScan）研究颞下颌关节紊乱病（temporomandibulardisorders，TMD）患者正畸治疗前后，咬合接触的变化，从而评价正畸治疗前后各咬合指标的改善程度及T-scan电子咬合记录仪用于咬合研究的意义。方法经关节门诊确诊为TMD病例13例，男4例，女9例，年龄13~37岁，针对不同患者TMD情况，为每例病人制定个性化矫治方法及目标。治疗前后采用美国Tekscan公司的T-scan咬合记录仪，分别记录[牙合]力中心在前后向与左右向的位移，[牙合]力不对称指数，[牙合]接触点，[牙合]接触面积及咬合时间。记录结果从T-scansoftware4．02存贮并输出。结果TMD患者在正畸治疗后临床症状得到缓解，临床检查无疼痛、开口受限；5例弹响消失，7例有单侧轻度开口初、中期弹响，1例有双侧开口初弹响。主观上8例明显自觉咬合舒适程度明显改善。T-scan检查可见咬[牙合]力中心位移在前后向及左右向位移均减小（P〈0．05），袷[牙合]布分更接近中心（Pdo．05），治疗前后差异有显著统计学意义，治疗前后骀力不对称性有明显改善（P〈0．05）；但咬合接触点及接触面积在治疗前后差异无统计学差异。所有病例咬合时间治疗后较治疗前减小，但结果没有统计学差异。结论TMD患者的[牙合]治疗应针对患者个性处理，[牙合]力分布及咬合中心点可以作为TMD正畸治疗前后的评价指标。
Objective Compare the occlusal change of TMI） patients before and after orthodontic treatment using T-scan, to evaluate the significance of these measurement of occlusal change for TMD patients. Methods 13 TMD patients （4 males and 9 females） are selected and undergoing customized orthodontic treatment. Occlusal evaluation, including occlusai contact point （OCP）, area of contact （AOC）, center of force trajectory（COFT）, balance of occlusion, are recorded before and after orthodontic treatment. Results The clinic symptom of all patients were all relieved. 8 patients felt much better than before. COFT is reduced significantly （P〈0. 05）, and COF is close to the center （P〈0.05）. The balance of occlusion was getting better （P〈0.05）. The oeclusal contact point and area have no significant changes after treatment. Conclusions The COF and balance of occlusion can be used to evaluate the orthodontic treatment.
出处
《中华口腔正畸学杂志》
2009年第2期75-78,共4页
Chinese Journal of Orthodontics
