Damstra Janalt, Mistry Dharmesh, Cruz Claudia, Ren Yijin
Department of Orthodontics, University Medical Centre Groningen, The Netherlands.
Eur J Orthod. 2009 Jun;31(3):327-32. doi: 10.1093/ejo/cjn113. Epub 2009 Mar 31.
The purpose of this study was to investigate the stability of the medial aspects of the rugae in patients where rapid maxillary expansion (RME) was performed in addition to fixed appliance therapy. Nineteen subjects that met the inclusion criteria for each group were randomly selected from the archive of one orthodontist office. The RME/fixed appliances group consisted of 8 males and 11 females (mean age pre-treatment 12.4 +/- 2.0 years). The control group treated with fixed appliances only, consisted of 6 males and 13 females (mean pre-treatment age of 12.5 +/- 2.1 years). The medial aspects of the rugae were recorded on the pre- and post-treatment dental models by means of a standardized photographic set-up. The transverse and antero-posterior positional rugae changes were measured. Kolmogorov-Smirnov normality tests were performed and paired t-tests were used to determine differences between and within the groups. The addition of RME to fixed appliance therapy caused a change in transverse measurements between the medial aspects of the bilateral rugae. There was no change in antero-posterior measurements (APM). The transverse changes were more marked for the third, less for the second rugae, and the least for the first rugae. The medial aspects of the third rugae cannot be considered as stable reference landmarks for dental cast analysis when RME is performed in addition to fixed appliance therapy.
本研究的目的是调查在进行快速上颌扩弓（RME）及固定矫治器治疗的患者中，腭皱襞内侧部分的稳定性。从一位正畸医生诊所的档案中随机选取了19名符合每组纳入标准的受试者。RME/固定矫治器组由8名男性和11名女性组成（治疗前平均年龄12.4±2.0岁）。仅接受固定矫治器治疗的对照组由6名男性和13名女性组成（治疗前平均年龄12.5±2.1岁）。通过标准化摄影设置在治疗前和治疗后的牙齿模型上记录腭皱襞的内侧部分。测量腭皱襞的横向和前后位置变化。进行了柯尔莫哥洛夫-斯米尔诺夫正态性检验，并使用配对t检验来确定组间和组内差异。在固定矫治器治疗中添加RME导致双侧腭皱襞内侧部分之间的横向测量值发生变化。前后测量值（APM）没有变化。第三腭皱襞的横向变化更明显，第二腭皱襞的变化较小，第一腭皱襞的变化最小。当在固定矫治器治疗的基础上进行RME时，第三腭皱襞的内侧部分不能被视为用于牙模分析的稳定参考标志。
