Ozzeybek Can Fatma Selen, Turkkahraman Hakan
Department of Orthodontics, School of Dentistry, University of Suleyman Demirel, Isparta, Turkey.
Department of Orthodontics and Oral Facial Genetics, School of Dentistry, Indiana University, Indianapolis.
Eur J Dent. 2019 May;13(2):143-149. doi: 10.1055/s-0039-1694799. Epub 2019 Sep 8.
The aim of this study was to evaluate the effects of rapid maxillary expansion (RME) and facemask therapy on the soft tissue profiles of class III patients at different growth stages.
Forty-five subjects (23 females and 22 males) were divided into prepubertal, pubertal, and postpubertal groups. Bonded type RME appliances and Petit-type facemasks were fitted to each patient, and intraoral elastics were applied from the hooks of the RME appliance to the facemask.
All measurements were statistically analyzed with SPSS version 18.0 (SPSS Inc., Chicago, IL, United States) for Windows. Repeated-measures of ANOVA and posthoc Tukey tests were used to compare the groups.
The soft tissue nasion, pronasale, subnasale, soft tissue A point, and labrale superior landmarks were all displaced forward and downward, and the most dramatic changes were recorded in the pubertal group. The labrale inferior, soft tissue B point, soft tissue pogonion, and soft tissue menton landmarks moved backward and downward in all groups, and the greatest displacements were observed in the pubertal group.
The soft tissue profiles improved significantly and became more convex in all treatment groups. Although, the most favorable facial changes were observed in the pubertal growth stage, the treatments applied in the postpubertal stage also elicited significant changes and should thus be considered viable treatment options.
本研究旨在评估快速上颌扩弓(RME)和面罩治疗对不同生长阶段III类患者软组织侧貌的影响。
45名受试者(23名女性和22名男性)被分为青春期前、青春期和青春期后组。为每位患者佩戴粘结式RME矫治器和Petit型面罩,并从RME矫治器的挂钩到面罩施加口内弹力牵引。
所有测量数据均使用SPSS 18.0版软件(SPSS公司,美国伊利诺伊州芝加哥)进行统计学分析。采用重复测量方差分析和事后Tukey检验对各组进行比较。
软组织鼻根点、鼻前点、鼻下点、软组织A点和上唇缘点均向前下方移位,青春期组的变化最为显著。下唇缘点、软组织B点、软组织颏前点和软组织颏下点在所有组中均向后下方移位,青春期组的移位最大。
所有治疗组的软组织侧貌均有显著改善,且变得更加凸。虽然青春期生长阶段观察到最有利的面部变化,但青春期后阶段应用的治疗也引起了显著变化,因此应被视为可行的治疗选择。