Segment tilting associated with surgically assisted rapid maxillary expansion

被引:7
作者
Daif, E. T. [1 ]
机构
[1] Cairo Univ, Dept Oral & Maxillofacial Surg, Fac Oral & Dent Med, Cairo, Egypt
关键词
maxillary deficiency; SARME; segmental tilting; PALATAL EXPANSION; COMPUTED-TOMOGRAPHY; DISTRACTION; STABILITY; DENTOALVEOLAR; DISJUNCTION; SKELETAL; SUTURE; SARME;
D O I
10.1016/j.ijom.2013.06.019
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
This study aimed to evaluate, via computed tomography, the direction and magnitude of the segmental tilting that may occur after surgically assisted rapid maxillary expansion (SARME) in patients with a transverse maxillary deficiency. Thirty adult patients with a transverse maxillary deficiency greater than 5 mm were treated by SARME. The procedures consisted of bilateral zygomatic buttress and midpalatal osteotomies combined with the use of a tooth-borne orthopaedic device postoperatively. Axial and coronal images were obtained before and 6 months after SARME to evaluate the segment tilting. The greatest expansion occurred in the most inferior (5.4 +/- 1.1 mm) and anterior (4.0 +/- 1.3 mm) regions of the maxilla. The expanded segment tilted outward inferiorly and anteriorly in coronal and axial images, respectively. The segment tilting was 2.0 mm (2.3%) inferiorly and 3.1 mm (12.8%) anteriorly. It can be concluded that an outward tilting occurs in the most inferior and anterior portions of the maxilla during SARME procedures. Hence the direction and magnitude of such segmental tilting must be considered preoperatively when determining the surgical objectives.
引用
收藏
页码:311 / 315
页数:5
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