Surgically Assisted Maxillary Expansion Imparts Three-Dimensional Nasal Change

被引:29
作者
Metzler, Philipp [1 ]
Geiger, Erik J. [1 ]
Chang, Christopher C. [1 ]
Steinbacher, Derek M. [2 ]
机构
[1] Yale Univ, Sch Med, Dept Plast & Reconstruct Surg, New Haven, CT 06520 USA
[2] Yale Univ, Sch Med, Dept Plast & Reconstruct Surg, Craniofacial Program, New Haven, CT 06520 USA
关键词
BEAM COMPUTERIZED-TOMOGRAPHY; CEPHALOMETRIC ANALYSIS; ORTHODONTIC TREATMENT; ORTHOGNATHIC SURGERY; LANDMARKS; FACE;
D O I
10.1016/j.joms.2014.03.004
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Purpose: The impact of surgically assisted maxillary expansion (SAME) on facial soft tissue structures has not been adequately studied using 3-dimensional (3D) objective analysis. The purpose of this study was to analyze nasolabial soft tissue after SAME using 3D photographic technology. Materials and Methods: This was a retrospective cohort study of patients undergoing SAME in which pre-and postexpansion 3D photographs (3D VECTRA Photosystem, Canfield, Fairfield, NJ) were analyzed. Nasolabial anthropometric measurements were performed using the 3D postprocessing software (Mirror). A follow-up period of at least 6 months was required for final evaluation. Two observers verified the landmarks on each dataset before measuring. Statistical analysis involved the paired t test, the Simes correction for multiple comparisons, and repeated measures analysis of covariance (ANCOVA) to control for age, gender, and the time lag between pre-and postoperative assessments. Results: Twelve patients (24 photogrammetric datasets) were included. The male-to-female ratio was 0.5 (mean age, 17.3 yr). Nasal changes after SAME showed significant increases (P <.05) in alar width (from 33.1 to 34.5 mm), sill width (from 9.2 to 9.7 mm), and columella projection (from 94.1 to 95.1 mm) after the Simes correction. ANCOVA showed a significant increase in alar base width. Distinct changes in nostril shape and dimension were found, but lacked statistical significance. Conclusion: Three-dimensional analysis shows widening of the alar width and alar base width after SAME. The magnitude of nasal change parallels that of expansion at the piriform aperture. (C) 2014 Published by Elsevier Inc on behalf of the American Association of Oral and Maxillofacial Surgeons
引用
收藏
页码:2005 / 2014
页数:10
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