Treatment Effects of Maxillary Molar Distalization with Palatal Plate: CBCT Synthesized Cephalometric Analysis
김혜진, Bayome Mohamed, Trang Vu Thi Thu, Park Justyn, 국윤아,
소속 상세정보
김혜진 ( Kim Hye-Jin ) - Catholic University College of Medicine Department of Orthopedics
( Bayome Mohamed ) - Catholic University College of Medicine Department of Orthodontics
( Trang Vu Thi Thu ) - Catholic University College of Medicine Department of Orthodontics
( Park Justyn ) - University of California in Los Angeles Department of Biology
국윤아 ( Kook Yoon-Ah ) - Catholic University Seoul St. Mary’s Hospital Department of Orthodontics
KMID : 1146620140030010001
Abstract
The purpose of this study was to evaluate the clinical treatment effects of molar distalization with palatal plate using 2 dimensional (2D) cephalograms converted from CBCT. This retrospective clinical study included 20 consecutively treated patients (11 male, 9 female), with an average age of 15±3 years. Cephalometric analysis was made on 2D cephalogram images derived from 3D CBCT. Skeletal, dental, and soft tissue measurements were evaluated. Through the use of palatal plate, clinically successful distalization of maxillary molars was achieved. Statistically significant changes in molars positions were observed between T1 and T2 (before and after the distal movement). The first molar and second premolar distalization were 3.98±1.23 mm and 1.17±3.54 mm with distal tipping of 3.17±4.97°and 3.21±2.86°, respectively. Moreover, the incisors were retracted 3.12±3.24 mm, with 10.31±4.98°of tipping and 1.75±1.54 mm of extrusion. All skeletal changes during treatment were not significant. The upper and lower lips were retracted 1.57 and 1.49 mm respectively. The palatal plate could be a valid clinical option for efficient distalization of the maxillary first molars in Class II patients.
키워드
Molar distalization; Class II malocclusion; Cone beam CT; Palatal plate
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