Stability of dental, alveolar, and skeletal changes after miniscrew-assisted rapid palatal expansion
Lim Hyun-Mook, 박영철, 이기준, 김경호, 최윤정,
소속 상세정보
( Lim Hyun-Mook ) - Yonsei University College of Dentistry Department of Orthodontics
박영철 ( Park Young-Chel ) - Yonsei University College of Dentistry Department of Orthodontics
이기준 ( Lee Kee-Joon ) - Yonsei University College of Dentistry Department of Orthodontics
김경호 ( Kim Kyung-Ho ) - Yonsei University College of Dentistry Department of Orthodontics
최윤정 ( Choi Yoon-Jeong ) - Yonsei University College of Dentistry Department of Orthodontics
KMID : 0361920170470050313
Abstract
Objective: Miniscrew-assisted rapid palatal expansion (MARPE) is a means forexpanding the basal bone without surgical intervention in young adults. Here, we assessed the differences in dental, alveolar, and skeletal measurements takenbefore (T0), immediately after (T1), and 1 year after (T2) MARPE.
Methods: Twenty-four patients (mean age, 21.6 years) who had undergone MARPE and cone-beam computed tomography at T0, T1, and T2 were included. Changes in the following parameters were compared using paired t -tests: intercusp, interapex, alveolar, nasal floor, and nasal cavity widths; inclination of the first molar (M1) and its alveolus; and thickness and height of the alveolar bone. A linear mixed-effects model was used to determine variables that affected periodontal changes in the M1.
Results: MARPE produced significant increases in most measurements during T0?T2, despite relapse of some measurements during T1?T2. The alveolar thickness decreased on the buccal side, but increased on the palatal side. The alveolar crest level at the first premolar moved apically. Changes in the thickness and height of the alveolar bone were affected by the corresponding initial values.
Conclusions: MARPE can be used as an effective tool for correcting maxillomandibular transverse discrepancy, showing stable outcomes 1 year after expansion.
키워드
Cone-beam computed tomography; Miniscrew-assisted rapid palatal expansion; Stability; Expansion
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