Skeletal and dentoalveolar changes after miniscrew-assisted rapid palatal expansion in young adults: A cone-beam computed tomography study
박정진, 박영철, 이기준, 차정열, Tahk Ji-Hyun, 최윤정,
소속 상세정보
박정진 ( Park Jung-Jin ) - 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
차정열 ( Cha Jung-Yul ) - Yonsei University College of Dentistry Department of Orthodontics
( Tahk Ji-Hyun ) - Harvard University Graduate of Harvard School of Dental Medicine
최윤정 ( Choi Yoon-Jeong ) - Yonsei University College of Dentistry Department of Orthodontics
KMID : 0361920170470020077
Abstract
Objective: The aim of this study was to evaluate the skeletal and dentoalveolar changes after miniscrew-assisted rapid palatal expansion (MARPE) in young adults by cone-beam computed tomography (CBCT).
Methods: This retrospective study included 14 patients (mean age, 20.1 years; range, 16?26 years) with maxillary transverse deficiency treated with MARPE. Skeletal and dentoalveolar changes were evaluated using CBCT images acquired before and after expansion. Statistical analyses were performed using paired t-test or Wilcoxon signed-rank test according to normality of the data.
Results: The midpalatal suture was separated, and the maxilla exhibited statistically significant lateral movement (p < 0.05) after MARPE. Some of the landmarks had shifted forwards or upwards by a clinically irrelevant distance of less than 1 mm. The amount of expansion decreased in the superior direction, with values of 5.5, 3.2, 2.0, and 0.8 mm at the crown, cementoenamel junction, maxillary basal bone, and zygomatic arch levels, respectively (p < 0.05). The buccal bone thickness and height of the alveolar crest had decreased by 0.6?1.1 mm and 1.7?2.2 mm, respectively, with the premolars and molars exhibiting buccal tipping of 1.1o?2.9o.
Conclusions: Our results indicate that MARPE is an effective method for the correction of maxillary transverse deficiency without surgery in young adults.
키워드
Cone-beam computed tomography; Miniscrew-assisted rapid palatal expansion; Adults; Expansion
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