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Skeletal and dentoalveolar changes after miniscrew-assisted rapid palatal expansion in young adults: A cone-beam computed tomography study

 Jung Jin Park  ;  Young-Chel Park  ;  Kee-Joon Lee  ;  Jung-Yul Cha  ;  Ji Hyun Tahk  ;  Yoon Jeong Choi 
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.47(2) : 77-86, 2017 
Journal Title
 Korean Journal of Orthodontics  (대한치과교정학회지) 
Issue Date
Adults ; Cone-beam computed tomography ; Expansion ; Miniscrew-assisted rapid palatal expansion
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 1.1°-2.9°. CONCLUSIONS: Our results indicate that MARPE is an effective method for the correction of maxillary transverse deficiency without surgery in young adults.
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2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
박영철(Park, Young Chel)
이기준(Lee, Kee Joon) ORCID logo https://orcid.org/0000-0002-0782-3128
차정열(Cha, Jung Yul)
최윤정(Choi, Yoon Jeong) ORCID logo https://orcid.org/0000-0003-0781-8836
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