대한치과교정학회지 (The korean journal of orthodontics)

  • 제48권2호
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  • Pages.98-106
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  • 2018
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  • 2234-7518(pISSN)
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  • 2005-372X(eISSN)
대한치과교정학회 (The Korean Association Of Orthodontists)
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Adjunctive buccal and palatal corticotomy for adult maxillary expansion in an animal model

  • Le, My Huy Thuc (Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya) ;
  • Lau, Seng Fong (Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia) ;
  • Ibrahim, Norliza (Department of Diagnostic and Intergrated Dental Practice, Faculty of Dentistry, University of Malaya) ;
  • Hayaty, Abu Kasim Noor (Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya) ;
  • Radzi, Zamri Bin (Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya)
  • 투고 : 2017.03.30
  • 심사 : 2017.07.11
  • 발행 : 2018.03.25
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초록

Objective: This study aimed to explore the usefulness of adjunctive buccal and palatal corticotomy for adult maxillary expansion in an animal model using cone-beam computed tomography (CBCT). Methods: Twelve adult sheep were randomly divided into two groups (each n = 6): a control group, where no treatment was administered, and a treatment group, where buccal and palatal corticotomy-assisted maxillary expansion was performed. CBCT scans were taken before (T1) and after (T2) treatment. Differences in all transverse dental and alveolar dimensions, alveolar width at crest level, hard palate level, horizontal bone loss, interdental cusp width and inter-root apex were assessed using Wilcoxon signed-rank and Mann-Whitney U-tests. Kruskal-Wallis tests and pairwise comparisons were used to detect the significance of differences among the inter-premolar and inter-molar widths. Results: CBCT data revealed significant changes in all transverse dental and alveolar dimensions. The mean interpremolar alveolar width showed an increase of 2.29 to 3.62 mm at the hard palate level, 3.89 to 4.38 mm at the alveolar crest level, and 9.17 to 10.42 mm at the buccal cusp level. Dental changes in the vertical dimension were not significant. Conclusions: Our findings based on an adult animal model suggest that adjunctive buccal and palatal corticotomy can allow for both skeletal and dental expansion, with the amount of dental expansion exceeding that of skeletal expansion at alveolar crest and hard palate levels by two and three folds, respectively. Therefore, this treatment modality is potential to enhance the outcomes of maxillary expansion in adults.

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참고문헌

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피인용 문헌

  1. Alveolar restoration following rapid maxillary expansion with and without corticotomy: A microcomputed tomography study in sheep vol.49, pp.4, 2019, https://doi.org/10.4041/kjod.2019.49.4.235