대한치과교정학회지 (The korean journal of orthodontics)

  • 제48권6호
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  • Pages.357-366
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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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Cone-beam computed tomography analysis of transverse dental compensation in patients with skeletal Class III malocclusion and facial asymmetry

  • Lee, Ji-Yea (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Han, Sung-Hoon (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Ryu, Hyeong-Seok (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Lee, Hee-Min (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Sang-Cheol (Department of Orthodontics, School of Dentistry, Wonkwang University)
  • 투고 : 2017.11.10
  • 심사 : 2018.04.04
  • 발행 : 2018.11.01
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초록

Objective: The purpose of this study was to analyze the transverse dental compensation in reference to the maxillary and mandibular basal bones using cone-beam computed tomography (CBCT) and evaluate the correlations between transverse dental compensation and skeletal asymmetry variables in patients with skeletal Class III malocclusion and facial asymmetry. Methods: Thirty patients with skeletal Class I (control group; 15 men, 15 women) and 30 patients with skeletal Class III with menton deviation (asymmetry group; 16 men, 14 women) were included. Skeletal and dental measurements were acquired from reconstructed CBCT images using OnDemand3D 1.0 software. All measurements were compared between groups and between the deviated and nondeviated sides of the asymmetry group. Correlation coefficients for the association between skeletal and dental measurements were calculated. Results: Differences in the ramus inclination (p < 0.001), maxillary canine and first molar inclinations (p < 0.001), and distances from the canine and first molar cusp tips to the midmaxillary or midmandibular planes (p < 0.01) between the right and left sides were significantly greater in the asymmetry group than in the control group. In the asymmetry group, the ramus inclination difference (p < 0.05) and mandibular canting (p < 0.05) were correlated with the amount of menton deviation. In addition, dental measurements were positively correlated with the amount of menton deviation (p < 0.05). Conclusions: Transverse dental compensation was correlated with the maxillary and mandibular asymmetry patterns. These results would be helpful in understanding the pattern of transverse dental compensation and planning surgical procedure for patients with skeletal Class III malocclusion and facial asymmetry.

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