The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Relationship between intraarch space discrepancy and craniofacial morphology

치열 공간 부조화와 두개안면골격 형태의 상관성

  • Kim, Yo-Sook (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Jung, Ae-Jin (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kang, Kyung-Wha (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Sang-Cheol (Department of Orthodontics, School of Dentistry, Wonkwang University)
  • 김요숙 (원광대학교 치과대학 교정학교실) ;
  • 정애진 (원광대학교 치과대학 교정학교실) ;
  • 강경화 (원광대학교 치의학연구소 치과대학 교정학교실) ;
  • 김상철 (원광대학교 치의학연구소 치과대학 교정학교실)
  • Published : 2003.08.01
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Abstract

The Purpose of this study was to Investigate the relationship between the space discrepancy of the mandibular dentition and craiofacial morphology in adults with good Angle class I occlusion. Dental casts of normal group, crowded group and spaced group were selected on the basis of dental crowding and spacing. Subjects with excessive space to accomodate the lower teeth were classified as spaced group(39). Subjects with a space discrepancy of more than 4mm were classified as crowded group(45). Normal subjects had little or no dental crowding and spacing(40). Various skeletodental measurements in lateral cephalograms were evaluated and compared by ANOVA, Pearson correlation analysis and multiple stepwise regression analysis. The results were as follows; 1. ANB angle was larger in crowded group than in spaced group. 2. Maxilla and mandible in crowded group were inclined more downward and forward than in spaced group, so crowded group was found to have vortical tendency. 3. Anterior cranial base length and mandibular body length were longer in spaced group than in crowded group. 4. According to the multiple stepwise regression analysis with space discrepancy as dependent variable, 40% of variance of space discrepancy could be explained by ANB angle, anterior facial height and ramus height. Multiple regression equation was as follows Space discrepancy=46.51-2.51ANB-0.58AFH+0.65RH

치열 공간 부조화에 영향을 미치는 골격 및 치성요소를 알아보기 위하여 하악 치열궁내 총생을 보이는 성인 45명과 공극을 보이는 성인 39명의 I급 부정교합 환자와 정상적인 배열을 갖는 성인 40명을 선정하여 측모 두부방사선사진과 모형을 분석하여 다음과 같은 결론을 얻었다. 1. 공극군보다 총생군 ANB각이 컸다 2. 공극군보다 총생군이 하악골 및 상악골의 전하방 경사가 커서 안모의 수직적 양상이 심했다. 3. 총생군보다 공극군이 전두개저와 하악체 길이가 컸다. 4. ANB 각, 전안면 고경과 하악지 길이가 공간 부조화 양의 예측에 기여하며, 다음과 같은 회귀방정식이 산출되었다. space discrepancy=46.51-2.51ANB-0.58AFH+0.65RH $(R^2=0.40)$

Keywords

References

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