Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지
DOI QR코드

DOI QR Code

Relationship between inter-condylar width and inter-maxillary first molar width

과두간 폭경과 상악 제1대구치간 폭경 사이의 관계

  • Oh, Sang-Chun (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Kong, Hyun-Jun (Department of Prosthodontics, College of Dentistry, Wonkwang University)
  • 오상천 (원광대학교 치과대학 치과보철학교실) ;
  • 공현준 (원광대학교 치과대학 치과보철학교실)
  • Received : 2019.10.07
  • Accepted : 2019.10.29
  • Published : 2019.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Purpose: The aim of this study was to evaluate the correlation between inter-condylar width and inter-maxillary first molar width to present the criteria for prosthetic reconstruction of dental arch width in maxillary and mandibular fully edentulous patients. Materials and Methods: 120 Koreans (60 males and 60 females) who underwent the cone beam computerized tomography (Cone-beam CT) were selected. The Cone-beam CT images were analysed using Invivo 5.1. After reorientation of axis, inter-maxillary first molar width was measured by clicking both mesio-buccal cusp tip of maxillary first molar. And inter-condylar width was measured by clicking both middle points of condyles. The collected data were analysed with SPSS Version 20.0 and statistical significance of the correlation between inter-condylar width and inter-maxillary first molar width was verified by Pearson's correlation analysis. Results: The mean inter-condylar width of Korean was 105.9 mm, and that of male (108.3 mm) was statistically significantly wider than the female (103.4 mm). The inter-maxillary first molar width of Korean was 57.1 mm, and that of male (57.9 mm) was statistically significantly wider than the female (56.2 mm). Pearson's correlation analysis between inter-condylar width and inter-maxillary first molar width showed a Pearson correlation coefficient of 0.614 and statistically significantly positive correlation. Conclusion: Intercondylar width and inter-maxillary first molar width showed positive correlation and the average ratio of inter-condylar with and inter-maxillary first molar width was 1:0.54. Based on the results of this limited study, inter-condylar width can be used as a guide for setting up dental arch width in fully edentulous patient.

목적: 본 연구의 목적은 상악과 하악의 완전 무치악 환자에서 보철물로 상실된 치열궁 폭경 재건을 위한 기준을 제시하기 위하여 과두간 폭경에 대한 상악 제1대구치간 폭경의 상관관계를 평가하기 위함이다. 연구 재료 및 방법: 콘빔형 전산화단층영상(Cone-beam CT)을 촬영한 환자 중, 본 연구의 기준에 부합하는 한국인 120명(남성 60명, 여성 60명)을 선택하였으며 Invivo 5.1을 이용해 Cone-beam CT scan을 분석하였다. 축의 방향설정 후, 상악 제1대구치의 근심 협측 교두정간 거리를 측정하였으며, 과두간 폭경은 각 과두의 중심점을 지정하여 측정하였다. 수집된 자료는 SPSS Version 20.0으로 분석하였고, Pearson의 상관분석을 이용하여 과두간 폭경과 상악 제1대구치간 폭경의 상관관계의 통계적 유의성을 검증하였다. 결과: 한국인의 평균 과두간 폭경은 105.9 mm였으며, 남성이 108.3 mm 여성이 103.4 mm였다. 평균 상악 제1대구치간 폭경은 57.1 mm였으며, 남성이 57.9 mm 여성이 56.2 mm였다. 과두간 폭경과 상악 제1대구치간 폭경에 대한 Pearson의 상관분석 결과, 0.614의 Pearson 상관계수로 통계적으로 유의한 양의 상관관계를 보였다. 결론: 과두간 폭경과 상악 제1대구치간 폭경은 양의 상관관계를 보였으며, 한국인의 과두간 폭경과 상악 제1대구치간폭경의 평균 비율은 1:0.54를 보였다. 본 제한된 연구의 결과를 근거로 상악과 하악의 완전 무치악 환자에서 과두간 폭경을 본래의 상악 치열궁 폭경 설정을 위한 가이드로서 사용이 가능할 것이다.

Keywords

References

  1. Watt DM, McGregor AR. Designing complete denture. 2nd ed. Philadelphia; WB Saunders Co.; 1986. p.22-8.
  2. Pound E. Recapturing esthetic tooth position in the edentulous patient. J Am Dent Assoc 1957;55:181-91. https://doi.org/10.14219/jada.archive.1957.0171
  3. Lang BR. Complete denture occlusion. Dent Clin North Am 2004;48:641-65. https://doi.org/10.1016/j.cden.2004.03.006
  4. Debnath N, Gupta R, Meenakshi A, Kumar S, Hota S, Rawat P. Relationship of inter-condylar distance with inter-dental distance of maxillary arch and occlusal vertical dimension: a clinical anthropometric study. J Clin Diagn Res 2014;8:ZC39-43.
  5. Lee KY, Lee DJ. A comparative study of teeth and dental arch of Korean and Caucasian. Oral Biol Res 1993;71:1-15.
  6. Song WC, Yun KH, Koh KS. Facial flatness of Korean: using facial depth. Korean J Anat 2003;36:499-506.
  7. Kook YA, Nojima K, Moon HB, McLaughlin RP, Sinclair PM. Comparison of arch forms between Korean and north American white populations. Am J Orthod Dentofacial Orthop 2004;126:680-6. https://doi.org/10.1016/j.ajodo.2003.10.038
  8. Hwang HS, Kim WS, McNamara JA Jr. Ethnic differences in the soft tissue profile of Korean and European-American adults with normal occlusions and well-balanced faces. Angle Orthod 2002;72:72-80.
  9. Ferrario VF, Sforza C, Miani A Jr, Colombo A, Tartaglia G. Mathematical definition of the curve of Spee in permanent healthy dentitions in man. Arch Oral Biol 1992;37:691-4. https://doi.org/10.1016/0003-9969(92)90073-H
  10. Ferrario VF, Sforza C, Miani A Jr, Tartaglia G. Mathematical definition of the shape of dental arches in human permanent healthy dentitions. Eur J Orthod 1994;16:287-94. https://doi.org/10.1093/ejo/16.4.287
  11. Bayome M, Park JH, Kook YA. New three-dimensional cephalometric analyses among adults with a skeletal Class I pattern and normal occlusion. Korean J Orthod 2013;43:62-73. https://doi.org/10.4041/kjod.2013.43.2.62
  12. Alam MK, Shahid F, Purmal K, Ahmad B, Khamis MF. Tooth size and dental arch dimension measurement through cone beam computed tomography: Effect of age and gender. Res J Recent Sci 2014;3:85-94.
  13. Naji P, Alsufyani NA, Lagravere MO. Reliability of anatomic structures as landmarks in three-dimensional cephalometric analysis using CBCT. Angle Orthod 2014;84:762-72. https://doi.org/10.2319/090413-652.1
  14. Boucher CO. Swenson's complete dentures. 5th ed. St. Louis; Mosby Company; 1964. p. 246-51.
  15. Lunquist DO, Luther WW. Occlusal plane determination. J Prosthet Dent 1970;23:489-98. https://doi.org/10.1016/0022-3913(70)90198-8
  16. Boucher CO. Current clinical dental terminology. 2nd ed. St. Louis; Mosby Company; 1974. p. 229.
  17. Lee SH. Fixed prosthodontics. 2nd ed. Seoul; Jeeseung Publisuing co.; 2007. p. 102.
  18. Keshvad A, Winstanley RB, Hooshmand T. Intercondylar width as a guide to setting up complete denture teeth. J Oral Rehabil 2000;27:217-26. https://doi.org/10.1046/j.1365-2842.2000.00509.x
  19. Taylor R. Interpretation of the correlation coefficient: A basic review. JDMS. 1990;6:35-9.