Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Correlation between Dental and Skeletal Maturity in Korean Children

한국 어린이의 골 성숙도와 치아 석회화 단계 간의 상관관계

  • Kim, Seong Jin (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Song, Je Seon (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Kim, Ik-Hwan (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Kim, Seong-Oh (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Choi, Hyung-Jun (Department of Pediatric Dentistry, College of Dentistry, Yonsei University)
  • 김성진 (연세대학교 치과대학 소아치과학교실) ;
  • 송제선 (연세대학교 치과대학 소아치과학교실) ;
  • 김익환 (연세대학교 치과대학 소아치과학교실) ;
  • 김성오 (연세대학교 치과대학 소아치과학교실) ;
  • 최형준 (연세대학교 치과대학 소아치과학교실)
  • Received : 2021.01.15
  • Accepted : 2021.03.10
  • Published : 2021.08.31
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Abstract

The aim of this study was to investigate the relationships between the stages of calcification of various teeth and skeletal maturity stages among Korean subjects. The samples were derived from hand-wrist, panoramic radiographs, and lateral cephalograms of 743 subjects (359 males and 384 females) with ages ranging from 6 to 14 years. Calcification of seven permanent mandibular teeth on the left side were rated according to the system of Demirjian. To evaluate the stage of skeletal maturation, hand-wrist radiographs were analyzed by skeletal maturity indicators (SMI) system of Fishman and lateral cephalograms by cervical vertebral maturation (CVM) method of Baccetti. Statistically significant relationships were found between dental calcification and skeletal maturity stages according to Spearman rank-order correlation coefficients (r = 0.40-0.84, p < 0.001). The second molar showed the highest correlation and central incisor showed the lowest correlation for female and male subjects. For both sexes, canine stage G and second molar stage F were related to SMI 6 and CS 3. Because of the high correlation coefficients, this study suggests that tooth calcification stages from panoramic radiographs might be clinically useful as a maturity indicator of the pubertal growth period in Korean patients.

이 연구의 목적은 한국 아동의 골 성숙 단계와 여러 치아들의 석회화 단계 간의 상관관계를 알아보고자 하는 것이다. 만 6 - 14세의 남아 359명, 여아 384명의 수완부 방사선사진, 측방두부규격 방사선사진, 파노라마 방사선사진을 분석하여 평가하였다. 하악 좌측의 7개 영구치의 치아 석회화 단계는 Demirjian이 제시한 방법에 의해 평가되었다. 골 성숙도 단계를 평가하기 위하여 수완부 방사선 사진은 Fishman이 제시한 skeletal maturity indicators(SMI)에 따라 평가되었고, 측방두부규격 방사선사진은 Baccetti가 제시한 cervical vertebral maturation(CVM) 방법에 따라 평가되었다. Spearman의 순위상관분석을 시행한 결과 치아 석회화 단계와 골 성숙도 간에 유의미하게 높은 상관관계가 나타났다(r = 0.40-0.84, p < 0.001). 7개의 영구치 중에서 하악 제2대구치가 골 성숙도와 가장 높은 상관관계를 보인 반면 중절치가 가장 낮은 상관관계를 나타내었다. 남녀 모두에서 하악 견치의 stage G와 하악 제2대구치의 stage F가 SMI 6단계와 CS 3단계에서 나타날 확률이 가장 높았다. 이 연구의 결과에 따르면 치아 성숙도와 골 성숙도 사이에 높은 상관관계가 있으므로, 파노라마 방사선사진에서의 치아 성숙도 평가는 성장기 아동의 골 성숙도를 평가하는 보조적 수단으로 활용될 수 있다.

Keywords

Acknowledgement

This study was supported by the research fund from Korean Academy of Pediatric Dentistry (2-2019-0065).

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