The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Evaluation of root and root canal morphology of elderly Korean patients maxillary molars using cone-beam computed tomography

CBCT를 이용한 한국인 고령환자의 상악 대구치에서 치근 및 근관형태의 분석

  • Lee, Tae-Yong (Department of Conservative Dentistry, VHS Medical Center Dental Hospital) ;
  • Kim, Mi-Yeon (Department of Conservative Dentistry, VHS Medical Center Dental Hospital) ;
  • Kim, Sun-Ho (Department of Conservative Dentistry, VHS Medical Center Dental Hospital) ;
  • Kim, Jeong-Hee (Department of Conservative Dentistry, VHS Medical Center Dental Hospital)
  • 이태용 (한국의료복지공단 중앙보훈병원 치과병원 치과보존과) ;
  • 김미연 (한국의료복지공단 중앙보훈병원 치과병원 치과보존과) ;
  • 김선호 (한국의료복지공단 중앙보훈병원 치과병원 치과보존과) ;
  • 김정희 (한국의료복지공단 중앙보훈병원 치과병원 치과보존과)
  • Received : 2020.02.17
  • Accepted : 2020.04.02
  • Published : 2020.04.30
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Abstract

Purpose:The aim of the present study was to evaluate the incidence of the second mesiobuccal (MB2) canal, root fusion, and C-shaped root canal configuration in the Korean maxillary first (MM1) and second (MM2) molars by analyzing cone-beam computed tomographic (CBCT) images. Materials and methods: Patients undergoing presurgical CBCT examination were included in the current study. The CBCT images of 1498 MM1 and 1742 MM2 from 1658 Korean patients were assessed to determine the incidence of a MB2 canal, the types of canal configurations, root fusion, and C-shaped root canal configurations. Further, the correlations between the incidence of MB2 canal and age, gender, and tooth position were analyzed. Results: The study population was relatively old (mean age: 66.1 years). The percentage of MB2 canals in MB roots was 60.1% and 28.0% in MM1 and MM2, respectively, with the most common configurations being Weine type III in MM1 and Weine type II in MM2. Additionally, the frequency of a MB2 canal decreased with age in both molars and was higher in men than in women in the MM1 only. Furthermore, root fusion was present in 2.3% and 26.2% of the MM1 and MM2, respectively, whereas C-shaped root canals were observed in 0.4% and 2.7% of the MM1 and MM2, respectively. Conclusion: The MB2 canal was found more frequently in the MM1, whereas root fusion and C-shaped root canals were both seen more frequently in the MM2.

목적: Cone-beam computed tomographic (CBCT)를 이용하여 한국인의 상악 제1대구치(MM1), 제2대구치(MM2)에서 제2근심협측(MB2) 근관, 치근 융합 및 C형 근관의 발생률에 대해 평가하였다. 재료 및 방법: 술 전 평가를 위해 CBCT 촬영을 한 환자를 선택했다. 1658명의 환자로부터 1498개의 MM1과 1742개의 MM2의 CBCT 영상이 획득되었고, MB2 근관, 치근융합 및 C형 근관을 분석했다. 연령, 성별 및 치아위치와 MB2 근관 발생률간의 관계도 조사하였다. 결과: 연구표본은 비교적 고령(평균연령: 66.1세)이었다. MB2 근관의 발생률은 MM1, MM2 각각 60.1%, 28.0% 였고, MM1, MM2에서 각각 Weine Type III, Type II가 우세했다. 연령이 증가함에 따라 MB2 근관은 감소하는 경향을 보였으며, MM1에서는 남성에서 MB2 근관이 더 많이 발견되었다. 치근융합은 MM1에서 2.3%, MM2에서 26.2%, C형 근관은 MM1에서 0.4%, MM2에서 2.7%로 모두 MM2에서 발생률이 더 높았다. 결론: MB2 근관은 MM2보다 MM1에서 더 발생률이 높았다. 치근융합과 C형 근관은 모두 MM2에서 더 발생률이 높았다.

Keywords

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