Journal of Korean Academy of Oral and Maxillofacial Radiology (치과방사선)

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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A RADIOLOGICAL STUDY ON THE ADDITIONAL ROOT OF THE MANDIBULAR FIRST MOLARS AND PREMOLARS

하악 제1대구치와 소구치의 과잉치근에 관한 방사선학적 연구

  • Park Mi-Kyung (Department of Dental Radiology, College of Dentistry, Kyungpook National University) ;
  • Na Chae-Young (Department of Dental Radiology, College of Dentistry, Kyungpook National University) ;
  • Choi Karp-Shik (Department of Dental Radiology, College of Dentistry, Kyungpook National University)
  • 박미경 (경북대학교 치과대학 치과방사선학교실) ;
  • 나채영 (경북대학교 치과대학 치과방사선학교실) ;
  • 최갑식 (경북대학교 치과대학 치과방사선학교실)
  • Published : 1993.06.01
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Abstract

The purpose of this study was to evaluate the prevalence and distribution of additonal root in the mandibular 1st molars and premolars by means of the analysis of the full mouth periapical radiographs in 6,082 patients visited the Dental Infirmary of Kyungpook National University Hospital from March 1989 to February 1993. The results were as follows: 1. The incidence of additional root in the mandibular 1st molars was revealed to be 9.32% in total examined patients, and there was a higher prevalence in males(I1.35%) than in females(7.46%). And bilateral occurrence was revealed to be 4.26%. 2. The incidence of additional root in the mandibular premolars was to be 3.57% in total examined patients, and there was a higher prevalence in males(4.28%) than in females(2.91%). And bilateral occurrence in the 1st premolars was revealed to be 1.53%.

저자들은 평행촬영법으로 촬영된 총 6,082명(남자 2,918명, 여자 3,164명)의 구내전악 표준방사선사진을 판독하여 하악 제1대구치와 소구치에서 과잉치근이 발생된 경우를 조사하고 성별, 발생률, 발생부위를 분석하여 다음의 결과를 얻었다. 1. 하악 제1대구치에서 과잉치근의 발생은 9.32%였으며, 남성은 11.35%, 여성은 7.46%으로서 여성에 비해 남성에서의 발생률이 더 높았다. 양측성으로 발생된 경우는 4.26%이었다. 2. 하악 소구치에서 과잉치근의 발생은 3.57%이었으며, 남성은 4.28%, 여성은 2.91%으로서 여성에 비해 남성에서의 발생률이 더 높았다. 제1소구치에서 양측성으로 발생된 경우는 1.53%이었다.

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