Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • 제32권5호
  • /
  • Pages.464-473
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  • 2006
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  • 2234-7550(pISSN)
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  • 2234-5930(eISSN)
대한구강악안면외과학회 (The Korean Association of Oral and Maxillofacial Surgeons)
권호 표지

방사선 사진을 이용한 하악 제3대구치와 하치조신경의 관계에 대한 연구

THE STUDY OF EVALUATION TO RELATIONSHIP BETWEEN THE INFERIOR ALVEOLAR NERVE AND THE MANDIBULAR THIRD MOLAR BY USING RADIOGRAPHIC IMAGE

  • 김종협 (전남대학교 치과대학 구강악안면외과학교실, 전남대학교 치의학연구소) ;
  • 구홍 (전남대학교 치과대학 구강악안면외과학교실, 전남대학교 치의학연구소) ;
  • 안진석 (전남대학교 치과대학 구강악안면외과학교실, 전남대학교 치의학연구소) ;
  • 국민석 (전남대학교 치과대학 구강악안면외과학교실, 전남대학교 치의학연구소) ;
  • 박홍주 (전남대학교 치과대학 구강악안면외과학교실, 전남대학교 치의학연구소) ;
  • 오희균 (전남대학교 치과대학 구강악안면외과학교실, 전남대학교 치의학연구소)
  • Kim, Jong-Hyoup (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, School of Dentistry, Chonnam National University) ;
  • Gu, Hong (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, School of Dentistry, Chonnam National University) ;
  • An, Jin-Suk (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, School of Dentistry, Chonnam National University) ;
  • Kook, Min-Suk (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, School of Dentistry, Chonnam National University) ;
  • Park, Hong-Ju (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, School of Dentistry, Chonnam National University) ;
  • Oh, Hee-Kyun (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, School of Dentistry, Chonnam National University)
  • 발행 : 2006.10.30
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초록

Purpose: This study was performed to evaluate relationship between the inferior alveolar nerve injury and the findings of panoramic and tomographic images for preventing inferior alveolar nerve injury after the 3rd molar extraction. Material and Method: From April, 2005 to June, 2005, The 190 patients who visited in the Department of Oral and Maxillofacia Surgery, Chonnam National University Hospital and the panoramic radiographies were taken for extraction of the mandibular third molar, was selected. Among 215 mandibular third molars, Scanora tomographic imagings were taken in the 90 teeth which were overlaped to the mandibular canal in the panoramic imagies. In panoramic radiographies, the angulation, the level, the root morphology, and the superimposition sign of the mandibular third molars with the mandibular canal were evaluated. In the tomographic radiographies, the location and distance of the mandibular third molar from the canal were also evaluated. The relationships between these findings and the inferior alveolar nerve injury were examined. Results: In the panoramic findings, the inferior alveolar nerve injuries were occurred in the darkened roots (5 molars, 7%), the uncontinuous radiopaque image (3 molars, 7%), and the depositioned mandibular canal (2 molars, 10%). In the tomographic findings of 90 molars, 20 molars also had the superimposition imagies. Five molars in those molars (25%) had the inferior alveolar nerve injury after extraction. There were 10 patients who had the inferior alveolar nerve injury. The sensory was began to be recovered in 9 patients, except 1 patient, within 2 weeks, then fully recovered within 3 months. Conclusion: These results indicate that the depth mandibular third molar and the superimposition sign may be related with the risk of the inferior alveolar nerve injury after extraction.

키워드

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