Maxillofacial Plastic and Reconstructive Surgery

  • 제31권6호
  • /
  • Pages.492-498
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  • 2009
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  • 2288-8101(pISSN)
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  • 2288-8586(eISSN)
대한악안면성형재건외과학회 (Korean Association of Maxillofacial Plastic and Reconstructive Surgeons)
권호 표지

제3대구치와 하악관과의 위치 관계에서 치과용 Cone beam CT의 유용성

POSITIONAL RELATIONSHIP OF THE MANDIBULAR CANAL AND IMPACTED THIRD MOLARS BY USING DENTAL CONE BEAM COMPUTED TOMOGRAPHY

  • 추연규 (경북대학교 치의학전문대학원 구강악안면외과학교실) ;
  • 박영인 (경북대학교 치의학전문대학원 구강악안면외과학교실) ;
  • 김진욱 (영남대학교 의과대학 부속병원 치과 구강악안면외과학교실) ;
  • 이상한 (경북대학교 치의학전문대학원 구강악안면외과학교실)
  • Chu, Yeon-Gyu (Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Park, Young-In (Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Kim, Jin-Wook (Department of Oral and Maxillofacial Surgery, College of Medicine, Yeungnam University) ;
  • Lee, Sang-Han (Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University)
  • 투고 : 2009.07.08
  • 심사 : 2009.11.06
  • 발행 : 2009.11.20
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초록

We sought to evaluate the relationship between the mandibular canal and impacted mandibular third molars by using dental cone beam computed tomograph(CBCT) for third molar surgery. A total of 111 patients(177 teeth) offered the images through CBCT and panoramic radiography for the extraction of the mandibular third molars. In CBCT, the accurate relationship between the third molar and the mandibular canal were evaluated. In panoramic radiographies, we evaluated the impacted level and superimposition sign of the mandibular third molar with the mandibular canal, and also, the radiopacity of the white line in the canal. Data were statistically analyzed and estimated by $X^2$-test. In CBCT finding, high prevalence of contact between the mandibular canal and roots occured in the deep impacted third molars, narrowing mandibular canals, bending mandibular canals and cases where the radiopacity of white line of canals were "absence" on panoramic images. It showed statistical significance (P<0.05). When evaluating the mandibular canal and the roots through the panoramic radiography for third molar extraction, it could be difficult to diagnosis accurately. Thus, it is required to have an accurate diagnostic approach through CBCT that could evaluated the location between mandibular canal and root.

키워드

참고문헌

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