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논문 기본 정보

자료유형
학술저널
저자정보
선경훈 (연세대학교 치과대학 구강악안면방사선과학교실, 구강과학연구소) 정호걸 (연세대학교 치과대학 구강악안면방사선과학교실, 구강과학연구소) 박혁 (연세대학교 치과대학 구강악안면방사선과학교실, 구강과학연구소) 박창서 (연세대학교 치과대학 구강악안면방사선과학교실, 구강과학연구소) 김기덕 (연세대학교 치과대학 구강악안면방사선과학교실, 구강과학연구소)
저널정보
대한영상치의학회 대한구강악안면방사선학회지 대한구강악안면방사선학회지 제39권 제1호
발행연도
2009.1
수록면
27 - 33 (7page)

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Purpose: The purpose of this study was to evaluate the clinical usefulness of the recently developed multi-detector computed tomography and cone beam computed tomography in pre-operative implant evaluation, by comparing them with the single detector computed tomography, already confirmed for accuracy in this area. Materials and Methods: Five partially edentulous dry human mandibles, with $1{\times}1mm$ gutta percha cones, placed in 5mm intervals posterior to the mental foramen on each side of the buccal part of the mandible, were used in this study. They were scanned as follows: 1) Single detector computed tomography: slice thickness 1mm, 200mA, 120kV 2) Multi-detector computed tomography: slice thickness 0.75mm, 250mA, 120kV 3) Cone beam computed tomography: 15mAs, 120kV Axial images acquired from three computed tomographies were transferred to personal computer, and then reformatted cross-sectional images were generated using V-Implant $2.0^{(R)}$ (CyberMed Inc., Seoul, Korea) software. Among the cross-sectional images of the gutta perch a cone, placed in the buccal body of the mandible, the most precise cross section was selected as the measuring point and the distance from the most superior border of the mandibular canal to the alveolar crest was measured and analyzed 10 times by a dentist. Results: There were no significant intraobserver differences in the distance from the most superior border of the mandibular canal to the alveolar crest (p>0.05). There were no significant differences among single detector computed tomography, multi-detector computed tomography and cone beam computed tomography in the distance from the most superior border of the mandibular canal to the alveolar crest (p>0.05). Conclusion: Multi-detector computed tomography and cone beam computed tomography are clinically useful in the evaluation of pre-operative site for mandibular dental implants, with consideration for radiation exposure dose and scanning time.

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