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The Effect of the Axial Plane on Measurement of Available Bone Height for Dental Implant in Computed Tomography of the Mandible : 하악의 전산화 단층사진에서 횡단면이 임플랜트를 위한 가용골 높이의 결정에 미치는 영향
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- Authors
- Issue Date
- 2002
- Publisher
- 대한치주과학회
- Citation
- 대한치주과학회지 2002;32:1-14
- Keywords
- axial plane ; available bone height ; CT ; inferior alveolar canal ; dental implant ; 횡단면 ; 가용골 높이 ; 하악관 ; 치과 임플랜트
- Abstract
- For the success of dental implant, accurate radiographic evaluation is
prerequisite for planning the location of the osseointegrated implants and avoiding
injury to vital structures. CT/MPR(computed tomography/multiplanar reformation)
shows improved visualization of inferior alveolar canal. In order to obtain
cross-sectional images parallel to the teeth, the occlusal plane is used to orientate
for the axial plane. If the direction of axial plane is not parallel to the occlusal
plane, the reformatted cross-sectional scans will be oblique to the planned fixture
direction and will not show the actual dimension of the planned fixture's location.
If the available bone height which measured in the cross-sectional view is much
greater than the actual available bone height, penetration of canal may occur. The
aim of this study is to assess the effect of the axial plane to measurement of
available bone height for dental implant in computed tomography of the mandible.
40 patients who had made radiographic stents and had taken CT were selected.
The sites that were included in the study were 45 molar regions. In the central
panoramic scan, the length from alveolar crest to superior border of inferior
alveolar canal(available bone height, ABH) was measured in direction of
reformatted cross-sectional plane(uncorrected ABH).
- ISSN
- 0250-3352
- Language
- English
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