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실험적 치조백선 병소부에 관한 방사선학적 연구

A Radiographic Study on the Artificially Induced Lesions Involving Lamina Dura

구강생물학연구 1988년 12권 1호 p.89 ~ 101
김영진, 김재덕,
소속 상세정보
김영진 ( Kim Young-Jin ) - 조선대학교 치과대학 구강악안면방사선학교실
김재덕 ( Kim Jae-Deok ) - 조선대학교 치과대학 구강악안면방사선학교실

Abstract


This study was performed to simulate various sizes of periapica.l lesions and condensing osteitis in bone and to clarify that condensing osteitis would give a greater radiographic c)ntrast because of the more radiopacity immediately adjacent to the lesion and what the lamina dura on radiogram is in bone.
For this study, two dry and wet human adult mandible and a cadaver were used.
Each mandible was sectioned longitudinally to split lingual and buccal- cortical plates to gain better access to the apex of tooth. Lesions were gradually enlarged and bordered %N,ith tooth ash that burned out at 9501C for the reproduction of condensing osteitis in sequence.
The serial radiograms were taken under the constantly maintained condition and compared with the actual lesions.
The obtained results were as follows:
1. 2^(㎜) thick destruction around apex in all steps made periodontal space widening and loss of lamina dura on radiogram in cadaver.
2. 1^(㎜) thick destruction with border of tooth ash at posterior teeth showed periodontal space widening and loss of lamina dura on radiogram in all mandible.
3. 5^(㎜) diameter lesion with tooth ash border within cancellous bone showed slightly increased radiolucency with faint trabecular pattern within the lesion compared to surrounding bone and radiopaque line border.
4. The lamina dura appeared on radiogram may be recognized as dense bone and determined according to the contour of socket and the direction of the central beam of x-radiation.
5. There was no difference in radiographic features between of the lesion in dry mandible and of that in wet mandible.

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