http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
치조골 결손 크기에 따른 각 방사선 측정법의 정확도에 관한 연구
남궁혁,신형식 원광대학교 치의학연구소 1993 圓光齒醫學 Vol.3 No.1
This study was performed to investigate the implication of digital subtraction radiography for alveolar bone defect, and to determine whether diagnostic accuracy could be improved over that obtained by a conventional radiographic technique. Ten dried dog s mandible segments were used as experimental specimens. In the mandibular premolar areas, interdental, interradicular, radicular and buccal, lingual defects were # 1, # 2, # 4, # 6, # 8 round burs. 3-4 defects were distributed among the 8 predetermined possible sites. Ten dentists participating in the evaluation were informed of the purpose of the investigation and that lesions would be present in 3-4 sites of the 8 possible sites. Diagnostic accuracy was computed for conventional image, digital subtraction image, contrast enhanced digital subtraction image, color enhanced digital subtraction image. Diagnostic accuracy was higher in digital subtraction technique(82.75 5.74), color enhanced image(84.00 5.67) and contrast enhanced image(84.72 5.68) than conventional image(70.28 9.30). Additionally, small periodontal bone loss(0.64㎜) in subtraction image could be recognized. Data from this study demonstrated that subtraction radiography was a sensitivity and accuracy method to detect osseous lesions associated with periodontal disease. Further study which marry the power of the digital subtraction imaging workstation with the convenience and low radiation dose of the direct digital radiography systems have the potential to allow more precise measurement of alveolar bone changes.