Detectability of Ektaspeed Plus Film, Digitized and Digora Images for Artificial Periapical Bone Lesions

Ektaspeed Plus 방사선사진, 간접 디지털 영상 및 Digora 영상의 치근단 병소의 판독능 비교

  • Cho Bong-Hae (Department of Dental Radiology College of Dentistry Pusan National University) ;
  • Nah Kyung-Soo (Department of Dental Radiology College of Dentistry Pusan National University) ;
  • Lee Hee-Joo (Department of Operative Dentistry, College of Dentistry Pusan National University)
  • 조봉혜 (부산대학교 치과대학 치과방사선학교실) ;
  • 나경수 (부산대학교 치과대학 치과방사선학교실) ;
  • 이희주 (부산대학교 치과대학 보존학교실)
  • Published : 1998.08.01

Abstract

The comparative detectability of the artificial periapical defects among Ektaspeed Plus film. digitized and digora images was evaluated. The artifical defects were made in the cancellous bone and cancellous-cortical junction with the size of 1.0×0.8mm², 1.4×1.1mm² and 2.8×2.2mm². The defects in cancellous-cortical junction extended into cortical bone with the depth of 0, 0.5 and 1.0 mm. The results were as follows : 1. In junctional defects Ektaspeed Plus film for 2.8×12.2mm² defect showed the highest detectability. But significant difference were only found between Ektaspeed Plus films and digitized images (p<0.05). 2. Almost all defects within cacellous bone were not detected except a few digitized and Digora images for the size of 2.8×2.2mm². Digora images for them showed significant differences with Ektaspeed Plus films and digitized images (p<0.05). 3. The sensitinity of all imaging modalities were 0.9 or 1.0 in junctional defects for the size of 1.4×2.2mm² and 2.8×2.2mm². For cancellous defects, Digora image showed the highest sensitivity of 0.6 for the size of 2.8×2.2mm². 4. Significant differences for change of exposure time were found in most group of Ektaspeed Plus films and digitized images (p<0.05) . But there was no significant differences in Digora images for cacellous defects.

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