Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Detection method of proximal caries using line profile in digital intra-oral radiography

디지털 구내방사선사진에서 라인 프로파일을 이용한 인접면우증식의 인지 방법

  • Park, Jeong-Hoon (Department of Biomedical Engineering, College of Medicine, Kyung Hee University) ;
  • Choi, Yong-Suk (Department of Oral and Maxillofacial Radiology, School of Dentistry and Institute of Oral Biology, Kyun Hee University) ;
  • Kim, Gyu-Tae (Department of Oral and Maxillofacial Radiology, School of Dentistry and Institute of Oral Biology, Kyun Hee University) ;
  • Hwang, Eui-Hwan (Department of Oral and Maxillofacial Radiology, School of Dentistry and Institute of Oral Biology, Kyun Hee University) ;
  • Lee, Gi-Ja (Department of Biomedical Engineering, College of Medicine, Kyung Hee University) ;
  • Choi, Sam-Jin (Department of Oral and Maxillofacial Radiology, School of Dentistry and Institute of Oral Biology, Kyun Hee University) ;
  • Park, Hun-Kuk (Department of Biomedical Engineering, College of Medicine, Kyung Hee University)
  • Published : 2009.12.31
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Abstract

Purpose : The purpose of this study was to investigate how to detect proximal caries using line profile and validate linear measurements of proximal caries lesions by basic digital manipulation of radiographic images. Materials and Methods : The X-ray images of control group (15) and caries teeth (15) from patients were used. For each image, the line profile at the proximal caries-susceptible zone was calculated. To evaluate the contrast as a function of line profile to detect proximal caries, a difference coefficient (D) that indicates the relative difference between caries and sound dentin or intact enamel was measured. Results : Mean values of D were $0.0354{\pm}0.0155$ in non-caries and $0.2632{\pm}0.0982$ in caries (p<0.001). Conclusion : The mean values of caries group were higher than non-caries group and there was correlation between proximal dental caries and D. It is demonstrated that the mean value of D from caries group was higher than that of control group. From the result, values of D possess great potentiality as a new detection parameter for proximal dental caries.

Keywords

References

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