Journal of Korean Academy of Oral Health

The Korean Academy of Preventive Dentistry and Oral Health (대한예방치과·구강보건학회)
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In vitro quantification of occlusal caries lesion using QLF-D, ICDAS, and DIAGNOdent

QLF-D, ICDAS, DIAGNOdent를 이용한 발거된 치아의 교합면 우식증의 정량화 비교

  • Kang, Si-Mook (Department of Preventive Dentistry & Public Oral Health, Yonsei University College of Dentistry) ;
  • Min, Ji-Hyun (Department of Preventive Dentistry & Public Oral Health, Yonsei University College of Dentistry) ;
  • Kim, Han-Na (Department of Preventive and Community Dentistry, Pusan National University School of Dentistry) ;
  • Kim, Baek-Il (Department of Preventive Dentistry & Public Oral Health, Yonsei University College of Dentistry) ;
  • Kim, Jin-Bom (Department of Preventive and Community Dentistry, Pusan National University School of Dentistry) ;
  • Jeong, Seung-Hwa (Department of Preventive and Community Dentistry, Pusan National University School of Dentistry)
  • 강시묵 (연세대학교 치과대학 예방치과학교실) ;
  • 민지현 (연세대학교 치과대학 예방치과학교실) ;
  • 김한나 (부산대학교 치의학전문대학원 예방치과학교실) ;
  • 김백일 (연세대학교 치과대학 예방치과학교실) ;
  • 김진범 (부산대학교 치의학전문대학원 예방치과학교실) ;
  • 정승화 (부산대학교 치의학전문대학원 예방치과학교실)
  • Received : 2014.05.29
  • Accepted : 2014.06.21
  • Published : 2014.06.30
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Abstract

Objectives: To compare the QLF-D method and the ICDAS and DIAGNOdent techniques for in vitro quantification of occlusal caries and to assess the histological features of the caries. Methods: One hundred and twenty-two extracted permanent teeth were selected, and the site of interest on the occlusal surface was examined using each detection method. The occlusal sites were classified according to the ICDAS II criteria based on the decision taken by two investigators, who have taken the ICDAS E-learning course. The examined site was then measured using the DIAGNOdent, and the peak value was recorded. In addition, by using the QLF-D, the occlusal site was photographed to obtain the ${\Delta}Fmax$ value. After all assessments were performed, the occlusal sites were vertically sectioned in order to assess the histological features. This was considered the gold standard. The histological criteria were graded using a 4-point scale as follows: S=sound (n=21), E1=limited enamel caries (n=27), E2=caries extending to the dento-enamel junction (n=49), D=caries involving the dentine (n=25). Results: An ICDAS code between 0 and 4 was assigned to all the occlusal sites, and this revealed the QLF-D value, which was between -95 to 0. The DIAGNOdent value was between 8 and 99. The correlation values of QLF-D, ICDAS, and DIAGNOdent with the histological features were 0.68, 0.58, and 0.46, respectively (P<0.01). A highly significant correlation was observed between QLF-D and the gold standard, which showed a moderate correlation and an acceptable correlation was observed with ICDAS (r=0.75, P<0.01). A statistically significant difference was observed in the average QLF-D values of each histological grade i.e., -28.5 (S), -53.7 (E1), -68.1 (E2), and -84.4 (D). Conclusions: The QLF-D showed a significant correlation with the ICDAS and histological features. Therefore, visual inspection with QLF-D would improve the detection accuracy and ensure early diagnosis of dental caries.

Keywords

Acknowledgement

Supported by : 부산대학교

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