Abstract: Objective: To analyze the imaging characteristics of proximal and occlusal carious lesions with DIAGNOcam system (DC), and to evaluate its ability to diagnose proximal and occlusal caries. Methods: Sixty adults with complete permanent dentition were included. They were examined by visual inspection using international caries detection and assessment system (ICDAS) and DC, and if necessary, bitewing radiographs (BW). Finally 547 teeth were examined by all three methods. Seventy-eight proximal dental carious lesions were treated operatively and the corrrelation of the examination methods were analyzed. Results: ICDAS scores (1-4) of pit and fissure caries were consistent with the extent of shadows on DC image. On the level of dentin caries, the similarity ratio of the detection rate of DC and BW was 93.59%, and the diagnostic accuracy of DC was 100%. Conclusion: DC is an effective examination method to assist the diagnosis of dental caries.

Key words: Occlusal caries, Proximal caries, DIAGNOcam, ICDAS, Bitewing radiograph