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Study finds TRIOS 4 caries detection on par with clinical visual inspection

A new Journal of Dentistry study has found that caries detection with 3Shape TRIOS 4 delivers “similar diagnostic performance to the clinical visual inspection when detecting and classifying occlusal caries lesions on permanent teeth.”

The study concludes: “on-screen visual inspection of caries lesions on 3D dental models obtained using an intraoral scanner can be used to aid the detection and classification of occlusal caries with an accuracy equivalent to that of the clinical visual inspection.”

Caries detection

The study was conducted by randomly selecting fifty-three permanent posterior teeth that had been scheduled for extraction. One to three independent examination sites on the occlusal surface of each tooth were clinically inspected using International Caries Detection and Assessment System (ICDAS) criteria. Afterwards, the examined teeth were scanned intraorally with TRIOS 4.

Six months after the clinical examination, the same examiner conducted the on-screen assessment of the obtained 3D digital dental models at the selected examination sites using modified ICDAS criteria. Both tooth color and fluorescence texture with high resolution were assessed.

Lastly, an independent examiner conducted the histological examination of all teeth after extraction. Using histology as the reference test, Sensitivity (SE), Specificity (SP), Accuracy (ACC), area under the Receiver Operating Characteristic (ROC) curve, and Spearman's correlation coefficient were calculated for the clinical and on-screen ICDAS assessments.

Study: Occlusal caries detection on 3D models obtained with an intraoral scanner. A validation study Ntovas, S. Michou, AR Benetti, A Bakhshandeh, K Ekstrand, C Rahiotis, A Kakaboura.

TRIOS caries detection is unavailable in certain countries. Please contact your reseller to learn more.