The Canary System is More Accurate Than X-Rays for Detecting Proximal Caries

Just published in the Journal of Investigative and Clinical Dentistry on May 27, 2015:

Proximal caries lesion detection using the Canary Caries Detection System: an in vitro study

 Authors:  Janja Jan, Wan Zaripah Wan Bakar, Sapna M. Mathews, Linda O. Okoye, Benjamin R. Ehler, Christopher Louden, Bennett T. Amaechi


Objective:  This study investigated the accuracy of the Canary System (CS) to detect proximal caries lesions in vitro, and compared it with conventional methods: International Caries Detection and Assessment System (ICDAS) II and bitewing radiography (BW).

Methods:  Visible proximal surfaces of extracted human teeth were assessed by ICDAS-II before setting them in five manikin mouth models. Then contacting proximal surfaces in mouth models were assessed by BW and CS. Histological validation with polarized-light microscopy served as a gold standard. Pairwise comparisons were performed on area under the curve (AUC), sensitivity, and specificity of the three methods, and corrected using Bonferroni’s method. Sensitivities and specificities were compared using a test of proportions and AUC values were compared using DeLong’s method.

Results:  The CS presented significantly higher sensitivity (0.933) than ICDAS-II (0.733, P = 0.01) and BW (0.267, P < 0.001), and ICDAS-II higher sensitivity than BW (P < 0.001). There were no significant differences between their specificity values: 0.825 (CS), 0.65 (ICDAS-II), and 0.875 (BW). The AUC of CS (0.862) was significantly higher than of ICDAS-II (0.681, P < 0.001) and BW (0.577, P < 0.001).

Conclusion:  The Canary System demonstrated greater accuracy in detecting proximal lesions than ICDAS-II (visual exam) and BiteWing X-Rays, although without significantly higher specificity.

So what does this all mean?  This study done on extracted teeth concludes that The Canary System is more accurate than the current gold standard, x-rays, for detecting caries between teeth.  X-Rays are only designed for detecting decay on this one surface while The Canary System can detect decay on all tooth surfaces, beneath opaque sealants and around and beneath the intact margins of crowns and fillings.

The Canary System is the solution for the detection and monitoring of tooth decay.