Effect of placing an opaque sealant on Canary Number readings
Objective: This investigation examined the influence of dental sealant on Canary Number (CN) readings measured by The Canary System (CS), an infrared photothermal radiometry and modulated luminescence-based device. The first study measured baseline CN readings of the sealant material. The second study evaluated the ability of CS to detect decay beneath dental sealant compared to other caries detections methods, DIAGNOdent (DD) and ICDAS II visual scoring.
Method: In the first study, four blocks of sealant (3M™ ESPE™ Vanish™) 2mm in thickness and sealant placed in 4 mm deep and 2 mm deep holes drilled in 8 healthy extracted human molars were scanned with CS and DD. In the second study, 28 extracted human molars and premolars composed of 103 potential healthy and carious pits/fissures on their occlusal surfaces, as determined by ICDAS II scoring criteria, were used. After scanning marked pits/fissures with CS and DD, teeth were sealed with 3M™ ESPE™ sealant™ by a clinician. Following sealant placement, teeth were re-scanned at the same sites as before with CS and DD. Using polarized light microscopy (PLM), examined sites were scored as ‘carious’ or ‘non-carious
Result: Baseline CN readings of the sealant were in the healthy zone (CN ≤ 20). In the second study, with PLM as gold standard, sensitivities/specificities of CS, DD and ICDAS II before sealant placement were 0.92/0.70, 0.41/1.0 and 0.77/0.90, respectively, and after sealant placement were 0.83/0.79 and 0.64/0.46 for CS and DD respectively. Correlations of CN with DD and ICDAS before sealant were 0.50 and 0.80 respective, and after sealant was 0.44 with DD.
Conclusion: This study highlighted the potential of the Canary System to assist dental professionals to detect the presence of caries beneath sealants. The caries detection ability of the Canary System was not affected by sealant and was more accurate than DIAGNOdent.
IADR/LAR General Session
2012 IADR/LAR General Session (Iguaçu Falls, Brazil) Iguaçu Falls, Brazil
2012 17 Cariology Research - Detection, Risk Assessment and Others
Abrams, Stephen
( Quantum Dental Technologies, Toronto, ON, Canada
)
Ramalingam, Karthikeyan
( University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
)
