Radiographic and laser fluorescence methods have no benefits for detecting caries in primary teeth

Area of Science:

• Pediatric Dentistry
• Diagnostic Imaging
• Caries Detection

Background:

• Clinical guidelines recommend radiographs for detecting childhood caries.
• Low caries prevalence challenges the effectiveness of adjunct diagnostic methods.
• Visual inspection is the primary method for caries detection in primary molars.

Purpose of the Study:

• To evaluate the performance of visual inspection alone versus combined with radiography and laser fluorescence pen (LFpen) for detecting caries in primary molars.
• To compare the diagnostic accuracy and utility of different caries detection strategies.
• To determine if adjunct methods offer benefits over visual inspection in low-prevalence settings.

Main Methods:

• Two examiners assessed occlusal and approximal caries in primary molars using visual inspection, radiography, and LFpen.
• A reference standard was established using temporary separation for approximal lesions and operative intervention for occlusal lesions.
• Sensitivity, specificity, accuracy, and utility were calculated for each diagnostic strategy.

Main Results:

• Combined strategies (visual inspection + radiography/LFpen) improved sensitivity but reduced specificity.
• No significant differences in accuracy or utility were found between strategies.
• Adjunct methods did not enhance caries detection compared to visual inspection alone in this population.

Conclusions:

• Radiographic and LFpen methods provide no additional benefit for detecting caries in primary teeth beyond visual inspection.
• Current clinical guidelines for caries detection in children may need re-evaluation.
• Visual inspection alone appears sufficient for caries detection in primary molars in low-prevalence populations.