A comparison of S. mutans clinical assessment methods

Area of Science:

• Oral microbiology
• Pediatric dentistry
• Diagnostic methods

Background:

• Streptococcus mutans (S. mutans) are key etiological agents of dental caries.
• Accurate assessment of S. mutans levels is vital for early caries risk stratification, particularly in young children.
• Existing diagnostic methods for S. mutans may vary in their reliability and agreement.

Purpose of the Study:

• To compare the diagnostic accuracy of three methods for S. mutans assessment: tongue blade/Rodac plate, Cariescreen, and a modified Cariescreen.
• To evaluate the agreement between these methods in quantifying S. mutans levels in preschool-aged children.

Main Methods:

• Ninety-one triple tests were conducted on 23 children aged 1 to 4 years.
• S. mutans counts were obtained using the standard tongue blade/Rodac plate method, the Cariescreen method, and a modified Cariescreen approach.
• Statistical analysis included calculating percentage agreement and the linear product moment correlation coefficient.

Main Results:

• The modified Cariescreen method demonstrated 86.3% agreement with the tongue blade/Rodac plate method.
• The standard Cariescreen method showed only 72.2% agreement with the tongue blade/Rodac plate method.
• Discrepancies were most notable in the moderate S. mutans count range, with a correlation coefficient of +.69 between the modified Cariescreen and tongue blade/Rodac methods.

Conclusions:

• The modified Cariescreen method offers a more favorable comparison to the established tongue blade/Rodac plate assessment for S. mutans.
• This enhanced diagnostic approach may improve the reliability of caries risk assessment in pediatric populations.
• Further validation of the modified Cariescreen method in diverse pediatric cohorts is warranted.