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Association between interdental plaque acidogenicity and caries risk at surface level: a cross sectional study in primary dentition.

Journal article
Authors Maria Grazia Cagetti
Guglielmo Campus
Silvana Sale
Fabio Cocco
Laura Strohmenger
Peter Lingström
Published in International journal of paediatric dentistry
Volume 21
Issue 2
Pages 119-125
ISSN 1365-263X
Publication year 2011
Published at Institute of Odontology
Pages 119-125
Language en
Subject categories Cariology


International Journal of Paediatric Dentistry 2010 Background. In schoolchildren the most commonly decayed primary teeth are molars affecting proximal adjacent surfaces especially. Aim. To determine whether a more acidic plaque in response to sucrose challenge is detected in children with more carious lesions. Design. Plaque pH measurements, using the microtouch technique, were carried out in interproximal spaces between primary molars, in 157 high caries risk children (314 sites and caries status of the 628 proximal surfaces recorded). The area under the curve (AUC(5.7) and AUC(6.2)) was analyzed. Results. The AUC(5.7) and the AUC(6.2) showed a statistically significant difference between plaque adjacent to proximal surfaces with or without caries. Differences for AUC(5.7) and AUC(6.2) were recorded between one decayed surface compared to two decayed surfaces (P < 0.01) whereas a statistical significant difference was only observed for AUC(5.7), when the areas under the curve were obtained near one decayed surface compared to two sound surfaces (P = 0.04). Conclusions. The higher acidogenicity of the dental plaque found in presence of a proximal carious lesion in primary maxillary molars represents an additional risk factor for the adjacent surface. This finding may help clinicians in treatment decisions.

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