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:: Volume 11, Issue 11 (1-2012) ::
3 2012, 11(11): 0-0 Back to browse issues page
Effect of Bovine Milk on Streptococcus mutans Biofilm Cariogenic Properties and Enamel and Dentin Demineralization
Cecilia Muñoz-Sandoval , María José Muñoz-Cifuentes , Rodrigo A Giacaman * , Renzo A. Ccahuana-Vasquez , Jaime A. Cury
Cariology Unit, Department of Oral Rehabilitation, the University of Talca, Talca, Chile
Abstract:   (2117 Views)

 Purpose: The purpose of this study was to evaluate the effect of whole bovine milk on Streptococcus mutans biofilms and on demineralization of enamel and root dentin.

 Methods: S mutans UA159 biofilms were cultured on enamel and dentin bovine slabs of known surface hardness (SH) and exposed (8x/day) to 10% sucrose (positive control), whole bovine milk, and 4.5% lactose. Biofilm acidogenicity was estimated by medium pH (2x/day). After 4 days for dentin and 5 days for enamel, biofilms were collected to obtain biomass, viable bacteria, total protein, and intra- and extracellular polysaccharides. Final SH was measured on the slabs. Demineralization was calculated as percentage of SH loss (%SHL). Differences were determined by analysis of variance and Tukey's test (P<.05).

 Results: Biofilms formed on both substrates under 10% sucrose showed higher acidogenicity, biomass, protein concentration, insoluble polysaccharides, and %SHL than those treated with milk or lactose (P<.05), which did not differ in any parameter (P>.05). Higher bacterial counts were obtained from biofilms treated with milk on enamel, but not on dentin. Dentin was significantly more demineralized by milk than enamel (P<.05).

 Conclusions: Although bovine milk appears to be less cariogenic than sucrose, this dairy product should not be considered caries-safe.


 Source: Journal of American Academy of Pediatric Dentistry

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Type of Study: Research | Subject: Pediatric Dentistry
Received: 2013/01/15 | Published: 2012/01/15
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Muñoz-Sandoval C, Muñoz-Cifuentes M J, Giacaman R A, Ccahuana-Vasquez R A, Cury J A. Effect of Bovine Milk on Streptococcus mutans Biofilm Cariogenic Properties and Enamel and Dentin Demineralization. 3 2012; 11 (11)
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Volume 11, Issue 11 (1-2012) Back to browse issues page
جامعه اسلامی دندانپزشکان Islamic Dental Association of IRAN

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