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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN: 1677-3225
Vol. 14, No. 1, 2015, pp. 5-9
Bioline Code: os15002
Full paper language: English
Document type: Research Article
Document available free of charge

Brazilian Journal of Oral Sciences, Vol. 14, No. 1, 2015, pp. 5-9

 en Is there difference of Streptococcus mutans check for this species in other resources count and adherence on amalgam and resinocclusal restorations? A blind clinical study
Grez, Patricio Agustin Vildósola; Godoy, Eduardo Fernandez; Fluxá, Patricia Palma; Cortés, Gustavo Adolfo Moncada; Saad, Jose Roberto Cury & Casielles, Javier Martin


Aim: To compare the number of colony forming units (CFU) and agar adherence of S. mutans check for this species in other resources on amalgam (AM) and resin composite (RC) occlusal restorations. Sixty-five healthy patients older than 18 years with high caries risk who had at least one occlusal AM and RC restorations (n=130) were selected. Methods: The restorations were evaluated according to the alpha Ryge criteria (Cohen-Kappa 0.8). For each patient, a biofilm sample was taken using an impression tray technique with previously loaded with solid trypticase yeast extract cysteine sucrose with bacitracin agar placed over the AM restorations and RC restorations in the same patients. The tray was placed inside an oven at 37 °C for 48 h, and the S. mutans count was then performed. Data were analyzed with the test Wilcoxon with a 95% confidence level. Results: RC restorations had statistically significant higher number of CFU of S. mutans than AM restorations (p<0.05). Conclusions: In adult patients with high caries risk, RC occlusal surfaces showed greater agar adherence of S. mutans count than AM restorations.

Streptococcus mutans; composite resins; dental amalgram

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