Is there difference of Streptococcus mutans count and adherence on amalgam and resin occlusal restorations? A blind clinical study

Authors

  • Patricio Agustin Vildósola Grez Universidad de Chile
  • Eduardo Fernandez Godoy Universidad de Chile
  • Patricia Palma Fluxá Universidad de Chile
  • Gustavo Adolfo Moncada Cortés Universidad Mayor
  • Jose Roberto Cury Saad Universidade Estadual Paulista – UNESP
  • Javier Martin Casielles Universidad de Chile

DOI:

https://doi.org/10.20396/bjos.v14i1.8640837

Keywords:

Streptococcus mutans, Composite resins, Dental amalgam

Abstract

Aim: To compare the number of colony forming units (CFU) and agar adherence of S. mutans 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.

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Author Biographies

Patricio Agustin Vildósola Grez, Universidad de Chile

Universidad de Chile, Dental School, Department of Restorative Dentistry, Santiago, Chile.

Eduardo Fernandez Godoy, Universidad de Chile

Universidad de Chile, Dental School, Department of Restorative Dentistry, Santiago, Chile.

Patricia Palma Fluxá, Universidad de Chile

Universidad de Chile, Dental School, Department Medicine and Oral Pathology, Area of Microbiology, Santiago, Chile

Gustavo Adolfo Moncada Cortés, Universidad Mayor

Universidad Mayor, Dental School, Area of Cariology, Santiago, Chile.

Jose Roberto Cury Saad, Universidade Estadual Paulista – UNESP

Universidade Estadual Paulista – UNESP, Araraquara Dental School, Department of Restorative Dentistry, Araraquara, SP.

Javier Martin Casielles, Universidad de Chile

Universidad de Chile, Dental School, Department of Restorative Dentistry, Santiago, Chile.

Published

2015-03-30

How to Cite

1.
Grez PAV, Godoy EF, Fluxá PP, Cortés GAM, Saad JRC, Casielles JM. Is there difference of Streptococcus mutans count and adherence on amalgam and resin occlusal restorations? A blind clinical study. Braz. J. Oral Sci. [Internet]. 2015 Mar. 30 [cited 2022 Oct. 3];14(1):5-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640837

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