Indian Journal of Dentistry
Volume 2, Issue 4 , Pages 123-128, October 2011

Comparative study on the microbial adhesion to preveneered and stainless steel crowns

  • Bin Alshaibah WM, BDS

      Affiliations

    • Postgraduate Student, Cairo University, Cairo, Egypt.
    • Corresponding Author InformationCorrespondence: Bin AlShaibah WM, Postgraduate Student, Department of Pediatric Dentistry, Cairo University, Cairo, Egypt
    • ,
  • El-Shehaby Fatma Ahmed, PhD

      Affiliations

    • Professor, Cairo University, Cairo, Egypt.
    • ,
  • El-Dokky N Anorhan Abdo, PhD

      Affiliations

    • Lecturer, Department of Pediatric Dentistry, Cairo University, Cairo, Egypt.
    • ,
  • Reda Ala'a Reda, PhD

      Affiliations

    • Lecturer, Department of Microbiology, Cairo University, Cairo, Egypt.

Received 10 October 2011; accepted 2 November 2011.

Article Outline

Abstract 

Introduction

This in vivo study aims in evaluating both the adhesion of Streptococcus mutans to preveneered and stainless steel crowns (SSC) and the effects of these restorations on the gingival health and oral hygiene.

Materials and Method

Twenty patients (3–5 years of age) were selected from the outpatient clinic of the Pedodontics Department, Faculty of Oral and Dental Medicine, Cairo University. The selected patient had decayed-missed-filled (dmf) index for primary dentition ≤4, including lower right and left first primary molars. Each tooth was pulpotomy-treated and restored with either type of crowns (split-mouth technique). Then, 10 swabs from the buccal mucosa, preveneered crown and SSC surfaces were taken from each patient. Also, the gingival index (GI) and oral hygiene index (OHI-S) were measured in different times during the study. Mitis Salivarius Bacitracin Agar (MSBA) was used as a selective media for S. mutans growth. The MSBA plates were put in candle jar and incubated aerobically in 37°C for 48 hours. Finally, bacteria were counted and expressed in colony forming unit (CFU).

Statistical Analysis and Results

After 1, 2, and 4 weeks of study, mucosa and crown swabs of preveneered crown showed statistically significant higher mean CFU counts than SSC. Throughout the whole study period, two restorations revealed a statistically significant decrease in mean CFU counts. Also, there was a statistically significant positive (direct) correlation between OHI-S, GI and S. mutans counts on both restorations.

Conclusion

The adhesion of S. mutans to preveneered crowns was higher than SSC. Full mouth rehabilitation led to a significant decrease in S. mutans count in the short term. An increase in S. mutans counts is associated with an increase in OHI-S and GI.

Keywords:  Preveneered crown , primary teeth , stainless steel crown , Streptococcus mutans

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PII: S0975-962X(11)60031-2

doi:10.1016/S0975-962X(11)60031-2

Indian Journal of Dentistry
Volume 2, Issue 4 , Pages 123-128, October 2011

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