title: Bacterial adhesion of porphyromonas gingivalis on provisional fixed prosthetic materials.
abstract: BACKGROUND
  When provisional restorations are worn for long term period, the adhesion of bacteria becomes a primary factor in the development of periodontal diseases. The aims of this study were to evaluate the surface roughness and bacterial adhesion of four different provisional fixed prosthodon-tic materials.
  
  
  METHODS
  Ten cylindrical specimens were prepared from bis-acrylic composites (PreVISION CB and Protemp 3 Garant), a light-polymerized composite (Revotek LC), and a polymethyl methacrylate-based (Dentalon) provisional fixed prosthodontic materials. Surface roughness was assessed by profilometry. The bacterial adhesion test was applied using Porphyromonas gingivalis (P. gingivalis) and spectro-fluorometric method. Statistical analysis was performed using ANOVA and Dunnett t-tests.
  
  
  RESULTS
  All tested materials were significantly rougher than glass (P < 0.05). Revotek LC had the greatest fluorescence intensity, PreVISION and Protemp 3 Garant had moderate values and all of them had significantly more bacterial adhesion compared to glass (P < 0.05). Dentalon had the lowest fluorescence intensity among the provisional fixed prosthodontic materials.
  
  
  CONCLUSIONS
  The quantity of bacterial adhesion and surface roughness differed among the assessed provisional fixed prosthodontic materials. The light-polymerized provisional material Revotek LC had rougher surface and more bacterial adhesion compared with the others.
authors: Assistant Professor, Department of Prosthetic Dentistry, School of Dentistry, Erciyes University, Kayseri, Turkey.
authors: Mustafa
authors: M
authors: Zortuk
authors: Servet
authors: S
authors: Kesim
authors: Esma
authors: E
authors: Kaya
authors: Hatice
authors: H
authors: Ozbilge
authors: Kerem
authors: K
authors: Kiliç
authors: Ozlem
authors: O
authors: Cölgeçen