| 0877 Preliminary results of early bacterial colonization on feldspar-ceramics: SEM-analysis | ||
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S.M.B. PEREIRA1, A.S. BRENTEL2, K.Z. KANTORSKI2, L.F. VALANDRO2, C.A. PAVANELLI2, and M.A. BOTTINO2, 1Paulista State University, São José dos Campos, Brazil, 2Paulista State University, Sao Paulo, Brazil Objectives: to evaluate, in situ, the early bacterial colonization on feldspar-ceramics submitted to different glazing procedures. Methods:. Twelve standardized ceramic disks (diameter=5mm, thickness=1mm) of two feldspar-ceramics (VM7 and VM13, Vita Zahnfabrik) were produced. Six disks of each material were subjected to one of the following glazing procedures: normal glaze or glaze with Vita Akzent (Vita Zahnfabrik). Four disks of each experimental group were embedded in the buccal surface of intraoral splints, which were worn by six individuals with good oral health for eight hours. SEM analysis,was performed using a global area of 100x125µm in each specimen. This area was composed of five randomly selected fields (20x25µm). For each field the bacterial colonization was analyzed using the following criteria: presence (=1) or absence (=0). Values quoted for the global area were cumulative of those observed in the fields. Kruskal-Wallis ANOVA exact test was used to compare the early bacterial colonization among groups. Results: There was no difference between both feldspar ceramics and between the glazing procedures (P=0.4030). Conclusion: The type of feldspar-ceramic, and the glazing procedure have no effect on early bacterial colonization. | ||
| Seq #107 - Ceramics: Mechanical Properties and Marginal Fit 3:30 PM-4:45 PM, Thursday, March 22, 2007 Ernest N. Morial Convention Center Exhibit Hall I2-J | ||
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