| 1687 Influence of the Dentin Treatment in Adaptation of Prosthetic Retainers | ||
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W.D. LADALARDO1, L.A. PENNA2, and S.M. RODE2, 1Ibirapuera University, Taubaté University, Sao Paulo, Brazil, 2Ibirapuera University, Sao Paulo, Brazil Marginal leakage has been found to be the main cause of failure in prosthetic retainers due to the formation of secondary caries. Objectives: the purpose of this study was to evaluate the in vitro influence of the dentin treatment in the adaptation of metallic coppings on full crown preparations. Methods: fifteen human premolars from the tooth bank of the School of Dentistry of Ibirapuera University were prepared for full crown with chamfer endings. The teeth were divided in 3 groups: control (untreated), treated with 1,23% acidulated fluoride, treated with a bond system (hybridization). All specimens were impressed with Silon2 and metal coppings were made. The adaptation was analyzed by a profilographer and data was submitted to ANOVA and Tukey's tests. Results: The disadaptation average values were 343,60 ìm for control group, 271,20 ìm for the fluoride group and 163,50ìm for the hybridization group. Statistical differences were not found between the 3 groups. Conclusion: the use of a fluoride or a bond system did not change the marginal adaptation of the metallic coppings. | ||
| Seq #196 - Fixed Prosthodontic Research, Provisional, and Definitive Restorations 10:15 AM-11:30 AM, Friday, 12 March 2004 Hawaii Convention Center Exhibit Hall 1-2 | ||
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