| Seq #20 | Thursday, 9 March 2006 | |||||||||||||||||||||||
| 9:00 AM-10:30 AM Dolphin Hotel Oceanic 1, Symposium - Group/Division Sponsored | ||||||||||||||||||||||||
| [AADR] Marginal Quality of Restorations | ||||||||||||||||||||||||
Sponsored by: Dental Materials | ||||||||||||||||||||||||
| Description: There remains a lot of concern about the impaired marginal quality of both direct and indirect restorations as being a contributing factor for post-operative hypersensitivity, marginal discoloration, secondary caries and even pulpitis. The most common laboratory evaluation methods include using the SEM to examine the marginal seal of fillings or restorations placed in extracted teeth, measuring the penetration of dyes or other substances into the tooth/restorative interface after sectioning, and measuring the dentinal fluid transport through restored teeth. Measurable material properties that may influence the marginal seal are the bond strength to the tooth substance, shrinkage and shrinkage stress, and the degradation or solubility of the materials in special media. All of these methods or properties, however, are lacking in terms of scientific proof that the in vitro data predict the outcome of clinical studies. Furthermore, there are no acceptance levels for those laboratory tests that are evidence-based. The goal of this symposium is to summarize the existing scientific evidence with regard to the etiology of clinical events that may be related to the marginal quality of dental restorations, and to compare the available methods for evaluating the margins of restorative materials in the laboratory and to elucidate their clinical relevance. This symposium is targeted to all oral health care providers and researchers. This program is financially supported by Ivoclar Vivadent | ||||||||||||||||||||||||
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Back to the ADEA/AADR/CADR Meeting & Exhibition (March 8-11, 2006)