Seq #6 Wednesday, March 21, 2007
2:30 PM-4:00 PM Ernest N. Morial Convention Center 298, Symposium - Group/Division Sponsored
Status of Laboratory Studies for Predicting Clinical Behavior

Sponsored by: Dental Materials, Prosthodontics Research, ADA Standards Comm on Dental Products
Description: Dentistry’s long comfort with empirical science and personal experience is ending, in part as many ingrained concepts and treatments approaches are revealed as unsubstantiated. Although potential links between in vitro measured properties and clinical behavior are frequently implied, the status of such linkage is often obscure. In vitro data involving either physical property measurements or attempts to simulate intra-oral function have rarely been validated in predicting clinical behavior. The Council on Scientific Affairs of the American Dental Association (ADA) voted in January of 2004 to discontinue the ADA Seal Program for professional products and to move towards more clinical “performance-based” criteria by 2007. Against this backdrop, this symposium will highlight the development of in vitro tests that either (1) rank materials consistent with clinical findings or (2) mimic damage accumulation or failure mechanisms observed from clinical specimens. Perspectives will be offered on another issue relevant to both validated in vitro testing and the interpretation of clinical study data; that patients and dentists both contribute variables influencing the performance of materials. Factors such as technique sensitivity and patient diet have been demonstrated to be as significant as the materials studied clinically. Finally, an update will be provided on the ADA move away from sole reliance on traditional laboratory testing with the development of a new product evaluation program for professional products relying more heavily on clinical evaluation and laboratory tests validated as being clinically predictive.
Chairperson: J.R. KELLY
 
0006  2:30 PM Perspectives on dental materials literature as evidence and the status of ceramics testing
J.R. KELLY, University of Connecticut, Farmington, USA
  2:50 PM Dental Composites, Glass Ionomers and Resin-modified Glass Ionomers: Which tests are useful for predicting clinical performance in posterior applications?
J.L. FERRACANE, Oregon Health & Science University, Portland, USA
  3:10 PM A critical review of methods of testing adhesion to tooth tissue and their validation by trends from clinical studies.
B. VAN MEERBEEK, Catholic University of Leuven, Belgium
  3:30 PM Background and update on the emerging ADA evaluation program for professional products
C. STANFORD, University of Iowa, Iowa City, USA
  3:50 PM Discussion

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