Initial bond strengths on resin-metal bonding for intra-oral applications are quite good, however bond strengths decrease with time and fail in wet environments and or thermocycling. Little is understood about the basic chemical nature of this adhesive system. It is hypothesized that 1) resin-metal bonding exists due to surface wetting and bonding via co- monomer additions to the resin matrix, and 2) that degradation of resin- metal bonds with time in water is a result of acid-base driven reactions at the interphase causing a degradation in the metal surface oxide. The proposed research will illucidate the existing chemical bonding existing at the resin-metal interface, or more appropriate interphase through various surface analytical techniques, some well established and some new. The long term goal will be to accurately predict the behavior of proposed adhesive systems, as well as the ability to custom design adhesives and adhesive systems. The application for this will be superior intraoral tooth-metal bonding applicable to orthodontic brackets and auxiliaries, intracoronal restorations, crowns, bridges, splint, as well as other biomechanical applications including prosthetic joint replacements.

Agency
National Institute of Health (NIH)
Institute
National Institute of Dental & Craniofacial Research (NIDCR)
Type
Unknown (K15)
Project #
5K15DE000343-05
Application #
2634124
Study Section
NIDCR Special Grants Review Committee (DSR)
Project Start
1994-01-01
Project End
1999-12-31
Budget Start
1998-01-01
Budget End
1999-12-31
Support Year
5
Fiscal Year
1998
Total Cost
Indirect Cost
Name
University of Maryland Baltimore
Department
Dentistry
Type
Schools of Dentistry
DUNS #
003255213
City
Baltimore
State
MD
Country
United States
Zip Code
21201