TDB
Important Dates

Prof. Dr. Füsun Özer

Current Concepts on Adhesion to Dental Hard Tissues and New Generation Ceramic Surfaces
Adhesion is defined as a molecular attraction between two surfaces promoted by the interfacial forces of attraction from different molecules. The force of attraction actually causes two different substances to join by physical, mechanical and chemical means of bonding. A durable adhesion to tooth substrate and material surfaces is critical for clinical long-term success for direct and indirect restorations. Adhesion to tooth substrate is based on an exchange process in which inorganic tooth material is replaced by synthetic resin. This process involves two phases: one phase consists of removal of calcium phosphates, by which microporosities are exposed in both enamel and dentin surfaces; the other, so-called hybridization phase, involves infiltration and subsequent in situ polymerization of resin within these microporosities. The result is a micromechanical interlocking of the resin with the tooth structure. However, adhesion strategies with current adhesive bonding agents can be classified according to the number and combination of treatment steps of tooth surfaces such as; etch-and-rinse or self-etch concepts in multi-bottle or one-bottle formulas.
Technological advances in adhesive dentistry and dental ceramic materials have enabled indirect restorations that use a minimally invasive approach, provide excellent mechanical properties, and produce satisfactory esthetic results. Ceramics in dentistry can be generally classified into “oxide ceramics” and “glass ceramics” based on the chemical composition. Therefore, the morphology and chemical properties of the ceramic surface are very important factors for the effective ceramic-resin bond. The clinical success of a ceramic restoration is strongly dependent on the quality and durability of the bond between the intaglio surface of restoration and resin luting agent. The quality of this bond depends upon the bonding mechanisms that are controlled in part by the surface treatment which requires roughening and cleaning for adequate surface activation and furthermore promoting micromechanical and/or chemical bond to the substrate. Micromechanical bonding can be created by acid etching and/or sandblasting, whilst a silane coupling agent provides a chemical bond with the ceramic surface.
The purpose of this presentation is to give some information about current concepts on adhesion to dental hard tissues and ceramic surfaces.

 

Dr. Fusun Ozer graduated from Marmara University Faculty of Dentistry in 1982. From 1984 to 1987, she worked as a research assistant at the University of Colorado School of Dentistry. She completed her doctorate degree on Operative Dentistry in 1991 and started working at Selcuk University Faculty of Dentistry as an Assistant Professor. Dr. Ozer was promoted to Associate Professor in 1995; and to Full Professor in 2000 at Selcuk University. She served as a chair for the Department of Operative Dentistry until 2008. She also served as Vice Dean of the school from 1994 to 2001. She started working as a faculty member at the University of Pennsylvania (UPENN) School of Dental Medicine in 2008 and still works as a professor in the Department of Restorative Dentistry. In 2013, Dr. Ozer received her dental diploma and license from the university to practice dentistry in USA and started working as an Assistant Dean for the Clinical Affairs. She currently works as the director of Clinical Operative Dentistry Course in the Department of Restorative Dentistry. Dr. Fusun Ozer has a wide range of knowledge and publications in adhesive dental materials and cariology with 170 published papers and 20 research awards from USA. Dr. Ozer continues to serve as a reviewer for several dental journals and works in several committees of the university and scientific organizations. She is married and has one child