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Aspects of the Physico-chemical-mechanical Properties When Bonding to Zirconia



2021 IADR/AADR/CADR General Session

The 99th General Session & Exhibition of the IADR was to be held in conjunction with the 50th Annual Meeting of the American Association for Dental Research and the 45th Annual Meeting of the Canadian Association for Dental Research, from July 21-24, 2021 as a Virtual Experience.

The recordings in this library from the meeting are a selection of the science that was to be presented as part of the General Session. These recordings give you the opportunity to participate in the meeting and hear from leading researchers. The recordings include IADR Distinguished Lecture Series speakers, the IADR Academy and symposia from a collection of scientific groups and networks.

This session can be purchased as part of the full meeting recordings within the product bundles





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Session Description 
The aim of this session proposal is to present the cutting-edge of science information on how each aspect of bonding to zirconia can influence longevity of zirconia restorations, clinical outcomes, and some new trends on the application of this material. Zirconia has been extensively used in manufacturing single crowns and/or 3-unit fixed partial dentures and recent clinical trials explored the fabrication of onlays/inlays and veneers, where bonding, rather than cementing, gain more importance. Nonetheless, bonding zirconia to resin cements is still a challenge due to the inert nature of the microstructure of this polycrystalline material. Zirconia microstructure is not susceptible to most acids with the exception of strong hazardous acids. The difficulties associated with roughening the zirconia surface to promote zirconia-resin cement micro-mechanical interlocking have been extensively explored in the literature. Moreover, inducing surface modifications can cause crystalline changes and accelerate hydrothermal and fatigue degradation. Therefore, novel and alternative techniques have been proposed. The use of ultrashort-pulse laser as one of those techniques was recently reported in the literature, and promising results were identified with increased roughness, wettability, and superior bond strength. In addition to the ultrashort laser techniques, chemical bonding has been exploited to enhance the quality of adhesive cementation and appropriate bond to zirconia. In short, the literature presented clarification on use of silanes and 10-methacryloxydecyl dihydrogen phosphate (MDP) as a determinant of the physico-chemical properties of the coating and the appropriateness of utilizing acid monomers MDP-content to bond.

Learning Objectives
  • Describe and discuss important aspects related to physico-chemical-mechanical characteristics of zirconia.
  • Identify and compare different bonding techniques that can be employed to bond zirconia.
  • Categorize procedures on how to manage zirconia bonding to the tooth structure.
Presentation Date
July 22, 2021

Presenters
Grace De Souza - Physico-Mechanical Characteristics of Zirconia–Novel Procedures to Enhance Surface Roughness
Paulo Cesar - Current Dental Zirconia Microstructure, Optical, and Mechanical Properties
Hanin Hammoudeh - Clinical Aspects of Bonding Procedures to Zirconia
Markus Blatz - Importance of Chemical Aspects When Clinically Bonding to Zirconia

Sponsoring Groups/Networks
Dental Materials, Prosthodontics Research

CE Credits
1.5 Contact Hours

Financial Interest Disclosure:
NONE

Not eligible for individual purchase must purchase as part of a meeting bundle.