Date: 18 November 2022 | Time: 15:00-16:00 (GST) | Location: Online Event
Abstract
The restoration of root filled tooth is a key factor in the success of the endodontic treatment and the survival of the tooth. For the last 50 years, the development of adhesive materials and techniques has dramatically changed the biomechanical concepts of modern restorative dentistry by progressively aiming for minimally invasive restorations and therefore the preservation of more dental tissue. This paradigm shift has led to colossal research on the biomechanical properties of teeth, and numerous materials have been developed to minimise the stress concentration induced by restorations. This was achieved by adapting the modulus of elasticity of new restorations to that of the natural dental tissue. However, no ideal restoration has emerged from published clinical studies, and similarly, systematic reviews fail to define the superiority of one direct or indirect restoration compared to another. Consequently, dental practitioners still need to question biomechanical phenomena leading to failure. In research, in vitro models and more recently finite element models have been developed to increase our understanding of these mechanisms. Each decision-making on material choice or restoration type had a biomechanical impact, that is highly dependent on patient-specific parameters such as occlusion. After comparing the interests of several reference models, key biomechanical factors will be presented, that could help dental practitioners make the most adapted choice in each situation. In the last decades, the number of resin composites has largely increased and would lead to adapting again our treatments for an even more conservative approach. Compared to other materials, fiber-reinforced composites represent promising candidates thanks to their exceptional biomechanical properties and the possibility to restore damages.
Lecture Objectives
- Understand the role of restoration and biomechanics in the success of endodontic treatment
- Learn key principles of the biomechanics of the root-filled tooth
- Define the interest of fiber reinforced composites compared to other restorations
