Speaker: Prof. Daniel Rittel - Faculty of Mechanical Engineering, Technion, Haifa, Israel
More info about Professor Rittel: https://rittel.net.technion.ac.il
Abstract: Dentistry is predominantly a clinical scientific field in which most of the knowledge is acquired through in-vivo, and to a lesser extent in-vitro experimentation.
With that, not every piece of information is easily accessible, all the more so when inherent experimental control and repeatability may be an issue.
One can also consider the bone-implant system from an engineering mechanics point of view, albeit implying definite simplifications, but at the same time exploring well-controlled (boundary) conditions, thereby performing numerical experiments.
The purpose of this presentation is to show results obtained in our group, by means of finite element simulations, of what we consider to be mechanical issues in implant dentistry. The idea is to develop a preliminary simulation tool that can and will be enriched at later stages through the introduction of biologically-coupled formulation to get one step closer to the clinical realm. More generally, the intent is to raise the awareness of the Clinical community to the benefits of the collaboration with the Engineering one.
In the presentation we will briefly address the following points:
– Implant design from a mechanical standpoint. The concept of admissible loads for any loading angle, namely the “failure envelope”.
– A brief look at stress-shielding for dental implants.
– What can be learned from insertion and extraction torque and pullout tests regarding implant stability with emphasis on variable degrees of osseointegration.
– Resonant frequency analysis: What is really measured and what is the sensitivity of the method.
– Quantitative ultrasound evaluation of the bone-implant interface. A viable alternative/complementary tool?
– Finally, we will discuss results pertaining to the evolution of the bone stress with the progression of bone recession with peri-implantitis, as a first step to a future evaluation of the mechano-biological potential synergy involved in that pathology