Influence of specimens ’ geometry and materials on the thermal stresses in dental restorative materials during thermal cycling

Conclusions Maximum absolute stress values were found to vary between 2–4MPa, which might not be critical even for ceramics. During multi-cycle testing these stresses would cause different fatigue in various locations. The zirconia-based specimens and zirconia-based restoration (crown) exhibited the most similar stress states. Thus it might be recommended to use these geometries for fast screening of the materials for this type of restorations.

Source: Journal of Dentistry - October 10, 2017 Category: Dentistry Source Type: research