Weak adhesion between ceramic and resin cement impairs the load-bearing capacity under fatigue of lithium disilicate glass-ceramic crowns

Post-fatigue fracture load, stress concentration and mechanical properties of feldspathic, leucite- and lithium disilicate-reinforced glass ceramics

“…Factors that can contribute to the fatigue of dental ceramics include the type and composition of the ceramic material, the design and preparation of the restoration, the fit and cementation of the restoration, and forces that the restoration is exposed to Refs. [ 10 , 20 , 32 , 33 , 34 ]. In addition, the presence of defects within ceramics can significantly decrease their fatigue survival, as these features act as stress concentration points that can initiate and propagate cracks [ 35 ].…”

“…Therefore, minimizing the presence of these features through careful manufacturing processes and material selection can improve the fatigue survival of ceramics. In this sense, fatigue cycling is a widely applied method in dental studies to simulate the long-term functional performance of dental restorations [ 34 ]. Subjecting the restorations to repeated cycles of loading and unloading, which simulates the biting and masticatory forces that they would be exposed to in the oral environment.…”

Advancements in Dental Care: The Evolving Landscape of Prosthetic Dentistry

“…It is not an easy task, as we already know. Sometimes the most suitable material in terms of mechanical response is not the most adequate for fatigue, stress concentration, and/or if considering the ion leakage over time as well as the possible adverse reactions [ 15 , 16 , 17 ].…”

“…It is not an easy task, as we already know. Sometimes the most suitable material in terms of mechanical response is not the most adequate for fatigue, stress concentration, and/or if considering the ion leakage over time as well as the possible adverse reactions [15][16][17]. In case a physical model is needed, the 3D printing can be performed chairside, using the building platform from the 3D printer software to position the models and create the required supports.…”

Effect of Repressing Lithium Disilicate Glass Ceramics on The Shear Bond Strength of Resin Cements

“…Adhesion of the ceramic crowns using resin cement was shown to enhance the fracture loads of the ceramic crowns [ 15 ]. Da Rosa et al [ 16 ] confirmed the critical role of resin cement chemical adhesion to lithium disilicate in the fatigue behavior of the crown. The authors reported an amplification in stress magnitudes in the crown and cement as a consequence of the gradual failure of the bond [ 16 ].…”