Cuspal deflection during polymerisation of composite lutes of ceramic inlays

Influence of several fibre‐reinforced composite restoration techniques on cusp movement and fracture strength of molar teeth

“…Several methods have been used previously to measure cusp deflection/movement, including photography (Segura & Donly 1993), microscopy (Suliman et al 1994), strain gauges (McCullock & Smith 1986), interferometers (Suliman et al 2003), linear variable differential transformers (Meredith & Setchell 1997) and a novel non-contact technique (Martin et al 1999). In this laboratory study, a 3D topographical measurement system was used.…”

Delayed Photo-activation Effects on Mechanical Properties of Dual Cured Resin Cements and Finite Element Analysis of Shrinkage Stresses in Teeth Restored With Ceramic Inlays

“…Stress concentrations at this thin ceramic margin have been associated with formation of microcracks in ceramic restorations. 30,31 This study found residual shrinkage stress concentrations in the margins of the ceramic restoration, which may add an additional challenge to this vulnerable area. Avoiding or reducing shrinkage stresses at the margins could therefore increase the longevity of ceramic restorations.…”

Conventional and adhesive luting cements

“…As the E increases and interlocking of the surrounding walls keeps the material attached, internal stress will develop perpendicularly [4,10,16] and parallel [32,38,39] to the interfaces, which may finally impair the material's integrity and/or its attachment to the walls. This perpendicular stress can be mitigated at the moment -without disrupting the bond -by tooth or prosthesis deformation [4,41] or internal porosity of the luting material. Internal porosity [43] would act as a stress reliever, as it adds an evenly distributed, internally nonadhered surface [2].…”