Spatially resolved assessments of composite shrinkage in MOD restorations using a digital-image-correlation technique

Microcomputed Tomography Evaluation of Volumetric Shrinkage of Bulk‐Fill Composites in Class II Cavities

“…Composite resins with high elastic modulus produce more rigid restorations, which increase the effect of polymerization contraction on residual shrinkage stresses . Restorative materials with low elastic modulus may reduce shrinkage stresses but must present mechanical properties to sufficiently recover the structural integrity of the original tooth and support masticatory loads …”

Bulk fill restoratives: To cap or not to cap – That is the question?

“…Additionally, horizontal incremental restoration placement for the bulk fill flowable bases or bulk fill resin restoratives involved the restorative materials being placed in contact with both the buccal and palatal cusps simultaneously which introduces constraints during light irradiation which limits the overall mean deflection. [43][44][45] This was in contrast to the oblique incremental restoration technique where one cusp was only in contact with the resin restorative and thereby promoted cuspal deflection. 9,22 To further examine why increased mean total cuspal deflection values were noted for restoration protocol 2 compared with restoration protocol 3 ( p < 0.0001), a similar argument can be made for the occlusal 'capping' increments.…”

“…17 Therefore, mean total cuspal deflection values for oblique incremental restoration of the occlusal 'capping' RBC increments would be expected to be significantly higher compared with placing the occlusal resin restorative as a single large horizontal increment. [43][44][45] The cervical microleakage assessment of restoration protocols 2 and 3 included an ageing component, namely thermocycling for 500 cycles which was recommended by ISO technical specification no. 11405, 25,26 thereby providing a meaningful clinical context to the cervical microleakage study.…”

Effect of Different Liners on Fracture Resistance of Premolars Restored with Conventional and Short Fiber‐Reinforced Composite Resins

“…Therefore, the former may negate any beneficial effect of the latter on fracture resistance. Chuang et al reported a higher shrinkage cuspal displacement for flowable liner group, compared to no liner and RMGI liner groups …”