Fracture strength of CAD/CAM composite and composite-ceramic occlusal veneers

Abstract

Under the conditions of this study, the maximal loads at fracture for these "non-ceramic" occlusal veneer restorations were found to be higher than human masticatory forces. Occlusal veneers made from the two materials tested are likely to survive occlusal forces regardless of restoration thickness, with those fabricated from the composite-ceramic hybrid material being more likely to survive heavier loads.

Fracture strength, failure type and Weibull characteristics of lithium disilicate and multiphase resin composite endocrowns under axial and lateral forces

“…The results obtained in this study were within the same range as occlusal veneers made from the same materials in another study [13]. failure types in the material after axial loading could be repaired using resin composites after appropriate conditioning of the LI or LA material [26,27].…”

“…Limited information is available to date on their durability but they presented promising results for occlusal onlays [13]. The present study aims to expand the current knowledge on structural durability of endocrowns.…”

“…Recently, multiphase resin composite materials have been advocated as an alternative to reinforced ceramics since they have more biomimetic properties with similar elasticity modulus closer to tooth structure. Limited information is available to date on their durability but they presented promising results for occlusal onlays [13]. The present study aims to expand the current knowledge on structural durability of endocrowns.…”

Bonding effectiveness of self-adhesive and conventional-type adhesive resin cements to CAD/CAM resin blocks. Part 2: Effect of ultrasonic and acid cleaning

“…All specimens were silanized after ultrasonic and/or acid cleaning. 3 Resin cement increments were built up and light cured for 20 s. 4 Each specimen was stored in 37°C distilled water for 24 h. 5 Each specimen was then cut into approximately 0.5 mm 2 beams. 6 µTBSs of 24 beams per group were measured immediately after cutting into beams.…”

“…This technology was first successfully established for milling ceramic materials and, today, numerous other materials have been introduced as a more economical alternative to dental ceramic restorations 1) . For example, composite resin inlays, onlays, veneers and crowns can be constructed by CAD/CAM techniques using prefabricated composite resin blocks 2) and are claimed to have the advantages of easier finishing and polishing, kindness to the natural dentition with regard to wear, easier add-on adjustment and lower cost compared to restorations milled from CAD/CAM ceramic blocks [3][4][5] . In addition, restorations from CAD/CAM resin blocks are naturally more esthetic than those fabricated using dental alloy.…”