Survival of resin infiltrated ceramics under influence of fatigue

Dental Materials : Official Publication of the Academy of Dental Materials
Moustafa N Aboushelib, Mohamed H Elsafi

Abstract

to evaluate influence of cyclic fatigue on two resin infiltrated ceramics and three all-ceramic crowns manufactured using CAD/CAM technology. CAD/CAM anatomically shaped crowns were manufactured using two resin infiltrated ceramics (Lava Ultimate and Vita Enamic), two reinforced glass ceramic milling blocks ((IPS)Empress CAD and (IPS)e.max CAD) and a veneered zirconia core ((IPS)Zir CAD). (IPS)e.max CAD and (IPS)Zir CAD were milled into 0.5mm thick anatomically shaped core structure which received standardized press-on veneer ceramic. The manufactured crowns were cemented on standardized resin dies using a resin adhesive (Panavia F2.0). Initial fracture strength of half of the specimens was calculated using one cycle load to failure in a universal testing machine. The remaining crowns were subjected to 3.7 million chewing cycles (load range 50-200N at 3s interval) in a custom made pneumatic fatigue tester. Survival statistics were calculated and Weibull modulus was measured from fitted load-cycle-failure diagrams. Scanning electron microscopy was performed to fractographically analyze fractured surfaces. Data were analyzed using two way analysis of variance and Bonferroni post hoc tests (α=0.05). Dynamic fatigue resulted in sig...Continue Reading

References

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Citations

Oct 23, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Haifa El ZhawiYu Zhang
Oct 23, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Nathaniel C LawsonJohn O Burgess
Mar 6, 2018·The Journal of Advanced Prosthodontics·Ferhan EgilmezLippo Veli Juhana Lassila
Oct 4, 2020·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Elizabeth GriffisTaiseer A Sulaiman
Sep 18, 2020·Journal of Prosthodontic Research·Yasmin ElashmawyMoustafa Aboushelib
Feb 6, 2018·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Júlia Cadorim FacendaPedro Henrique Corazza
Oct 3, 2020·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Burcu Günal AbduljalilÖzay Önöral

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