Effect of fatigue loading on the fracture strength and failure mode of lithium disilicate and zirconia implant abutments

Abstract

Within the limitations of this study, it could be concluded that lithium disilicate abutments and hybrid-abutment-crowns show promising durability and strength after long-term dynamic loading. The use of titanium base enhances the strength of the zirconia abutments.

Mechanical behavior of posterior all‐ceramic hybrid‐abutment‐crowns versus hybrid‐abutments with separate crowns—A laboratory study

“…High translucency of lithium disilicate ceramic (Harada et al, ) and good mechanical properties (Li, Guo, Wang, Zhang, & He, ) introduced the possibility of using lithium disilicate with titanium bases as abutments. Few studies have investigated the use of lithium disilicate as an abutment material (Elsayed, Wille, Al‐Akhali, & Kern, ; Elsayed et al, ; Guilherme, Chung, et al, ; Protopapadaki, Monaco, Kim, & Davis, ).…”

“…Titanium bases were therefore introduced to combine the benefits of having a titanium-to-titanium connection while providing an esthetic abutment. Several laboratory studies reported that zirconia abutments with titanium bases had higher fracture resistance (Alsahhaf, Spies, Vach, & Kohal, 2017;Elsayed, Wille, Al-Akhali, & Kern, 2018;Gehrke, Johannson, Fischer, Stawarczyk, & Beuer, 2015;Guilherme, Chung, Flinn, Zheng, & Raigrodski, 2016;Rosentritt, Rembs, Behr, Hahnel, & Preis, 2015;Sailer, Sailer, Stawarczyk, Jung, & Hämmerle, 2009). Bonding titanium bases to hybrid-abutments requires an appropriate surface treatment of each bonding surface (Ebert, Hedderich, & Kern, 2007;Gehrke, Alius, Fischer, Erdelt, & Beuer, 2014;Guilherme, Wadhwani, Zheng, & Chung, 2016;Mehl, Zhang, Lehmann, & Kern, 2018).…”

“…Theses designs are usually chosen according to the clinicians' and patients' preferences and the clinical situation. Only few studies evaluated the difference between hybrid-abutment-crowns and hybrid-abutments with separate crowns (Elsayed et al, 2017(Elsayed et al, , 2018Hussien et al, 2016;Roberts, Bailey, Ashcraft-Olmscheid, & Vandewalle, 2018). Initial laboratory investigations and systematic reviews demonstrated promising results for monolithic crowns on prefabricated titanium bases (Conejo, Kobayashi, Anadioti, & Blatz, 2017;Joda, Bürki, Bethge, Brägger, & Zysset, 2015;Priest, 2017).…”

Influence of crown and hybrid abutment ceramic materials on the stress distribution of implant-supported prosthesis

“…The proposal of using an hybrid abutment is very interesting so that unitary crowns with a great ceramic volume would have similar aesthetic characteristics to the adjunctive teeth, which is not always possible with conventional abutments 5,6 . Hybrid abutment are suggested to present mechanical properties similar to titanium abutments 4,7,8 and promising durability and strength after long-term 9 .…”

Resistência à tração entre componentes de pilar híbrido Conexão® submetido a teste de fadiga termomecânica

“…Sendo assim, podemos propor que, nas amostras que compõem G2, por terem sido expostas ao dobro de ciclos termomecânicos, o fenômeno da transformação de fase possa ter sido mais expressivo, de modo a compensar a perda de adaptação que houve entre os componentes de titânio e zircônia devido ao desgaste do hexágono do titânio, por meio de um aumento de volume do componente de zircônia. À respeito do número de ciclos mecânicos, muitos trabalhos apresentam um protocolo de aplicação de 1 200 000 ciclos para verificar as possíveis intercorrências nas propriedades físicas dos materiais como diminuição de resistência à fratura, propagação de trincas, entre outros(ELSAYED, A. et al, 2018;OBERMEIER, M. et al, 2017; ALSAHHAF, A. ROSENTRITT, M. et al, 2014;NOTHDURF, F. P. et al,…”