Mechanical behavior of posterior all-ceramic hybrid-abutment-crowns vs hybrid-abutments with separate crowns: A laboratory study
Clinical Oral Implants Research Dec 13, 2018
Nouh I, et al. - Authors assessed the fatigue resistance, fracture resistance and mode of failure of posterior hybrid-abutment-crown vs hybrid-abutment with separate crown, both bonded to short titanium bases. They perpendicularly embedded 32 titanium implants in auto-polymerizing resin. Findings suggested failure of zirconia and lithium disilicate hybrid implant-supported restorations with short (3 mm) titanium bases in a considerable number already during chewing simulation. Hence, a critical consideration of their use in the posterior region despite their high fracture strength was suggested.
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