Effect of preparation design and endodontic access on fracture resistance of zirconia overlays in mandibular molars: An in vitro study
Carlos A. Jurado,
Kelvin I. Afrashtehfar,
Manuel Robles
et al.
Abstract:PurposeTo evaluate the fracture resistance of zirconia overlays, considering various preparation designs and the presence of endodontic access.Materials and MethodsNinety translucent zirconia (5Y‐PSZ) overlay restorations were divided into six groups (n = 15/group) based on different preparation designs, with and without endodontic access: chamfer margin 4 mm above the gingival level without (group 1) and with endodontic access (group 2); margin 2 mm above the gingival level without (group 3) and with endodont… Show more
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