Relationship between internal accuracy and load-bearing capacity of minimally invasive lithium disilicate occlusal veneers

Mörikofer, Nina; Benić, G I; Park, J M; Özcan, Mutlu; Hüsler, Jürg; Ioannidis, Alexandros S

doi:10.5167/uzh-203396

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Mörikofer, N., Benić, G. I., Park, J. M., Özcan, M., Hüsler, J., & Ioannidis, A. S. (2021). Relationship between internal accuracy and load-bearing capacity of minimally invasive lithium disilicate occlusal veneers. International Journal of Prosthodontics, 34(4), 365–372. https://doi.org/10.11607/ijp.6735

Abstract

Purpose: To test whether internal accuracy affects the load-bearing capacity of 0.5-mm-thick occlusal veneers made out of milled or heat-pressed lithium disilicate (LS2).

Materials and methods: Extracted human molars (N = 80) were divided into four groups (n = 20 each) depending on the bonding substrate (enamel [E] or dentin [D]) and the fabrication method (milling [CAD] or heat pressing [PRE]) for the occlusal LS2 veneers: (1) E-CAD, (2) D-CAD, (3) E-PRE, or (4) D-PRE. After restoration fabrication, the abutment teeth and the corres