ArticleBMC oral health2026
Effect of Angulated Screw Channel (ASC) design on the fracture resistance of implant-supported monolithic zirconia and lithium disilicate crowns: an in vitro study.
Article in BMC oral health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Ti-base abutments with angulated screw channel (ASC) designs have been developed to address the esthetic challenges associated with labial screw access in anterior implant-supported single crowns, as well as the ergonomic limitations caused by restricted mouth opening in posterior crowns. Despite their increasing clinical use, there is limited research evaluating the impact of this design on the fracture resistance of various monolithic restorative materials across different anatomical regions, particularly after aging. This study aims to investigate the effect of angled screw channel design on the fracture resistance of implant-supported single crown restorations made of different materials in different anatomical regions after long-term thermal aging. In the study, a total of 80 implant-supported single crown restorations were prepared and then divided into subgroups (n = 10) considering anatomical region (anterior/posterior), restoration material (monolithic zirconia/lithium disilicate), and screw channel design (straight 0
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