Shear bond strength of zirconia orthodontic brackets depending on surface pretreatment of bonding base.

ABSTRACT: This study evaluated the shear bond strength (SBS) of zirconia orthodontic brackets under different surface pretreatment protocols to identify an optimal bonding strategy for clinical applications. Zirconia brackets (n = 94) were fabricated using 3 mol% yttria-stabilized zirconia powder and a ceramic injection molding technique. The bracket base was treated using one of the following: no treatment (Control), traditional alumina sandblasting (Group I), traditional alumina sandblasting with a 10-MDP-based primer (Group II), or silica-modified alumina sandblasting with a silane primer (Group III). Each group was divided into non-thermocycled and thermocycled subgroups. Brackets were bonded to the bovine enamel, and SBS was measured (10 brackets/subgroup). The failure mode was assessed using t

SUBMITTER: Kim H 

PROVIDER: S-EPMC12583762 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature