Effect of 8-methacryloxyoctyl trimethoxy silane concentration on the bonding performance and durability to zirconia.

Authors

Haruto Hiraba, Hiroyasu Koizumi, Shoko Miura, Sufyan Garoushi, Takayuki Yoneyama, Lippo Lassila

Published in

Dental materials journal. Sep 02, 2026. Epub Sep 02, 2026.

Abstract

This study evaluated the bonding performance and durability of a novel long-chain silane, 8-methacryloxyoctyl trimethoxysilane (8-MOTS), on zirconia surfaces. Specimens were treated with varying concentrations of 8-MOTS (0.1-4.0%) and compared with 3-(trimethoxysilyl)propyl methacrylate (3-TMSPMA) and a commercial silane primer. All zirconia surfaces underwent airborne-particle abrasion with alumina to simulate a clinically common surface treatment. Shear bond strength (SBS) was assessed after water storage (37ºC, 24 h) or boiling (100ºC, 16 h) as a severe hydrothermal screening method. The most favorable bonding performance was observed with 8-MOTS at 1.0% and 1.5%, maintaining SBS values ≥20 MPa after boiling. Failure-mode analysis and scanning electron microscopy indicated greater luting-agent retention and more combined failures in high-performing groups. Within the present alumina-abrasion and MDP-containing bonding protocol, 8-MOTS at 1.0-1.5% showed favorable durability.

PMID:
42686540
Bibliographic data and abstract were imported from PubMed on 03 Sep 2026.

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