journal article·2023-03-25Open access

Tensile and shear bond strengths of a stainless steel used in orthodontic brackets bonded to bovine enamel using two types of resin cement

Keiko FUKAZAWA, Tomofumi SAWADA, Yukinori KUWAJIMA, Kaori SASAKI, Kazuro SATOH, Shinji TAKEMOTO

Dental Materials Journal· Volume 42· Issue 2

Abstract

The purpose of this study was to examine the relationship between the bond strength of stainless steel with two types of resin cements (MMA- and composite-based) on bovine enamel depending on the directionality of the applied force. The specimens were either placed in water or subjected to thermal cycles (TC), and the shear or tensile bond strengths (SBS or TBS) were determined. The SBS showed significantly greater than the TBS for both types of cement, and the SBS and TBS for composite-based cement had larger than MMA-based one. No significant difference in SBS was observed in the cements even after being subjected to TC. Cohesive failures of the cement and bovine enamel in the composite-based group, while adhesive failures were observed in MMA-based one. Consequently, the direction of the force at both cements affected the retention of stainless steel, and MMA-based cement was preferred when prioritizing less enamel damages.
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Research context

OpenAlex topics: Dental materials and restorations · Dental Erosion and Treatment · Orthodontics and Dentofacial Orthopedics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Division of Orthodontic, Department of Developmental Oral Health Science, School of Dentistry, Iwate Medical University

Department of Biomedical Engineering, Iwate Medical University

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