Evaluation of the shear bond strength of Korean flowable resin composites to dentin

Park, So-Young; Jih, Myeong-Kwan; Lee, Nan-Young; Park, Tae-Young; Jeong, Seo-Rin

doi:2025.63.9.283

J Korean Dent Assoc > Volume 63(9); 2025 > Article

Original Article

Journal of Korean Dental Association 2025;63(9):283-289.
DOI: https://doi.org/10.22974/jkda.2025.63.9.001 Published online September 30, 2025.

국산 유동성 복합 레진의 상아질 전단결합강도 평가

Evaluation of the shear bond strength of Korean flowable resin composites to dentin

So-Young Park¹

¹Department of Pediatric Dentistry, School of Dentistry, Chosun University, Gwangju, Korea
²Department of Conservative Dentistry, School of Dentistry, Chosun University, Gwangju, Korea
³Department of Orthodontics, School of Dentistry, Chosun University, Gwangju, Korea

Correspondence: Myeong-Kwan Jih, Tel: +82-62-220-3868,
Email: mdenti@chosun.ac.kr

Received: 29 July 2025 • Revised: 12 August 2025 • Accepted: 8 September 2025

Abstract

Purpose
This study aimed to compare the shear bond strength of two Korean flowable resin composites (Shoot Flow Pack, EsFlow) and two imported flowable resin composites (Filtek Supreme Flowable Restorative, G-aenial Flo X) to dentin using Adper Single Bond 2 adhesive.
Materials and Methods
Forty extracted premolars were prepared, and four types of flowable resin composites were bonded to dentin surfaces using teflon molds. Shear bond strength was measured using an universal testing machine after 24-hour storage in water at 37℃, and fracture surfaces were evaluated with a scanning electron microscope.
Results
Mean shear bond strengths were Shoot Flow Pack (12.68 MPa), EsFlow (12.00 MPa), Filtek Supreme Flow-able Restorative (15.29 MPa), and G-aenial Flo X (21.19 MPa). G-aenial Flo X showed significantly higher shear bond strength compared to the other three resin composites, which showed no significant differences among them.
Conclusion
Korean flowable resin composites showed comparable shear bond strengths to some imported resin composites, although G-aenial Flo X exhibited significantly higher shear bond strength. Further studies are need-ed to evaluate the clinical applicability of Korean resin composites.

Key Words: Composite Resins; Dental Bonding; Dentin