Immediate dentin bond strength of flowable glass ionomer– based liner materials without surface pretreatment
Quintessence International, cilt.57, sa.8, ss.622-628, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 57 Sayı: 8
- Basım Tarihi: 2026
- Doi Numarası: 10.3290/j.qi.b7041750
- Dergi Adı: Quintessence International
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CINAHL, EMBASE, MEDLINE, DIALNET, Biomedical Reference Collection: Corporate Edition (EBSCO)
- Sayfa Sayıları: ss.622-628
- Anahtar Kelimeler: dentin, glass ionomer, in vitro study, liner material, shear bond strength
- Lokman Hekim Üniversitesi Adresli: Evet
Özet
Objectives: The aim of this in vitro study was to evaluate the dentin bond strength of different flowable glass ionomer– based liner materials without surface pretreatment. Method and materials: Twenty-one extracted human molars were randomly assigned to three groups (n = 7), each receiving a different material (Groups A to C). Mid-coronal dentin surfaces were prepared and standardized using silicon carbide paper to create a uniform smear layer. Three flowable glass ionomer– based liner materials were applied without any surface pretreatment or adhesive system. Cylindrical specimens (2 mm diameter × 2 mm height) were light-cured according to the manufacturers’ instructions. After 24 hours of storage at 37°C and 100% humidity, shear bond strength was measured using a universal testing machine at a crosshead speed of 1 mm/min. Failure modes were evaluated under a stereomicroscope and scanning electron microscopy. Data were analyzed using the Kruskal-Wallis test (α = .05). Results: The mean ± SD bond strength values were 12.76 ± 5.5 MPa for Group A, 12.74 ± 6.6 MPa for Group B, and 19.25 ± 7.9 MPa for Group C. Although Group C showed numerically higher values, no statistically significant difference was found among the groups (P = .13). Adhesive and mixed failure modes were predominantly observed, whereas cohesive failures were rare. Conclusion: Within the limitations of this in vitro study, the evaluated flowable glass ionomer–based liner materials exhibited comparable immediate dentin bond strength under simplified application condi tions without surface pretreatment.