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Oper Dent. 2011 Jul-Aug;36(4):413-21. doi: 10.2341/10-383-L. Epub 2011 Aug 5.

Bonding nano-filled resin-modified glass ionomer to dentin using different self-etch adhesives.

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  • 1Ain Shams University, Operative Dentistry Department, Cairo, Egypt.



To investigate the shear bond strength of the nano-filled resin-modified glass ionomer (RMGI) to dentin using different self-etch adhesives.


Two resin-based restorative materials, a nano-filled RMGI (Ketac Nano-100, 3M ESPE) and a restorative composite (Grandio, VOCO) were bonded to bovine dentin using four self-etch adhesives (Futurabond M, VOCO; Adper Easy Bond, 3M ESPE; G Bond, GC Corp; and One Coat, Coltène). One hundred bovine anterior teeth were used in this study. Subsequent to labial enamel removal, each adhesive was applied according to manufacturer instructions. Fifty teeth were restored with the nano-filled RMGI and the other 50 were restored with the resin composite. Cylinders of 3×2 mm from the two restorative materials were bonded to dentin, and the specimens were stored in distilled water for 24 hours. Shear bond strength testing was performed in a universal testing machine at a crosshead speed of 0.5 mm/min. Two randomly selected specimens from each group were chosen for evaluation by scanning electron microscopy (SEM). Failure modes were evaluated using the stereomicroscope. All data for shear bond strength in MPa were expressed as mean ± standard deviation (SD). Statistical analysis was carried out using SAS program (SAS, 1988).


Two-way analysis of variance revealed that the adhesives, the restorative materials, and their interactions (adhesives and restorative materials) had a significant effect on the shear bond strength to bovine dentin.


Self-etch adhesives used in this study can adequately bond the nano-filled RMGI to dentin.

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