Purpose: To assess the microtensile bond strengths of a core composite with two different viscosities, MultiCore Flow (F) and Heavy Body (HB) (Ivoclar-Vivadent), on dentin and glass-fiber posts with methacrylate resin matrices, in combination with three dentin adhesives: Syntac Classic (S), Excite DSC (E), and AdheSE (A) (Ivoclar-Vivadent). The omission of an intermediate adhesive coating on silanized posts was also examined to see if this resulted in post-core bond strength reduction. Materials and Methods: Six experimental dentin and 6 experimental post groups were formed with different core material viscosity/adhesive combinations. In two control post groups, no adhesive was applied on the silanized posts. The core material was stratified on deep dentin or on the posts. From the built-up teeth and the post-core units, microtensile sticks were obtained. Results: The bond strengths measured on dentin were (MPa): S-F 12.7 +/- 6.4; S-HB 18.3 +/- 7.6; E-F 33.1 +/- 13.7; E-HB 34.1 +/- 10.2; A-F 33.5 +/- 14.8; A-HB 35.5 +/- 14.4. The post-core strengths were: S-F 9.4 +/- 2.5; S-HB 7.1 +/- 3.8; E-F 8.6 +/- 3.8; E-HB 8.1 +/- 4.4; A-F 8.1 +/- 2.7; A-HB 8.3 +/- 2.4; no adhesive-F 10.4 +/- 3.6; no adhesive-HB 6.3 +/- 2.7. Significantly higher interfacial strengths were achieved on dentin than on posts (p<0.05). Adhesive type significantly affected core-dentin adhesion, with Excite DSC and AdheSE outperforming Syntac Classic (p<0.05). Neither core material viscosity nor adhesive type significantly influenced post-core adhesion (p>0.05). Omission of an intermediate adhesive layer had no effect on post-core adhesion (p>0.05). Conclusions: Even after post surface silanization, the bond established by the composite core material with the post remains weaker than that created with coronal dentin.

Ferrari, M., Goracci, C., Sadek, F.T., Monticelli, F., Tay, F.R. (2006). An investigation of the interfacial strengths of methacrylate resin-based glass fiber post-core buildups. JOURNAL OF ADHESIVE DENTISTRY, 8(4), 239-245.

An investigation of the interfacial strengths of methacrylate resin-based glass fiber post-core buildups

FERRARI M.;GORACCI C.;
2006-01-01

Abstract

Purpose: To assess the microtensile bond strengths of a core composite with two different viscosities, MultiCore Flow (F) and Heavy Body (HB) (Ivoclar-Vivadent), on dentin and glass-fiber posts with methacrylate resin matrices, in combination with three dentin adhesives: Syntac Classic (S), Excite DSC (E), and AdheSE (A) (Ivoclar-Vivadent). The omission of an intermediate adhesive coating on silanized posts was also examined to see if this resulted in post-core bond strength reduction. Materials and Methods: Six experimental dentin and 6 experimental post groups were formed with different core material viscosity/adhesive combinations. In two control post groups, no adhesive was applied on the silanized posts. The core material was stratified on deep dentin or on the posts. From the built-up teeth and the post-core units, microtensile sticks were obtained. Results: The bond strengths measured on dentin were (MPa): S-F 12.7 +/- 6.4; S-HB 18.3 +/- 7.6; E-F 33.1 +/- 13.7; E-HB 34.1 +/- 10.2; A-F 33.5 +/- 14.8; A-HB 35.5 +/- 14.4. The post-core strengths were: S-F 9.4 +/- 2.5; S-HB 7.1 +/- 3.8; E-F 8.6 +/- 3.8; E-HB 8.1 +/- 4.4; A-F 8.1 +/- 2.7; A-HB 8.3 +/- 2.4; no adhesive-F 10.4 +/- 3.6; no adhesive-HB 6.3 +/- 2.7. Significantly higher interfacial strengths were achieved on dentin than on posts (p<0.05). Adhesive type significantly affected core-dentin adhesion, with Excite DSC and AdheSE outperforming Syntac Classic (p<0.05). Neither core material viscosity nor adhesive type significantly influenced post-core adhesion (p>0.05). Omission of an intermediate adhesive layer had no effect on post-core adhesion (p>0.05). Conclusions: Even after post surface silanization, the bond established by the composite core material with the post remains weaker than that created with coronal dentin.
2006
Ferrari, M., Goracci, C., Sadek, F.T., Monticelli, F., Tay, F.R. (2006). An investigation of the interfacial strengths of methacrylate resin-based glass fiber post-core buildups. JOURNAL OF ADHESIVE DENTISTRY, 8(4), 239-245.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/12245
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