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Dentin and enamel bond strengths of dual-cure composite luting agents used with dual-cure dental adhesives.
J Dent. 2009 Jan; 37(1):59-64.JD

Abstract

OBJECTIVE

The purpose of this in vitro study was to evaluate and compare dentin and enamel bond strengths obtained with dual-cure composite luting agents when used with dual-cure dental adhesives.

METHODS

Human molars were ground flat to expose enamel (n=80) or dentin (n=80). Specimens in each substrate group were randomly assigned to eight treatment sub-groups, according to four adhesive-luting agent combinations and two test conditions (with or without thermocycling). Pre-polymerized composite resin posts (TPH Spectrum) were luted to either the enamel or dentin surfaces with one of the following adhesive-luting agent combinations: (1) Xeno IV Dual Cure (dual-cure self-etch adhesive) and Calibra (dual-cure luting agent); (2) Prime & Bond NT Dual Cure (dual-cure total-etch adhesive) and Calibra; (3) OptiBond All-in-One Dual Cure (dual-cure self-etch adhesive) and Nexus 2 Dual Syringe (dual-cure luting agent); (4) OptiBond Solo Plus Dual Cure (dual-cure total-etch adhesive) and Nexus 2 Dual Syringe. For each treatment sub-group, half the specimens (n=10) were tested after 24h storage in water at 37 degrees C, and the other half (n=10) were tested after thermocycling for 1800 cycles between water baths held at 5 and 55 degrees C, with a dwell time in each bath of 30s, and a transfer time of 10s. Bond strengths were measured in shear mode, and expressed in MPa. The fracture mode (adhesive, cohesive, mixed) was examined. Data were analyzed for statistical significance with a factorial ANOVA and post hoc tests.

RESULTS

Mean enamel bond strengths ranged from 8.4MPa for non-thermocycled OptiBond All-in-One|Nexus 2 to 35.5MPa for non-thermocycled Prime & Bond NT|Calibra. Mean dentin bond strengths ranged from 14.5MPa for non-thermocycled OptiBond Solo Plus|Nexus 2 to 30.9MPa for thermocycled Xeno IV|Calibra. The fracture mode was predominantly adhesive for all groups.

CONCLUSIONS

On enamel, the total-etch adhesives performed better than their self-etch counterparts, while in dentin, the opposite was found, i.e., the self-etch adhesives performed better than their total-etch counterparts. Thermocycling for 1800 cycles did not affect the SBS of the materials tested to dentin and enamel.

Authors+Show Affiliations

Department of Operative Dentistry, UNC Chapel Hill, School of Dentistry, 441 Brauer Hall, CB#7450, Chapel Hill, NC 27599-7450, United States. rittera@dentistry.unc.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

18926614

Citation

Ritter, André V., et al. "Dentin and Enamel Bond Strengths of Dual-cure Composite Luting Agents Used With Dual-cure Dental Adhesives." Journal of Dentistry, vol. 37, no. 1, 2009, pp. 59-64.
Ritter AV, Ghaname E, Pimenta LA. Dentin and enamel bond strengths of dual-cure composite luting agents used with dual-cure dental adhesives. J Dent. 2009;37(1):59-64.
Ritter, A. V., Ghaname, E., & Pimenta, L. A. (2009). Dentin and enamel bond strengths of dual-cure composite luting agents used with dual-cure dental adhesives. Journal of Dentistry, 37(1), 59-64. https://doi.org/10.1016/j.jdent.2008.09.006
Ritter AV, Ghaname E, Pimenta LA. Dentin and Enamel Bond Strengths of Dual-cure Composite Luting Agents Used With Dual-cure Dental Adhesives. J Dent. 2009;37(1):59-64. PubMed PMID: 18926614.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dentin and enamel bond strengths of dual-cure composite luting agents used with dual-cure dental adhesives. AU - Ritter,André V, AU - Ghaname,Eduardo, AU - Pimenta,Luiz A F, Y1 - 2008/10/15/ PY - 2008/07/28/received PY - 2008/09/04/revised PY - 2008/09/08/accepted PY - 2008/10/18/pubmed PY - 2009/5/8/medline PY - 2008/10/18/entrez SP - 59 EP - 64 JF - Journal of dentistry JO - J Dent VL - 37 IS - 1 N2 - OBJECTIVE: The purpose of this in vitro study was to evaluate and compare dentin and enamel bond strengths obtained with dual-cure composite luting agents when used with dual-cure dental adhesives. METHODS: Human molars were ground flat to expose enamel (n=80) or dentin (n=80). Specimens in each substrate group were randomly assigned to eight treatment sub-groups, according to four adhesive-luting agent combinations and two test conditions (with or without thermocycling). Pre-polymerized composite resin posts (TPH Spectrum) were luted to either the enamel or dentin surfaces with one of the following adhesive-luting agent combinations: (1) Xeno IV Dual Cure (dual-cure self-etch adhesive) and Calibra (dual-cure luting agent); (2) Prime & Bond NT Dual Cure (dual-cure total-etch adhesive) and Calibra; (3) OptiBond All-in-One Dual Cure (dual-cure self-etch adhesive) and Nexus 2 Dual Syringe (dual-cure luting agent); (4) OptiBond Solo Plus Dual Cure (dual-cure total-etch adhesive) and Nexus 2 Dual Syringe. For each treatment sub-group, half the specimens (n=10) were tested after 24h storage in water at 37 degrees C, and the other half (n=10) were tested after thermocycling for 1800 cycles between water baths held at 5 and 55 degrees C, with a dwell time in each bath of 30s, and a transfer time of 10s. Bond strengths were measured in shear mode, and expressed in MPa. The fracture mode (adhesive, cohesive, mixed) was examined. Data were analyzed for statistical significance with a factorial ANOVA and post hoc tests. RESULTS: Mean enamel bond strengths ranged from 8.4MPa for non-thermocycled OptiBond All-in-One|Nexus 2 to 35.5MPa for non-thermocycled Prime & Bond NT|Calibra. Mean dentin bond strengths ranged from 14.5MPa for non-thermocycled OptiBond Solo Plus|Nexus 2 to 30.9MPa for thermocycled Xeno IV|Calibra. The fracture mode was predominantly adhesive for all groups. CONCLUSIONS: On enamel, the total-etch adhesives performed better than their self-etch counterparts, while in dentin, the opposite was found, i.e., the self-etch adhesives performed better than their total-etch counterparts. Thermocycling for 1800 cycles did not affect the SBS of the materials tested to dentin and enamel. SN - 0300-5712 UR - https://www.unboundmedicine.com/medline/citation/18926614/Dentin_and_enamel_bond_strengths_of_dual_cure_composite_luting_agents_used_with_dual_cure_dental_adhesives_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0300-5712(08)00260-1 DB - PRIME DP - Unbound Medicine ER -