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Tensile bond strengths of five luting agents to two CAD-CAM restorative materials and enamel.
J Prosthet Dent. 2003 Jul; 90(1):18-23.JP

Abstract

STATEMENT OF PROBLEM

CAD-CAM restorative materials are popular because they have high esthetic value and short fabrication time. Unfortunately these materials are brittle and tend to fracture under heavy occlusal load.

PURPOSE

The purpose of this in vitro study was to investigate the tensile bond strengths of 5 luting agents to 2 CAD-CAM restorative materials and enamel. Material and methods One hundred truncated cones, with a 3-mm diameter bonding surface and 5-mm diameter base, were fabricated with Dicor MGC (n=50) or Cerec Vitablocs Mark II (n=50) with the Cerec system. Enamel surfaces of the crowns of 100 freshly extracted noncarious, anterior teeth, stored in 0.9% saline solution with 0.25% sodium azide (NaN(3)) as disinfectant, were prepared with sandpaper disks (320-grit size) on the Buehler Variable Speed Grinder-Polisher. The bonding surfaces of the Dicor MGC or Cerec Vitablocs Mark II truncated cones from each of the 2 tests systems were airborne particle abraded, chemically etched, and cemented on the prepared enamel surface of the tooth specimens with 5 luting agents: Vita Cerec Duo Cement, EnForce, Panavia 21, C&B Metabond, and Fuji Duet. All specimens were thermocycled 1000 times, in 5 degrees C and 55 degrees C water with a dwell time of 30 seconds in each temperature. Tensile force (MPa) was applied perpendicular to the bonding surfaces of the specimens with a universal testing machine until fracture. Fracture patterns were examined with a microscope at original magnification x10. The differences in the tensile bond strengths were analyzed with the Tukey-Kramer test (alpha=.05).

RESULTS

The mean tensile bond strengths of Dicor MGC bonding to enamel with luting agents in descending order in MPa were EnForce (10.12 +/- 2.25), Panavia 21 (7.28 +/- 1.77), Cerec Duo (5.32 +/- 1.65), Fuji Duet (3.73 +/- 1.78), and C&B Metabond (3.11 +/- 1.11). EnForce had a significantly higher bond strength than C&B Metabond, Fuji Duet, Cerec Duo, and Panavia 21 (P=.05). The mean tensile bond strengths of Cerec Vitablocs Mark II bonding to enamel with luting agents in descending order in MPa were as follow: Fuji Duet (11.51 +/- 2.79), EnForce (9.44 +/- 2.03), C&B Metabond (8.98 +/- 3.29), Cerec Duo (8.66 +/- 4.71), and Panavia 21 (5.10 +/- 2.49). Within this group, there was no significant difference between Fuji Duet and EnForce, but the bond strength of Fuji Duet was significantly higher than that of C&B Metabond, Panavia 21, and Cerec Duo (P=.05). The mean tensile strength of all the luting agents bonded to Cerec Vitablocs Mark II and enamel (8.74 MPa) was higher than Dicor MGC and enamel (5.91 MPa).

CONCLUSION

In this in vitro study; within the Dicor MGC group, the mean bond strength of Panavia 21 with enamel was significantly higher than C&B Metabond, Panavia 21, Cerec Duo, and Fuji Duet. Within the Cerec Vitablocs Mark II group, the mean bond strength of Fuji Duet was significantly higher than C&B Metabond, Panavia 21, and Cerec Duo but was not significantly higher than EnForce.

Authors+Show Affiliations

Department of Dental Public Health and Dental Hygiene, Houston Dental Branch, University of Texas, Houston, Texas, USA. Jeffrey.C.Chang@uth.tmc.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12869970

Citation

Chang, Jeffrey Chai, et al. "Tensile Bond Strengths of Five Luting Agents to Two CAD-CAM Restorative Materials and Enamel." The Journal of Prosthetic Dentistry, vol. 90, no. 1, 2003, pp. 18-23.
Chang JC, Hart DA, Estey AW, et al. Tensile bond strengths of five luting agents to two CAD-CAM restorative materials and enamel. J Prosthet Dent. 2003;90(1):18-23.
Chang, J. C., Hart, D. A., Estey, A. W., & Chan, J. T. (2003). Tensile bond strengths of five luting agents to two CAD-CAM restorative materials and enamel. The Journal of Prosthetic Dentistry, 90(1), 18-23.
Chang JC, et al. Tensile Bond Strengths of Five Luting Agents to Two CAD-CAM Restorative Materials and Enamel. J Prosthet Dent. 2003;90(1):18-23. PubMed PMID: 12869970.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Tensile bond strengths of five luting agents to two CAD-CAM restorative materials and enamel. AU - Chang,Jeffrey Chai, AU - Hart,Deborah A, AU - Estey,Allan W, AU - Chan,Jarvis T, PY - 2003/7/19/pubmed PY - 2003/9/25/medline PY - 2003/7/19/entrez SP - 18 EP - 23 JF - The Journal of prosthetic dentistry JO - J Prosthet Dent VL - 90 IS - 1 N2 - STATEMENT OF PROBLEM: CAD-CAM restorative materials are popular because they have high esthetic value and short fabrication time. Unfortunately these materials are brittle and tend to fracture under heavy occlusal load. PURPOSE: The purpose of this in vitro study was to investigate the tensile bond strengths of 5 luting agents to 2 CAD-CAM restorative materials and enamel. Material and methods One hundred truncated cones, with a 3-mm diameter bonding surface and 5-mm diameter base, were fabricated with Dicor MGC (n=50) or Cerec Vitablocs Mark II (n=50) with the Cerec system. Enamel surfaces of the crowns of 100 freshly extracted noncarious, anterior teeth, stored in 0.9% saline solution with 0.25% sodium azide (NaN(3)) as disinfectant, were prepared with sandpaper disks (320-grit size) on the Buehler Variable Speed Grinder-Polisher. The bonding surfaces of the Dicor MGC or Cerec Vitablocs Mark II truncated cones from each of the 2 tests systems were airborne particle abraded, chemically etched, and cemented on the prepared enamel surface of the tooth specimens with 5 luting agents: Vita Cerec Duo Cement, EnForce, Panavia 21, C&B Metabond, and Fuji Duet. All specimens were thermocycled 1000 times, in 5 degrees C and 55 degrees C water with a dwell time of 30 seconds in each temperature. Tensile force (MPa) was applied perpendicular to the bonding surfaces of the specimens with a universal testing machine until fracture. Fracture patterns were examined with a microscope at original magnification x10. The differences in the tensile bond strengths were analyzed with the Tukey-Kramer test (alpha=.05). RESULTS: The mean tensile bond strengths of Dicor MGC bonding to enamel with luting agents in descending order in MPa were EnForce (10.12 +/- 2.25), Panavia 21 (7.28 +/- 1.77), Cerec Duo (5.32 +/- 1.65), Fuji Duet (3.73 +/- 1.78), and C&B Metabond (3.11 +/- 1.11). EnForce had a significantly higher bond strength than C&B Metabond, Fuji Duet, Cerec Duo, and Panavia 21 (P=.05). The mean tensile bond strengths of Cerec Vitablocs Mark II bonding to enamel with luting agents in descending order in MPa were as follow: Fuji Duet (11.51 +/- 2.79), EnForce (9.44 +/- 2.03), C&B Metabond (8.98 +/- 3.29), Cerec Duo (8.66 +/- 4.71), and Panavia 21 (5.10 +/- 2.49). Within this group, there was no significant difference between Fuji Duet and EnForce, but the bond strength of Fuji Duet was significantly higher than that of C&B Metabond, Panavia 21, and Cerec Duo (P=.05). The mean tensile strength of all the luting agents bonded to Cerec Vitablocs Mark II and enamel (8.74 MPa) was higher than Dicor MGC and enamel (5.91 MPa). CONCLUSION: In this in vitro study; within the Dicor MGC group, the mean bond strength of Panavia 21 with enamel was significantly higher than C&B Metabond, Panavia 21, Cerec Duo, and Fuji Duet. Within the Cerec Vitablocs Mark II group, the mean bond strength of Fuji Duet was significantly higher than C&B Metabond, Panavia 21, and Cerec Duo but was not significantly higher than EnForce. SN - 0022-3913 UR - https://www.unboundmedicine.com/medline/citation/12869970/Tensile_bond_strengths_of_five_luting_agents_to_two_CAD_CAM_restorative_materials_and_enamel_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022391303002178 DB - PRIME DP - Unbound Medicine ER -