Long-term storage affects adhesion between titanium and zirconia using resin cements.

Cvikl, Barbara; Dragic, Mirza; Franz, Alexander; Raabe, Modesto; Gruber, Reinhard; Moritz, Andreas (2014). Long-term storage affects adhesion between titanium and zirconia using resin cements. Journal of adhesive dentistry, 16(5), pp. 459-464. Quintessence Publ. 10.3290/j.jad.a32809

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PURPOSE

To determine the impact of long-term storage on adhesion between titanium and zirconia using resin cements.

MATERIALS AND METHODS

Titanium grade 4 blocks were adhesively fixed onto zirconia disks with four resin cements: Panavia F 2.0 (Kuraray Europe), GC G-Cem (GC Europe), RelyX Unicem (3M ESPE), and SmartCem 2 (Dentsply DeguDent). Shear bond strength was determined after storage in a water bath for 24 h, 16, 90, and 150 days at 37°C, and after 6000 cycles between 5°C and 55°C. Fracture behavior was evaluated using scanning electron microscopy.

RESULTS

After storage for at least 90 days and after thermocycling, GC G-Cem (16.9 MPa and 15.1 MPa, respectively) and RelyX Unicem (10.8 MPa and 15.7 MPa, respectively) achieved higher shear bond strength compared to SmartCem 2 (7.1 MPa and 4.0 MPa, respectively) and Panavia F2 (4.1 MPa and 7.4 MPa, respectively). At day 150, GC G-Cem and RelyX Unicem caused exclusively mixed fractures. SmartCem 2 and Panavia F2 showed adhesive fractures in one-third of the cases; all other fractures were of mixed type. After 24 h (GC G-Cem: 26.0, RelyX Unicem: 20.5 MPa, SmartCem 2: 16.1 MPa, Panavia F2: 23.6 MPa) and 16 days (GC G-Cem: 12.8, RelyX Unicem: 14.2 MPa, SmartCem 2: 9.8 MPa, Panavia F2: 14.7 MPa) of storage, shear bond strength was similar among the four cements.

CONCLUSION

Long-term storage and thermocycling differentially affects the bonding of resin cement between titanium and zirconia.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > School of Dental Medicine > Restorative Dentistry, Research
UniBE Contributor:	Cvikl, Barbara, Gruber, Reinhard
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1461-5185
Publisher:	Quintessence Publ.
Language:	English
Submitter:	Eveline Carmen Schuler
Date Deposited:	29 Jan 2015 09:57
Last Modified:	05 Dec 2022 14:39
Publisher DOI:	10.3290/j.jad.a32809
PubMed ID:	25264548
Uncontrolled Keywords:	titanium, zirconia, long-term storage, thermocycling, shear bond strength
URI:	https://boris.unibe.ch/id/eprint/62230