Effects of Coronal Substrates and Water Storage on the Microhardness of a Resin Cement Used for Luting Ceramic Crowns

Overview

Journal J Appl Oral Sci

Specialty Dentistry

Date 2014 Aug 21

PMID 25141200

Authors

Luana Menezes de Mendonca

Luiz Fernando Pegoraro

Marcos Daniel Septimio Lanza

Thiago Amadei Pegoraro

Ricardo Marins de Carvalho

Affiliations

Soon will be listed here.

Abstract

Unlabelled: Composite resin and metallic posts are the materials most employed for reconstruction of teeth presenting partial or total destruction of crowns. Resin-based cements have been widely used for cementation of ceramic crowns. The success of cementation depends on the achievement of adequate cement curing.

Objectives: To evaluate the microhardness of Variolink® II (Ivoclar Vivadent, Schaan, Liechtenstein), used for cementing ceramic crowns onto three different coronal substrate preparations (dentin, metal, and composite resin), after 7 days and 3 months of water storage. The evaluation was performed along the cement line in the cervical, medium and occlusal thirds on the buccal and lingual aspects, and on the occlusal surface.

Material And Methods: Thirty molars were distributed in three groups (N=10) according to the type of coronal substrate: Group D- the prepared surfaces were kept in dentin; Groups M (metal) and R (resin)- the crowns were sectioned at the level of the cementoenamel junction and restored with metallic cast posts or resin build-up cores, respectively. The crowns were fabricated in ceramic IPS e.max® Press (Ivoclar Vivadent, Schaan, Liechtenstein) and luted with Variolink II. After 7 days of water storage, 5 specimens of each group were sectioned in buccolingual direction for microhardness measurements. The other specimens (N=5) were kept stored in deionized water at 37ºC for three months, followed by sectioning and microhardness measurements.

Results: Data were first analyzed by three-way ANOVA that did not reveal significant differences between thirds and occlusal surface (p=0.231). Two-way ANOVA showed significant effect of substrates (p<0.001) and the Tukey test revealed that microhardness was significantly lower when crowns were cemented on resin cores and tested after 7 days of water storage (p=0.007).

Conclusion: The type of material employed for coronal reconstruction of preparations for prosthetic purposes may influence the cement properties.

Citing Articles

Current Trends for Cementation in Prosthodontics: Part 1-The Substrate.

Maravic T, Mazzitelli C, Mayer-Santos E, Mancuso E, Gracis S, Breschi L Polymers (Basel). 2025; 17(5).

PMID: 40076059 PMC: 11902431. DOI: 10.3390/polym17050566.

References

Tay F, Frankenberger R, Krejci I, Bouillaguet S, Pashley D, Carvalho R . Single-bottle adhesives behave as permeable membranes after polymerization. I. In vivo evidence. J Dent. 2004; 32(8):611-21. DOI: 10.1016/j.jdent.2004.04.006. View

Bortolotto T, Guillarme D, Gutemberg D, Veuthey J, Krejci I . Composite resin vs resin cement for luting of indirect restorations: comparison of solubility and shrinkage behavior. Dent Mater J. 2013; 32(5):834-8. DOI: 10.4012/dmj.2013-153. View

Ortengren U, Elgh U, Spasenoska V, Milleding P, Haasum J, Karlsson S . Water sorption and flexural properties of a composite resin cement. Int J Prosthodont. 2001; 13(2):141-7. View

Zhang X, Wang F . Hardness of resin cement cured under different thickness of lithium disilicate-based ceramic. Chin Med J (Engl). 2012; 124(22):3762-7. View

Oysaed H, Ruyter I . Composites for use in posterior teeth: mechanical properties tested under dry and wet conditions. J Biomed Mater Res. 1986; 20(2):261-71. DOI: 10.1002/jbm.820200214. View

Ilie N, Hickel R . Correlation between ceramics translucency and polymerization efficiency through ceramics. Dent Mater. 2007; 24(7):908-14. DOI: 10.1016/j.dental.2007.11.006. View

Cavalcanti S, Tavares de Oliveira M, Arrais C, Giannini M . The effect of the presence and presentation mode of co-initiators on the microtensile bond strength of dual-cured adhesive systems used in indirect restorations. Oper Dent. 2008; 33(6):682-9. DOI: 10.2341/08-18. View

Tay F, Pashley D, Yiu C, Sanares A, Wei S . Factors contributing to the incompatibility between simplified-step adhesives and chemically-cured or dual-cured composites. Part I. Single-step self-etching adhesive. J Adhes Dent. 2003; 5(1):27-40. View

Borges G, Agarwal P, Miranzi B, Platt J, Valentino T, Dos Santos P . Influence of different ceramics on resin cement Knoop Hardness Number. Oper Dent. 2008; 33(6):622-8. DOI: 10.2341/07-155. View

10.

Pazin M, Moraes R, Goncalves L, Borges G, Sinhoreti M, Correr-Sobrinho L . Effects of ceramic thickness and curing unit on light transmission through leucite-reinforced material and polymerization of dual-cured luting agent. J Oral Sci. 2008; 50(2):131-6. DOI: 10.2334/josnusd.50.131. View

11.

Rubo M . Hardening of new resin cements cured through a ceramic inlay. Oper Dent. 1999; 24(1):38-44. View

12.

Valentino T, Borges G, Borges L, Vishal J, Martins L, Correr-Sobrinho L . Dual resin cement knoop hardness after different activation modes through dental ceramics. Braz Dent J. 2010; 21(2):104-10. DOI: 10.1590/s0103-64402010000200003. View

13.

Uctasli S, Hasanreisoglu U, Wilson H . The attenuation of radiation by porcelain and its effect on polymerization of resin cements. J Oral Rehabil. 1994; 21(5):565-75. DOI: 10.1111/j.1365-2842.1994.tb01171.x. View

14.

Ferracane J, Berge H, Condon J . In vitro aging of dental composites in water--effect of degree of conversion, filler volume, and filler/matrix coupling. J Biomed Mater Res. 1998; 42(3):465-72. DOI: 10.1002/(sici)1097-4636(19981205)42:3<465::aid-jbm17>3.0.co;2-f. View

15.

Sanares A, Itthagarun A, King N, Tay F, Pashley D . Adverse surface interactions between one-bottle light-cured adhesives and chemical-cured composites. Dent Mater. 2001; 17(6):542-56. DOI: 10.1016/s0109-5641(01)00016-1. View

16.

Tay F, Pashley D, Suh B, Carvalho R, Itthagarun A . Single-step adhesives are permeable membranes. J Dent. 2003; 30(7-8):371-82. DOI: 10.1016/s0300-5712(02)00064-7. View

17.

Soares C, da Silva N, Fonseca R . Influence of the feldspathic ceramic thickness and shade on the microhardness of dual resin cement. Oper Dent. 2006; 31(3):384-9. DOI: 10.2341/05-51. View

18.

Meng X, Yoshida K, Atsuta M . Influence of ceramic thickness on mechanical properties and polymer structure of dual-cured resin luting agents. Dent Mater. 2007; 24(5):594-9. DOI: 10.1016/j.dental.2007.06.014. View

19.

Walker M, Spencer P, David Eick J . Mechanical property characterization of resin cement after aqueous aging with and without cyclic loading. Dent Mater. 2003; 19(7):645-52. DOI: 10.1016/s0109-5641(03)00008-3. View

20.

Blackman R, Barghi N, Duke E . Influence of ceramic thickness on the polymerization of light-cured resin cement. J Prosthet Dent. 1990; 63(3):295-300. DOI: 10.1016/0022-3913(90)90199-m. View