Luting glass ceramic restorations using a self-adhesive resin cement under different dentin conditions

Guarda, Guilherme Bottene; Gonçalves, Luciano de Souza; Correr, Américo Bortolazzo; Moraes, Rafael R.; Sinhoreti, Mário Alexandre Coelho; Correr-Sobrinho, Lourenço

doi:10.1590/s1678-77572010000300008

Cited by 38 publications

(33 citation statements)

References 16 publications

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“…These values were higher than those obtained by Piwowarczyk et al 14 11 Sarr et al, 19 Luhrs et al, 20 Mazzitelli et al, 21 Ebert et al, 22 and Inukai et al 23 Although the hydrated dentin substrate can facilitate ionization of the acid monomers, the results of this study suggested that the humidity conditions did not affect the bond strength of RelyX Unicem to dentin, i.e., no significant difference was observed when the self-adhesive was applied to surfaces with different humidity conditions. Conversely, when Guarda et al 24 did not over-dry the dentin surface before cementation, a higher bond strength was observed for RelyX Unicem. Moreover, Mazzitelli et al 21 found that RelyX Unicem performed better under simulated pulpar pressure, because the constant intrapulpar water perfusion changes the substrate wetness.…”

Section: Discussionmentioning

confidence: 90%

Bond strength of self-adhesive resin cements to dry and moist dentin

et al. 2013

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This study evaluated the effects of humidity conditions and evaluation times on the dentin bond strength (DBS) of two self-adhesive resin cements (RC). The RC used were: RelyX Unicem (3M ESPE) and Clearfil SA Cement (Kuraray Med.). One hundred and twenty coronal portions of bovine incisors (n = 10) were used. Buccal surfaces were abraded in order to expose a flat dentinal surface (180-grit SiC) and to standardize the smear layer formation (600-grit SiC). The humidity conditions tested were: dry (air-dried for 10 s), slightly moist (water application with disposable applicator on dried dentin and water excess removed with absorbent paper), and moist (same application without water removal). The RC were used according to the manufacturers' recommendations and were applied to prepolymerized resin discs (2 mm thick; Sinfony, 3M ESPE), which were subsequently bonded to the dentin surfaces. After 24 h, half of the teeth were prepared for the microtensile bond strength test, while the other half were stored in water for 6 months and tested in tension (0.5 mm/min) until failure. A 3-way analysis of variance and the Tukey test were performed (preset alpha of 0.05). No RC showed any reduction of DBS after 6 months, and no significant difference was observed between them. The moist dentin increased the bond strength of Clearfil SA Cement for both periods of time. Humidity conditions can change the DBS; however, the study's results were product-dependent.

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Section: Discussionmentioning

confidence: 90%

Bond strength of self-adhesive resin cements to dry and moist dentin

et al. 2013

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“…The filler particles in the U200 group were dispersed and protruded in the resin matrix ( Figure 1B) compared to the surfaces in the ARC group, which were smooth and regular ( Figure 2B). The self-etching luting cements had amounts of water generated during neutralization of the functional groups modified by phosphoric acid that were reused to react with acidic functional groups 9 . It is likely that the water generated during the setting reaction contributed to the erosive degradation in the U200 group, leading to greater %VHN than in the ARC group (Table 3).…”

Section: Discussionmentioning

confidence: 99%

“…However, the composition of the luting cements can influence its degradation in an acidic environment 6,7 . The luting cements available can be classified as water-based and resin-based cements [8][9][10] . The most commonly used water-based luting agents are zinc phosphate and glass-ionomer cements 11 .…”

Section: Introductionmentioning

confidence: 99%

“…The most commonly used water-based luting agents are zinc phosphate and glass-ionomer cements 11 . The resin-based luting cements are the most commonly used materials for the cementation of indirect restorations 9,10 , and they offer advantages over water-based cements, such as the ability to adhere to multiple substrates, high strength and less disintegration in the oral environment 3,[10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

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Effects of erosive challenge on the morphology and surface properties of luting cements

Gondim

Medeiros

Costa

et al. 2016

Rev. odontol. UNESP

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ResumoIntrodução: Poucos estudos investigaram as propriedades de superfície de cimentos após desafio erosivo. Objetivo: Avaliar a rugosidade da superfície (Ra), dureza Vickers (VHN) e morfologia de superfície de 4 cimentos após desafio erosivo. Material e método: Vinte amostras de cada cimento foram preparadas (4×2mm) e divididas em grupo experimental (desafio erosivo) e controle (saliva artificial) (n=10): Rely X U200 (U200); Rely X ARC (ARC); Ketac Cem Easy Mix (Ketac) e Fosfato de Zinco (ZnP). O desafio erosivo foi realizado com quatro ciclos erosivos diárias (90s) em bebida à base de cola e 2h em saliva artificial durante 7 dias. As leituras de Ra e VHN foram realizadas antes e após erosão. A porcentagem de perda de dureza (%VHN) foi obtida depois da erosão. A morfologia de superfície foi analisada por microscopia eletrônica de varredura (MEV). Foram utilizados testes de ANOVA, Tukey e T-Student (α=0,05). Resultado: Após a erosão, foi observado aumento dos valores de Ra em todos os cimentos testados, e os grupos U200 e ZNP tiveram a maior %VHN. Após imersão em saliva, apenas os grupos U200 e ZnP tiveram aumento significativo nos valores de Ra e não houve diferenças significativas entre os grupos quanto à %VHN. A análise em MEV mostrou que os grupos Ketac e ZNP apresentaram superfícies rugosas e porosas, e o grupo U200 apresentou maior degradação da matriz comparado ao grupo ARC. Conclusão: O desafio erosivo com bebida a base de cola afetou as propriedades de superfície de todos os cimentos.Descritores: Erosão dentária; cimentos de resina; cimentos de ionômero de vidro; testes de dureza. AbstractIntroduction: Few studies investigated the surface properties of luting cements after erosive challenge. Objective: To evaluate the surface roughness (Ra), Vickers hardness (VHN) and morphology of 4 luting cements after erosive challenge. Material and method: Twenty specimens of each cement were prepared (4×2mm) and divided into experimental (erosive challenge) and control (artificial saliva) groups (n=10): Rely X U200 (U200); Rely X ARC (ARC); Ketac Cem Easy Mix (Ketac) and Zinc phosphate (ZnP). The erosive challenge was performed by four daily erosive cycles (90s) in a cola drink and 2 h in artificial saliva over 7 days. Ra and VHN readings were performed before and after erosion. The percentage of hardness loss (%VHN) was obtained after erosion. The surface morphology was analyzed by scanning electron microscopy (SEM). ANOVA, Tukey and Student-T tests were used (α=0.05). Result: After erosion, all luting cements had increase in Ra values and U200 and ZnP groups had the highest %VHN. After saliva immersion, only U200 and ZnP groups had significant increases in Ra values and there were no significant differences among the groups in %VHN. SEM analysis showed that Ketac and ZnP groups had rough and porous surfaces, and U200 group had higher resin matrix degradation than ARC group. Conclusion: Erosive challenge with a cola drink affected the surface properties of all luting cements.

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“…Bonding of ceramics according to cementation strategy Self-adhesive resin cements, which consist almost exclusively of zirconium oxide-based ceramics, contain phosphate monomers that chemically bond to zirconium and may exhibit higher bond strength values after sandblasting with aluminum oxide when compared to conventional cements 14 . Furthermore, selfadhesive resin cements have the advantage of needing no bonding agent or other pre-treatment of the tooth, in addition to reducing post-cementing sensitivity 14 .…”

Section: Conclusãomentioning

confidence: 99%

Bond strength of glass-ceramic cemented to a zirconia structure: influence of adhesive cementation strategy

Tavares

Miranda

et al. 2016

RGO, Rev. Gaúch. Odontol.

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Objective This study evaluated the shear bond strength (SBS) of lithium disilicate glass (LDG) ceramic bonded to a zirconia (Y-TZP), using different cementation strategies. Methods LDG ceramic cylinders were cemented to Y-TZP structure according to the following adhesive system (AS)/resin cement (RC) (n = 15): U- self-adhesive dual-cure RC; AMBAR- AS containing phosphate monomers (PM) + dual-cure RC; group SBU: PM+Silane/AS + light-cure RC; group ALLB: PM/AS + dual-cure RC. Specimens were subjected to SBS in a universal testing machine (0.5 mm/min). Data (MPa) were subjected to one-way ANOVA and Tukey's test (α = 0,05). Results The groups SBU and ALLB had significantly higher SBS than those provided by the group U, in which the lowest values were observed. For the AMBAR group, intermediate SBS values were found, which did not differ significantly from the values observed in the other groups. Conclusion Regardless of resins cement, the use of adhesives containing phosphate monomers provided superior bond strength than self-adhesive cement.

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Luting glass ceramic restorations using a self-adhesive resin cement under different dentin conditions

Cited by 38 publications

References 16 publications

Bond strength of self-adhesive resin cements to dry and moist dentin

Bond strength of self-adhesive resin cements to dry and moist dentin

Effects of erosive challenge on the morphology and surface properties of luting cements

Bond strength of glass-ceramic cemented to a zirconia structure: influence of adhesive cementation strategy

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