Effect of ‘Try-in’ paste removal method on bond strength to lithium disilicate ceramic

Prata, Renato Abdalla; Oliveira, Vinicius Pires de; Menezes, Fernando Carlos Hueb de; Borges, Gilberto Antônio; Andrade, Oswaldo Scopin de; Gonçalves, Luciano de Souza

doi:10.1016/j.jdent.2011.09.011

Cited by 21 publications

(22 citation statements)

References 27 publications

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“…Although several researchers evaluated the methods for mechanical and chemical cleaning of temporary cement off the tooth surface;8101112131415161718 only a few have assessed the effect of cleaning permanent resin cements before recementation on the bond strength 819. The most common cleaning method is rotary instrumentation with pumice or burs whose effect on the smear layer and temporary cement remnants varies from partial to complete elimination of debris or smear layer 15.…”

Section: Introductionmentioning

confidence: 99%

The effect of resin cement type and cleaning method on the shear bond strength of resin cements for recementing restorations

2017

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PURPOSEThis laboratory study assessed the effect of different dentin cleaning procedures on shear bond strength of resin cements for recementing prosthesis.MATERIALS AND METHODS4 × 4 flat surface was prepared on the labial surface of 52 maxillary central incisors. Metal frames (4 × 4 × 1.5 mm) were cast with nickel-chromium alloy. All specimens were randomly divided into 2 groups to be cemented with either Panavia F2.0 (P) or RelyX Ultimate (U) cement. The initial shear bond strength was recorded by Universal Testing Machine at a crosshead speed of 0.5 mm/min. Debonded specimens were randomly allocated into 2 subgroups (n = 13) according to the dentin cleaning procedures for recementation. The residual cement on bonded dentin surfaces was eliminated with either pumice slurry (p) or tungsten carbide bur (c). The restorations were rebonded with the same cement and were subjected to shear test. Data failed the normality test (P < .05), thus were analyzed with Mann Whitney U-test, Wilcoxon signed rank test, and two-way ANOVA after logarithmic transformation (α = .05).RESULTSThe initial shear bond strength of group P was significantly higher than group U (P = .001). Pc and Uc groups presented higher bond strength after recementation compared to the initial bond strength. However, it was significant only in Pc group (P = .034).CONCLUSIONThe specimens recemented with Panavia F2.0 provided higher bond strength than RelyX Ultimate cement. Moreover, a tungsten carbide bur was a more efficient method in removing the residual resin cement and increased the bond strength of Panavia F2.0 cement after recementation.

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Section: Introductionmentioning

confidence: 99%

The effect of resin cement type and cleaning method on the shear bond strength of resin cements for recementing restorations

2017

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“…Resin cements are now widely used in clinical dentistry and improved or new versions are constantly being introduced which are claimed to offer advantages over their predecessors 1,2. The ability of luting multiple structures together, high resistance, less solubility in mouth liquids and colour options makes resin cements an alternative in cementation of esthetical restorastions 3.…”

Section: Introductionmentioning

confidence: 99%

Microshear bond strength according to dentin cleansing methods before recementation

Taşar¹,

Ulusoy²,

Meriç³

2014

J Adv Prosthodont

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PURPOSEThe aim of this study was to determine the efficiency of Erbium, Chromium: Yttrium-Scandium-Gallium-Garnet laser in different output powers for removing permanent resin cement residues and therefore its influence on microshear bond strength compared to other cleaning methods.MATERIALS AND METHODS90 extracted human molars were sectioned in 1 mm thickness. Resin cement was applied to surface of sliced teeth. After the removal of initial cement, 6 test groups were prepared by various dentin surface treatment methods as follows: no treatment (Group 1), ethylene diamine tetra acetic acid application (Group 2), Endosolv R application (Group 3), 1.25 W Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet laser irradiation (Group 4), 2 W Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet laser irradiation (Group 5) and 3.5 W Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet laser irradiation (Group 6). The topography and morphology of the treated dentin surfaces were investigated by scanning electron microscopy (n=2 for each group). Following the repetitive cementation, microshear bond strength between dentin and cement (n=26 in per group) were measured with universal testing machine and the data were analyzed by Kruskal Wallis H Test with Bonferroni correction (P<.05). Fracture patterns were investigated by light microscope.RESULTSMean microshear bond strength ± SD (MPa) for each group was 34.9 ± 17.7, 32.1 ± 15.8, 37.8 ± 19.3, 31.3 ± 12.7, 44.4 ± 13.6, 40.2 ± 13.2 respectively. Group 5 showed significantly difference from Group 1, Group 2 and Group 4. Also, Group 6 was found statistically different from Group 4.CONCLUSION2 W and 3.5 W Erbium, Chromium: Yttrium-Scandium-Gallium-Garnet laser application were found efficient in removing resin residues.

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“…10 Try-in pastes are handled in a way similar to the handling of resin cements, and have to be removed from the preparation after shade selection, because the glycerin residues may compromise the bonding between resin cement and tooth. 11,12 Some studies have evaluated the shade agreement between the try-in systems and their respective cements, and have found no significant differences. 13,14 Only Alghazali et al 15 evaluated shade agreement after dental ceramic cementation.…”

Section: Introductionmentioning

confidence: 99%

Color agreement between nanofluorapatite ceramic discs associated with try-in pastes and with resin cements

et al. 2012

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The aim of this study was to evaluate the in vitro color agreement between nanofluorapatite ceramic discs (e.max Ceram / Ivoclar Vivadent / A2) associated with try-in pastes and those bonded with resin cements (Vitique / DMG/ try-in shade A2½ and cement shade A2½, Variolink II / Ivoclar Vivadent / try-in shade A1 and cement shade A1, and Choice 2 / Bisco / try-in shade A2 and cement shade A2), and to evaluate the shade stability of the discs bonded with resin cements. The shades of composite resin discs (Lliss / FGM / A2) and nanofluorapatite ceramic discs with try-in pastes or cements were evaluated according to the Vita Classical shade guide by a digital spectrophotometer (Micro EspectroShade, MHT) immediately after placing the try-in pastes or resin cements between composite resin discs and ceramic discs. Other evaluations were performed at 2, 5, and 6 day intervals after cementation with the resin cements. All ceramic discs that received try-in pastes presented an A2 shade. There was no statistical difference in the shade of the ceramic specimens fixed with different cements at the different intervals, as evaluated by the Friedman test (p > 0.05). Two try-in pastes presented shade compatibility with those recommended by the manufacturers. There was no similarity of shades between the ceramic discs with try-in pastes and those with the respective resin cements. Shade stability was observed in ceramic discs with resin cements within the intervals evaluated.

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Effect of ‘Try-in’ paste removal method on bond strength to lithium disilicate ceramic

Cited by 21 publications

References 27 publications

The effect of resin cement type and cleaning method on the shear bond strength of resin cements for recementing restorations

The effect of resin cement type and cleaning method on the shear bond strength of resin cements for recementing restorations

Microshear bond strength according to dentin cleansing methods before recementation

Color agreement between nanofluorapatite ceramic discs associated with try-in pastes and with resin cements

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