The effect of dentin pretreatment on the microtensile bond strength of self-adhesive resin cements

Pavan, Sabrina; Santos, Paulo Henrique dos; Berger, Sandrine Bittencourt; Bedran-Russo, Ana K.

doi:10.1016/s0022-3913(10)60134-5

Cited by 67 publications

(108 citation statements)

References 26 publications

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“…Dentin conditioning with PAA resulted in a significantly high MTBS values with both resin cements compared to Control groups. The mild acidic effect of PAA could partially remove the smear layer, leaving dentin mineral phase, thus enhancing the chemical reaction between resin cement and dentin substrate [29]. Both cement types used in this study are self-etching and selfadhesive luting agents that produce no visible hybrid layer [20,32].…”

Section: Discussionmentioning

confidence: 99%

“…In order to enhance the bond strength of self-adhesive cements to dentin, different conditioning methods were suggested such as air abrasion, mechanical cleaning with pumice slurry, sodium hypochlorite irrigation, chlorhexidine digluconate (CHX), polyacrylic acid (PAA), and ethylene diamine tetra acetic acid (EDTA) [23][24][25][26][27][28][29][30][31][32]. Recently, the use of chitosan was suggested as a more biocompatible chelating agent to condition the smear layer on dentin [33].…”

Section: Introductionmentioning

confidence: 99%

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Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

2014

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The aim of this study was to test the effect of different chelating agents on microtensile bond strength (MTBS) of self-adhesive resin cements to dentin. The occlusal surfaces of extracted human mandibular molars (N = 80) were cut horizontally to expose sound dentin. The teeth were randomly divided into four groups (n = 20 per group) and dentin surfaces were conditioned according to one of the following methods: group C: no treatment (control group); group CH: 0.2 % chitosan; group E: 17 % ethylene diamine tetra acetic acid (EDTA) and group P: 25 % polyacrylic acid (PAA). Lithium disilicate glass ceramic (e.max CAD) blocks were cemented to conditioned dentin surfaces with self-adhesive cements (RelyX Unicem or Clearfil SA) and photo-polymerized. Specimens were stored in distilled water at 37°C for 24 h and thermocycled for 6,000 times. The beams were obtained from bonded ceramic-cement-tooth assemblies and were subjected to the MTBS test (1 mm/min). Failure types were analyzed and selected beams were examined under scanning electron microscope. Data (MPa) were analyzed using two-way ANOVA and Tukey's test (P < 0.05). While cement type significantly affected the MTBS results (P < 0.05), no significant difference was observed between the dentin chelating agents (P = 0.785). Interaction terms were not significant (P = 0.114). Control group with no dentin conditioning presented significantly lower results with both cements (RelyX Unicem: 8.1 ± 1.9(a), Clearfil SA: 8 ± 1.6(a)) than those of conditioned groups (19.3 ± 4.2(b)-24.5 ± 5.2(b)) (P < 0.05). Failure types were predominantly adhesive in all groups. Chitosan (2 %), EDTA (17 %) or PAA (25 %) could all be used as dentin chelating agents in conjunction with self-adhesive resin cements tested. Abstract:The aim of this study was to test the effect of different chelating agents on microtensile bond strength (MTBS) of self-adhesive resin cements to dentin. The occlusal surfaces of extracted human mandibular molars (N=80) were cut horizontally to expose sound dentin. The teeth were randomly divided into 4 groups (n=20 per group) and dentin surfaces were conditioned according to one of the following methods: Group C: No treatment (Control group); Group CH: 0.2% chitosan; Group E: 17% ethylene diamine tetra acetic acid (EDTA) and Group P: 25% polyacrylic acid (PAA). Lithium disilicate glass ceramic (e.max CAD) blocks were cemented to conditioned dentin surfaces with self-adhesive cements (RelyX Unicem or Clearfil SA) and photo-polymerized.Specimens were stored in distilled water at 37 o C for 24 hours and thermocycled for 6000 times.The beams were obtained from bonded ceramic-cement-tooth assemblies and they were subjected to the MTBS test (1 mm/min). Failure types were analyzed and selected beams were examined under scanning electron microscope. Data (MPa) were analyzed using two-way ANOVA and Tukey's test (P<0.05). While cement type significantly affected the MTBS results (P<0.05), no significant difference was observed between the dentin chelating agents (...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

2014

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“…Their limited ability to dissolve the smear layer could impair the infiltration of functional monomers into the underlying dentin, which would lead to a 'weak' link in the mechanism of adhesion to dentin 5) . Therefore, several studies have proposed that the smear layer should be treated with a pre-conditioner or self-etching adhesive agent in order to enhance the interaction between the cements and dentin 4,[6][7][8] . Clinically, EDTA has been used as a smear layer treatment agent.…”

Section: Introductionmentioning

confidence: 99%

Effect of smear layer treatment on dentin bond of self-adhesive cements

et al. 2012

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The purpose of this study was to compare the dentin bond strength of three self-adhesive cements with smear layer pretreatments using a calcium-chelating agent (EDTA) and deproteinizing solution (NaOCl) and to evaluate their interfacial characteristics. Smear layer-covered dentin surfaces were pretreated with EDTA for 60 s, NaOCl for 5 and 15 s, or none. Three self-adhesive cements; Clearfil SA luting (Kuraray Medical), Rely X Unicem clicker (3M ESPE) and Breeze (Pentron) were applied to the dentin surfaces. After 24-h water storage, shear bond strengths to dentin were determined. In addition, nanoleakage evaluation at the interface was performed using FE-SEM and EDS. EDTA-pretreatment significantly improved the bond strength of BR (p<0.05) and NaOCl-pretreatment for 15 s significantly improved the bond strength of RX (p<0.05). On the other hand, for SA, both pretreatments significantly decreased bond strength to dentin (p<0.05). Nanoleakage formation was observed in various amounts at the cement-dentin interfaces.

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“…4 Workers investigating pretreatment of dentin with acid solutions have reported that removing the smear layer improved the interaction between SARCs and dentin. [4][5][6][7] However, the results of these studies were often material dependent, and pretreatment with phosphoric acid resulted in reduction of the bond strength since the presence of collagen fibrils reduced the penetration of the cement. 7 It is therefore expected that dentin deproteinization with collagen removal will increase the contact between SARCs and dentin.…”

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confidence: 99%

Dentin deproteinization effect on bond strength of self-adhesive resin cements

et al. 2013

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Dentin deproteinization effect on bond strength of self-adhesive resin cements abstract: This study examined the effect of deproteinization on the bond strength between self-adhesive resin cements and dentin surfaces that were untreated (control), acid-etched, or acid-etched and subjected to a post-etch deproteinization treatment. Cylinders of RelyX Unicem or BisCem (n = 6) cement were build-up on the dentin surfaces and tested to determine shear strength. The results were analyzed using two-way ANOVA and Tukey's test (5%). While neither dentin pretreatment improved the bond strength for RelyX Unicem, deproteinization treatments resulted in greater bond strength in BisCem specimens while acid etching alone did not improve the performance of the material.

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The effect of dentin pretreatment on the microtensile bond strength of self-adhesive resin cements

Cited by 67 publications

References 26 publications

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

Effect of smear layer treatment on dentin bond of self-adhesive cements

Dentin deproteinization effect on bond strength of self-adhesive resin cements

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