Marginal microleakage of class V resin-based composite restorations bonded with six one-step self-etch systems

Introduction: Some studies have shown that laser irradiation on unpolymerized adhesives can improve composite-dentin adhesion. The aim of the present study was to evaluate the effect of the diode laser (810 nm) on the microleakage of multi-mode adhesive systems at enamel and dentin margins of composite restorations. Methods: Classic class V boxes were prepared on 48 sound premolar teeth and randomly divided into 6 groups (n=16). In the control groups, Scotchbond Universal (SBC), G-Premio (GBC), and Ambar U (AMC) were used by a self-etch mode. In the test groups (SBL, GBL, ABL), the 810 nm diode laser was irradiated (1 W) for 10 seconds before the polymerization of the adhesive. The boxes were restored by the resin composite. After finishing and polishing, the samples were thermocycled (5°C to 55°C) for 1000 cycles and then immersed in 0.1% methylene blue dye (48 hours). Dye penetration through the gingival and occlusal margins was measured by Stereomicroscope. The data were analyzed at the 5% significance level using Kruskal-Wallis and Mann-Whitney U tests. Results: Significant differences were found between the control and test groups (P<0.05). The occlusal margins of the SBL and GBL groups and the cervical margin of the SBL group exhibited the lowest microleakage (P<0.05). The AM control group showed maximum microleakage at cervical and occlusal margins. Conclusion: The irradiation of the 810 nm diode laser on the unpolymerized universal adhesive systems in a self-etch mode caused a significant reduction in enamel and dentin marginal microleakage of composite restorations.

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Impact of Different Etching Strategies on Margin Integrity of Conservative Composite Restorations in Demineralized Enamel

Materials ◽

10.3390/ma13204500 ◽

2020 ◽

Vol 13 (20) ◽

pp. 4500

Author(s):

Mohamed El Gedaily ◽

Thomas Attin ◽

Daniel B. Wiedemeier ◽

Tobias T. Tauböck

Keyword(s):

Phosphoric Acid ◽

Clinical Success ◽

Resin Composite ◽

Key Factors ◽

Composite Restorations ◽

Carious Lesions ◽

Demineralized Enamel ◽

Bonded Composite ◽

One Step ◽

Self Etch

Good margin integrity with a tight seal of the adhesive interface is considered one of the key factors for the clinical success of composite restorations. This study investigated the effect of enamel etching with phosphoric acid on the margin integrity of self-etch bonded composite restorations in demineralized enamel. Crowns of bovine incisors were assigned into 14 groups (n = 10 per group) of which ten groups (groups 1–5 and 8–12) were demineralized (21 days, acid buffer, pH 4.95) to create artificial carious lesions. Standardized Class V cavities were prepared in all specimens. Demineralized groups were either etched with phosphoric acid for 10, 30, 60, or 120 s (groups 2–5 and 9–12), or no etching was performed (groups 1 and 8). The non-demineralized (sound) groups were etched for 10 s (groups 7 and 14) or remained non-etched (groups 6 and 13). Resin composite restorations were then placed using either a one-step (iBond Self Etch, groups 1–7) or two-step self-etch adhesive (Clearfil SE Bond, groups 8–14). Margin integrity of the restorations was assessed after thermocycling (5000×, 5–55 °C) using scanning electron microscopy, and the percentage of continuous margins (%CM) was statistically analyzed (α = 0.05). Phosphoric acid etching significantly increased %CM in both demineralized and sound enamel. For iBond Self Etch, a significant increase in %CM in demineralized enamel was observed with increased etching times. All etched groups treated with Clearfil SE Bond and those etched for 60 or 120 s and treated with iBond Self Etch showed similar %CM in demineralized enamel as in etched sound enamel, and significantly higher %CM than in non-etched sound enamel. In conclusion, enamel etching with phosphoric acid improves margin integrity of composite restorations in demineralized enamel when bonded with the examined adhesives.

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Marginal Permeability of Self-etch and Total-etch Adhesive Systems

Operative Dentistry ◽

10.2341/04-185 ◽

2006 ◽

Vol 31 (1) ◽

pp. 60-67 ◽

Cited By ~ 20

Author(s):

B. M. Owens ◽

W. W. Johnson ◽

E. F. Harris

Keyword(s):

Clinical Relevance ◽

Resin Composite ◽

Adhesive Systems ◽

Class V ◽

Strict Adherence ◽

Dentin Surface ◽

Composite Restorations ◽

Surface Anatomy ◽

Self Etch

Clinical Relevance Decreased leakage was associated with Adper Scotchbond Multi-Purpose (total etch) and iBond (self-etch) systems in Class V resin composite restorations. All adhesive systems performed best when bonded to enamel compared to dentin surface anatomy. Clinicians should be aware that strict adherence to manufacturer instructions, when using these materials, is of primary importance.

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Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations

International Journal of Dentistry ◽

10.1155/2010/728453 ◽

2010 ◽

Vol 2010 ◽

pp. 1-6 ◽

Cited By ~ 8

Author(s):

Sabine O. Geerts ◽

Laurence Seidel ◽

Adelin I. Albert ◽

Audrey M. Gueders

Keyword(s):

Polyacrylic Acid ◽

Glass Ionomer Cement ◽

Adhesive System ◽

Glass Ionomer ◽

Class V ◽

Significant Difference ◽

Resin Modified Glass Ionomer ◽

One Step ◽

Self Etch ◽

Ionomer Cement

This study was designed to evaluate microleakage that appeared on Resin-Modified Glass-Ionomer Cement (RMGIC) restorations. Sixty class V cavities () were cut on thirty extracted third molars, which were randomly allocated to three experimental groups. All the buccal cavities were pretreated with polyacrylic acid, whereas the lingual cavities were treated with three one-step Self-Etch adhesives, respectively, Xeno III (Dentsply Detrey GmbH, Konstanz, Germany), iBond exp (Heraeus Kulzer gmbH & Co. KG, Hanau, Germany), and Adper Prompt-L-Pop (3M ESPE AG, Dental products Seefeld, Germany). All cavities were completely filled with RMGIC, teeth were thermocycled for 800 cycles, and leakage was evaluated. Results were expressed as means standard deviations (SDs). Microleakage scores were analysed by means of generalized linear mixed models (GLMMs) assuming an ordinal logistic link function. All results were considered to be significant at the 5% critical level (). The results showed that bonding RMGIC to dentin with a Self-Etch adhesive rather than using polyacrylic acid did not influence microleakage scores (), except for one tested Self-Etch adhesive, namely, Xeno III (). Nevertheless, our results did not show any significant difference between the three tested Self-Etch adhesive systems. In conclusion, the pretreatment of dentin with Self-Etch adhesive system, before RMGIC filling, seems to be an alternative to the conventional Dentin Conditioner for the clinicians as suggested by our results (thermocycling) and others (microtensile tests).

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Analysis of Marginal Adaptation and Sealing to Enamel and Dentin of Four Different One-step Self- etch Adhesives in Class II Resin Composite Restorations

Mansoura Journal of Dentistry ◽

10.21608/mjd.2016.201773 ◽

2016 ◽

Vol 3 (11) ◽

pp. 26-31

Keyword(s):

Resin Composite ◽

Class Ii ◽

Marginal Adaptation ◽

Composite Restorations ◽

One Step ◽

Self Etch

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Influence of selective etching on the enamel and dentin leakage of three low shrinkage composites in class V restoration

Materials Express ◽

10.1166/mex.2020.1845 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1941-1949

Author(s):

Hend N. Al-Nahedh

Keyword(s):

Silver Nitrate ◽

Selective Etching ◽

Thermal Cycles ◽

Class V ◽

Bond Force ◽

Selective Etch ◽

Significant Difference ◽

One Step ◽

Self Etch ◽

Ammoniacal Silver

This study determined if prior selective enamel etching affected leakage of enamel/dentin margins in Class V low-shrinkage resin-based composite restorations. Round cavities, centered on the cemento/enamel junction, 2 mm in diameter and 2 mm in depth were prepared on the buccal, palatal or lingual surfaces of premolar teeth to have a total of 60 cavities. One side of the tooth received selective enamel etching and both sides were restored using one of 3 restorative materials (n = 10): Aelite LS posterior/All-bond SE, Estelite Sigma Quick/Bond Force, or Filtek P90/P90 System Adhesive. The teeth were fatigued for 5000 thermal cycles, and the marginal sealing was challenged with 50% ammoniacal silver nitrate. The interface was analyzed and the leakage score was calculated. Two-way ANOVA revealed that Filtek P90 (25.5±17.4) had lower leakage than Estelite Sigma Quick (63.1±34.5) and Aelite LS Posterior (64.2±41.8) with self-etching. With selective etching, the three materials showed reduced leakage in enamel. A significant difference (P <0.05) was found between leakage in enamel and dentin for the Aelite LS Posterior selective etch group and for Estelite Sigma Quick. Selective etching reduced enamel leakage for all materials in one-step self-etch materials. Two-step self-etch adhesives bond better to enamel and dentin than one-step resin-based adhesives.

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Four-year clinical evaluation of Class II nano-hybrid resin composite restorations bonded with a one-step self-etch and a two-step etch-and-rinse adhesive

Journal of Dentistry ◽

10.1016/j.jdent.2010.09.006 ◽

2011 ◽

Vol 39 (1) ◽

pp. 16-25 ◽

Cited By ~ 38

Author(s):

Jan W.V. van Dijken ◽

Ulla Pallesen

Keyword(s):

Clinical Evaluation ◽

Resin Composite ◽

Class Ii ◽

Hybrid Resin ◽

Composite Restorations ◽

Etch And Rinse ◽

One Step ◽

Self Etch

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Microleakage and Shear Bond Strength of Composite Restorations Under Cycling Conditions

Operative Dentistry ◽

10.2341/16-132-l ◽

2017 ◽

Vol 42 (2) ◽

pp. E71-E80 ◽

Cited By ~ 8

Author(s):

RF Zanatta ◽

M Lungova ◽

AB Borges ◽

CRG Torres ◽

H-G Sydow ◽

...

Keyword(s):

Bond Strength ◽

Thermal Cycling ◽

Shear Bond Strength ◽

Composite Resin ◽

Control Group ◽

Strength Testing ◽

Class V ◽

Composite Restorations ◽

Etch And Rinse ◽

Self Etch

SUMMARY Objectives: The aim of this study was to evaluate microleakage and shear bond strength of composite restorations under different cycling conditions. Methods and Materials: Class V cavities were prepared in the buccal and lingual surfaces of 30 human molars (n=60). A further 60 molars were used to prepare flat enamel and dentin specimens (n=60 each). Cavities and specimens were divided into six groups and pretreated with an adhesive (self-etch/Clearfil SE Bond or etch-and-rinse/Optibond FL). Composite was inserted in the cavities or adhered to the specimens' surfaces, respectively, and submitted to cycling (control: no cycling; thermal cycling: 10,000 cycles, 5°C to 55°C; thermal/erosive cycling: thermal cycling plus storage in hydrochloric acid pH 2.1, 5 minutes, 6×/day, 8 days). Microleakage was quantified by stereomicroscopy in enamel and dentin margins after immersion in silver nitrate. Specimens were submitted to shear bond strength testing. Statistical analysis was done by two-way analysis of variance and Kruskal-Wallis tests (p<0.05). Results: Microleakage in enamel margins was significantly lower in the control group compared with thermal cycling or thermal/erosive cycling. Erosive conditions increased microleakage compared with thermal cycling (significant only for Clearfil SE Bond). No significant differences were observed in dentin margins. Bond strength of enamel specimens was reduced by thermal cycling and thermal/erosive cycling when Clearfil SE Bond was used and only by thermal/erosive cycling when Optibond FL was used. No differences were observed among dentin specimens. Conclusions: Thermal/erosive cycling can adversely affect microleakage and shear bond strength of composite resin bonded to enamel.

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Microleakage of Class V Resin Composites using Various Self-etching Adhesives: An in vitro Study

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1269 ◽

2013 ◽

Vol 14 (1) ◽

pp. 51-55 ◽

Cited By ~ 2

Author(s):

PV Ravi Chandra ◽

V Harikumar ◽

D Ramkiran ◽

MJN Krishna ◽

M Veerabhadra Gouda

Keyword(s):

Rank Test ◽

Blue Dye ◽

Apical Region ◽

Resin Composites ◽

Apical Margin ◽

Class V ◽

Composite Restorations ◽

Tooth Discoloration ◽

Self Etch

ABSTRACT Background and aims Microleakage has been identified as a significant problem with composite restorations because of interfacial gap formation which can result in tooth discoloration, recurrent caries, possible pulpal involvement and restoration replacement. Aim of this study is to evaluate the microleakage of self-etch adhesive system at the coronal and apical margins of class V resin composite restorations under stereomicroscope at 20× magnification. Materials and methods Class V cavities were prepared on the facial surfaces of 48 human premolars with coronal margins located in enamel and apical margins located in dentin. Teeth were divided into four groups: Group one—Xeno V; group two— G-Bond; group three—Clearfil S3 Bond; group four—control. After application of bonding agent and restoration, the teeth were subjected to thermocycling. The teeth were then immersed in 1% aqueous solution of methylene blue dye for 24 hours and sectioned to allow the assessment of microleakage under microscope. Results Coronal and apical margins were scored separately using a 0-3 ordinal ranking system and the recorded values were statistically analyzed using Kruskal-Wallis, Mann- Whitney U-test and Wilcoxon signed rank test. Statistical analysis showed that there was less microleakage in Xeno V at coronal region and Clearfil S3 Bond in apical region, overall Clearfil S3 Bond showed less marginal permeability in both coronal and apical regions. Conclusion Specimens restored with the Xeno V and Clearfil S3 Bond adhesive systems revealed reduced leakage at the coronal margin. At the apical margin, Xeno V showed greater leakage than the other groups, except the control. Clinical significance In class V restorations restored with composite resin, the choice of material affects the microleakage and retention of the restoration. This study theorizes that the self-etch adhesives show less microleakage in the coronal area than the apical margin. How to cite this article Chandra PVR, Harikumar V, Ramkiran D, Krishna MJN, Gouda MV. Microleakage of Class V Resin Composites using Various Self-etching Adhesives: An in vitro Study. J Contemp Dent Pract 2013;14(1):51-55.

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