A Comparative Study of Cervical Composite Restorations Microleakage Using Dental Universal Bonding and Two-step Self-etch Adhesive

SUMMARY Bulk-fill composites have been introduced to facilitate the placement of deep direct resin composite restorations. This study aimed at analyzing the cervical marginal integrity of bulk-fill vs incremental and open-sandwich class II resin composite restorations after thermomechanical cycling using replica scanning electron microscopy (SEM) and ranking according to the World Dental Federation (FDI) criteria. Box-only class II cavities were prepared in 91 maxillary premolars with the gingival margin placed 1 mm above and below the cemento-enamel junction. Eighty-four premolars were divided into self-etch and total-etch groups, then subdivided into six restorative subgroups (n=7): 1-Tetric Ceram HB (TC) was used incrementally and in the open-sandwich technique with 2-Tetric EvoFlow (EF) and 3-Smart Dentin Replacement (SD). Bulk-fill restoratives were 4-SonicFill (SF), 5-Tetric N-Ceram Bulk Fill (TN), and 6-Tetric EvoCeram Bulk Fill (TE). In subgroups 1-5, Tetric N-Bond self-etch and Tetric N-Bond total-etch adhesives were used, whereas in subgroup 6, AdheSE self-etch and ExciTE F total etch were used. One more group (n=7) was restored with Filtek P90 Low Shrink Posterior Restorative (P9) only in combination with its self-etch P90 System Adhesive. Materials were manipulated and light cured (20 seconds, 1600 mW/cm2), and restorations were artificially aged by thermo-occlusal load cycling. Polyvinyl-siloxane impressions were taken and poured with epoxy resin. Resin replicas were examined by SEM (200×) for marginal sealing, and percentages of perfect margins were analyzed. Moreover, samples were examined using loupes (3.5×) and explorers and categorized according to the FDI criteria. Results were statistically analyzed (SEM by Kruskal-Wallis test and FDI by chi-square test) without significant differences in either the replica SEM groups (p=0.848) or the FDI criteria groups (p>0.05). The best SEM results at the enamel margin were in TC+EF/total-etch and SF/total-etch and at the cementum margins were in SF/total-etch and TE/self-etch, while the worst were in TC/self-etch at both margins. According to FDI criteria, the best was TE/total-etch at the enamel margin, and the poorest was P9/self-etch at the cementum margin. Groups did not differ significantly, and there was a strong correlation in results between replica SEM and FDI ranking.

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Demineralized enamel reduces margin integrity of self-etch, but not of etch-and-rinse bonded composite restorations

Odontology ◽

10.1007/s10266-018-0398-6 ◽

2018 ◽

Vol 107 (3) ◽

pp. 308-315 ◽

Cited By ~ 3

Author(s):

Philipp Körner ◽

Aljmedina Sulejmani ◽

Daniel B. Wiedemeier ◽

Thomas Attin ◽

Tobias T. Tauböck

Keyword(s):

Composite Restorations ◽

Etch And Rinse ◽

Demineralized Enamel ◽

Bonded Composite ◽

Self Etch

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Effect of Diode Laser (810 nm) Irradiation on Marginal Microleakage of Multi-mode Adhesive Resins in Class V Composite Restorations

Journal of lasers in medical sciences ◽

10.15171/jlms.2019.45 ◽

2019 ◽

Vol 10 (4) ◽

pp. 275-282

Author(s):

Niusha Golbar ◽

Shahin Kasraei ◽

Anahit Afrasiabi ◽

Elahe Mostajir ◽

Seyed Masoud Mojahedi

Keyword(s):

Diode Laser ◽

Resin Composite ◽

Control Group ◽

Blue Dye ◽

Adhesive Systems ◽

Universal Adhesive ◽

Class V ◽

Composite Restorations ◽

Self Etch ◽

Multi Mode

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 Sonic Driven Technique on the Microleakage Pattern of Class V Resin Composite Restorations : In Vitro Comparative Study

Mansoura Journal of Dentistry ◽

10.21608/mjd.2018.201376 ◽

2018 ◽

Vol 5 (19) ◽

pp. 21-25

Keyword(s):

Comparative Study ◽

Resin Composite ◽

Class V ◽

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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Adhesion to Enamel of Teeth Affected by Molar Incisor Hypomineralization: Literature Review

Balkan Journal of Dental Medicine ◽

10.2478/bjdm-2018-0011 ◽

2018 ◽

Vol 22 (2) ◽

pp. 57-63

Author(s):

Apostolina Theocharidou ◽

Konstantinos Arapostathis

Keyword(s):

Adhesive System ◽

In Vitro Studies ◽

Treatment Modalities ◽

Tooth Structure ◽

Resin Infiltration ◽

Composite Restorations ◽

Molar Incisor Hypomineralization ◽

Self Etch

SummaryBackground/Aim: Molar incisor hypomineralization (MIH) is a qualitative defect of systemic origin, affecting permanent first molars and often permanent incisors. The treatment modalities can include, amongst others, fissure sealants for prevention of dental caries and composite restorations. Both require adhesion to tooth structure. The aim of this study was to review the literature on the adhesion to enamel affected by MIH.Material and Methods: A search of PupMed/Medline, ResearchGate and Google Scholar was performed and limited between 2003, when the judgement criteria for MIH were set, and 2016. Thirty-three papers were considered relevant to the subject including five in vivo and six in vitro studies. Studies involving less than ten teeth were excluded.Results: A four-year clinical trial showed that the application of a total-etch 2-step adhesive system prior to sealant placement is superior to the etch-seal technique. Despite the high success rate of composite restorations shown in three clinical longitudinal studies, there are conflicting results over self-etch being superior to total etch adhesive systems. Pretreating the enamel surface, prior to the adhesive system, with fluoride preventive solutions could reduce the mikroleakage under orthodontic brackets. Three in vitro studies provide inconsistent data about NaOCl pretreating potentials to improve adhesion of composite restorations. Resin infiltration, prior to resin restorations, could improve the microhardness of defected enamel, which may lead to increased bond strength, especially in combination with NaOCl pretreatment.Conclusions: Adhesion to enamel affected by molar incisor hypomeralization is inferior compared to normal enamel. Sealants applied with the etch-bond-seal technique have greater retention than with the etch-seal technique. Further research is required to provide evidence of the effectiveness of the adhesive system and pretreatment to achieve optimal bonding to MIH.

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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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Three-year clinical evaluation of posterior composite restorations placed with a single-step self-etch adhesive

Journal of Oral Science ◽

10.2334/josnusd.57.101 ◽

2015 ◽

Vol 57 (2) ◽

pp. 101-108 ◽

Cited By ~ 5

Author(s):

Hiroyasu Kurokawa ◽

Toshiki Takamizawa ◽

Akitomo Rikuta ◽

Keishi Tsubota ◽

Masashi Miyazaki

Keyword(s):

Clinical Evaluation ◽

Single Step ◽

Composite Restorations ◽

Self Etch

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Effect of Postoperative Peroxide Bleaching on the Marginal Seal of Composite Restorations Bonded With Self-etch Adhesives

Operative Dentistry ◽

10.2341/12-385-l ◽

2013 ◽

Vol 38 (6) ◽

pp. 644-654 ◽

Cited By ~ 5

Author(s):

A Roubickova ◽

M Dudek ◽

L Comba ◽

D Housova ◽

P Bradna

Keyword(s):

Electron Microscopy ◽

Chemical Degradation ◽

Mechanical Resistance ◽

Control Groups ◽

Peroxide Bleaching ◽

Composite Restorations ◽

Etch And Rinse ◽

Electron Microscopy Analysis ◽

Microscopy Analysis ◽

Self Etch

SUMMARY The aim of this study was to determine the effect of peroxide bleaching on the marginal seal of composite restorations bonded with several adhesive systems. Combined cylindrical Class V cavities located half in enamel and half in dentin were prepared on the buccal and lingual surfaces of human molars. The cavities were bonded with the self-etch adhesives Clearfil SE-Bond (CLF), Adper Prompt (ADP), and iBond (IBO) and an etch-and-rinse adhesive Gluma Comfort Bond (GLU) and restored with a microhybrid composite Charisma. Experimental groups were treated 25 times for eight hours per day with a peroxide bleaching gel Opalescence PF 20, while the control groups were stored in distilled water for two months and then subjected to a microleakage test using a dye penetration method. Scanning electron microscopy was used to investigate the etching and penetration abilities of the adhesives and morphology of debonded restoration-enamel interfaces after the microleakage tests. Statistical analyses were performed using nonparametric Kruskal-Wallis, Mann-Whitney, and Wilcoxon tests at p=0.05. The microleakage of all GLU groups was low and not significantly affected by peroxide bleaching. Low microleakage was recorded for CLF control groups, but after bleaching, a small but significant increase in microleakage at the enamel margin indicated its sensitivity to peroxide bleaching. For ADP and IBO control groups, the microleakage at the enamel margins was significantly higher than for GLU and CLF and exceeded that at the dentin margins. Bleaching did not induce any significant changes in the microleakage. Electron microscopy analysis indicated that in our experimental setup, decreased adhesion and mechanical resistance of the ADP- and IBO-enamel interfaces could be more important than the chemical degradation effects induced by the peroxide bleaching gel.

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