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      • Record: found
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      Influence of Different Application Modes of a Universal Adhesive System on the Bond Strength of Bulk‐Fill Composite Resin to Enamel and Dentin in Primary Teeth

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          ABSTRACT

          Objectives

          The objective of this study was to assess how the application mode of a universal adhesive system affects the microshear bond strength (μSBS) of bulk‐fill and conventional composite resins to enamel and dentin in primary teeth.

          Methods

          A total of 80 caries‐free primary second molars were randomly assigned to eight experimental groups ( n = 10) based on the bonding substrate (enamel or dentin), the application mode of the universal adhesive system (etch and rinse [E&R], or self‐etch [SE]), and the type of composite resin used (bulk‐fill or conventional). After bonding the composite resin to enamel or dentin, the μSBS of the bonded composite resins was measured.

          Results

          The mean μSBS value of bulk‐fill composite resin was significantly higher than that of conventional composite resin for both enamel and dentin substrates, regardless of the application mode ( p < 0.001). An interaction effect between the bonding substrate and the application mode of the adhesive system was observed, indicating a significant relationship ( p < 0.001). The highest μSBS values for primary teeth enamel were achieved using the E&R mode with bulk‐fill composite resin, while for dentin specimens, the SE mode with bulk‐fill composite resin yielded the highest μSBS values. The μSBS of the E&R group was significantly higher than that of the SE group for enamel specimens ( p < 0.001), whereas the μSBS of the SE group was significantly higher than that of the E&R group for dentin specimens ( p < 0.001).

          Conclusion

          Bulk‐fill composite resin demonstrated higher μSBS in comparison to conventional composite resin. The universal adhesive system exhibited superior performance in the SE mode compared to the E&R mode on primary dentin. Pre‐etching the enamel before the application of the universal adhesive enhanced the μSBS to primary teeth enamel, highlighting the importance of selectively acid etching the enamel of primary teeth.

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          Most cited references38

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          State of the art of self-etch adhesives.

          J. Reuck, A Mine, Koen Van den Heede … (2010)
          This paper reflects on the state of the art of self-etch adhesives anno 2010. After presenting the general characteristics of self-etch adhesives, the major shortcomings of the most simple-to-use one-step (self-etch) adhesives are addressed. Special attention is devoted to the AD-concept and the benefit of chemical interfacial interaction with regard to bond durability. Finally, issues like the potential interference of surface smear and the more challenging bond to enamel for 'mild' self-etch adhesives are discussed. Copyright © 2010 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
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            Bulk-fill resin-based composites: an in vitro assessment of their mechanical performance.

            N Ilie, S Bucuta, M E Draenert (2024)
            The study aimed to assess the mechanical performance of seven bulk-fill RBCs (Venus Bulk Fill, Heraeus Kulzer; SureFil SDR flow, Dentsply Caulk; x-tra base and x-tra fil, VOCO; Filtek Bulk Fill, 3M ESPE; SonicFill, Kerr; Tetric EvoCeram Bulk Fill, Ivoclar Vivadent) by determining their flexural strength (σ), reliability (Weibull parameter, m), flexural modulus (Eflexural), indentation modulus (YHU), Vickers hardness (HV), and creep (Cr). The significant highest flexural strengths were measured for SonicFill, x-tra base, and x-tra fil, while x-tra base, SureFil SDR flow, and Venus Bulk Fill showed the best reliability. The differences among the materials became more evident in terms of Eflexural and YHU, with x-tra fil achieving the highest values, while Filtek Bulk Fill and Venus Bulk Fill achieved the lowest. The enlarged depth of cure in bulk-fill RBCs seems to have been realized by enhancing the materials' translucency through decreasing the filler amount and increasing the filler size. The manufacturer's recommendation to finish a bulk-fill RBC restoration by adding a capping layer made of regular RBCs is an imperative necessity, since the modulus of elasticity and hardness of certain materials (SureFil SDR flow, Venus Bulk Fill, and Filtek Bulk Fill) were considerably below the mean values measured in regular nanohybrid and microhybrid RBCs. The class of bulk-fill RBCs revealed similar flexural strength values as the class of nanohybrid and microhybrid RBCs, and significantly higher values when compared to flowable RBCs. The modulus of elasticity (Eflexural), the indentation modulus (YHU), and the Vickers hardness (HV) classify the bulk-fill RBCs as between the hybrid RBCs and the flowable RBCs; in terms of creep, bulk-fill and the flowable RBCs perform similarly, both showing a significantly lower creep resistance when compared to the nanohybrid and microhybrid RBCs.
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              Monomer conversion, microhardness, internal marginal adaptation, and shrinkage stress of bulk-fill resin composites.

              Bruna Fronza, Frederick Rueggeberg, Roberto Braga … (2015)
              To evaluate degree of conversion (DC), Knoop microhardness (KHN), internal marginal adaptation (IA), and polymerization shrinkage stress (PS) of one conventional and four bulk-fill composites.
              Article 0 comments Cited 67 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Zahra Jowkar:
                ORCID: http://orcid.org/0000-0003-4447-3670
                zahrajowkar66@gmail.com
                Journal
                Journal ID (nlm-ta): Clin Exp Dent Res
                Journal ID (iso-abbrev): Clin Exp Dent Res
                Journal ID (doi): 10.1002/(ISSN)2057-4347
                Journal ID (publisher-id): CRE2
                Title: Clinical and Experimental Dental Research
                Publisher: John Wiley and Sons Inc. (Hoboken )
                ISSN (Electronic): 2057-4347
                Publication date (Electronic): 28 August 2024
                Publication date Collection: August 2024
                Volume: 10
                Issue: 4 ( doiID: 10.1002/cre2.v10.4 )
                Electronic Location Identifier: e947
                Affiliations
                [ 1 ] Department of Pediatric Dentistry, School of Dentistry Shiraz University of Medical Sciences Shiraz Iran
                [ 2 ] Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry Shiraz University of Medical Sciences Shiraz Iran
                [ 3 ] Department of Operative Dentistry, School of Dentistry Shiraz University of Medical Sciences Shiraz Iran
                Author notes
                [*] [* ] Correspondence: Zahra Jowkar ( zahrajowkar66@ 123456gmail.com )

                Author information
                http://orcid.org/0000-0003-4447-3670
                Article
                Publisher ID: CRE2947
                DOI: 10.1002/cre2.947
                PMC ID: 11358215
                PubMed ID: 39205379
                SO-VID: 2683b830-84a8-4c1e-8fec-efe86e0ac1a4
                Copyright © © 2024 The Author(s). Clinical and Experimental Dental Research published by John Wiley & Sons Ltd.
                License:

                This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

                History
                Date revision received : 20 May 2024
                Date received : 16 December 2023
                Date accepted : 29 July 2024
                Page count
                Figures: 6, Tables: 3, Pages: 11, Words: 7347
                Funding
                Funded by: The authors received no specific funding for this work.
                Categories
                Subject: Original Article
                Subject: Original Article
                Custom metadata
                source-schema-version-number 2.0
                cover-date August 2024
                details-of-publishers-convertor Converter:WILEY_ML3GV2_TO_JATSPMC version:6.4.7 mode:remove_FC converted:29.08.2024

                Keywords: bulk‐fill composite resin,primary teeth,universal adhesive system
                Data availability:
                Keywords: bulk‐fill composite resin, primary teeth, universal adhesive system

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