Bulk-Fill Resins versus Conventional Resins: An Umbrella Review

Author:

Silva Gonçalo1,Marto Carlos Miguel123456ORCID,Amaro Inês12356,Coelho Ana12356ORCID,Sousa José12,Ferreira Manuel Marques23567ORCID,Francisco Inês23568ORCID,Vale Francisco23568ORCID,Oliveiros Bárbara23569ORCID,Carrilho Eunice12356ORCID,Paula Anabela Baptista123568ORCID

Affiliation:

1. Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal

2. Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE–MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal

3. Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal

4. Institute of Experimental Pathology, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal

5. Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal

6. Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal

7. Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal

8. Institute of Orthodontics, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal

9. Laboratory of Biostatistics and Medical Informatics (LBIM), Faculty of Medicine, University of Coimbra, 3004-531 Coimbra, Portugal

Abstract

Currently, composite resins have become the material of choice for the restoration of posterior teeth. Although bulk-fill resins represent a tempting alternative due to their lower complexity and faster use, some dentists are reluctant to use this material. The objective is to compare the performance of bulk-fill resins and conventional resins in direct restorations of posterior teeth based on the literature. The databases that were used to carry out the research were PubMed/MEDLINE, Embase, the Cochrane Library and the WOS. This umbrella literature review complies with PRISMA standards and assesses the quality of studies using the AMSTAR 2 tool. With the application of the criteria of the AMSTAR 2 tool, the reviews were considered low to moderate. The overall meta-analysis, although without statistical significance, favours mostly the use of conventional resin, as it is about five times more likely to obtain a favourable result than bulk-fill resin. Bulk-fill resins result in a simplification of the clinical process of posterior direct restorations, which is an advantage. The performance in terms of several properties of bulk-fill resins and conventional resins showed that they present similar behaviour.

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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