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de Carvalho MA, Lazari-Carvalho PC, Del Bel Cury AA, Magne P. Fatigue and failure analysis of restored endodontically treated maxillary incisors without a dowel or ferrule. J Prosthet Dent 2024; 131:241-250. [PMID: 35705432 DOI: 10.1016/j.prosdent.2021.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 11/17/2022]
Abstract
STATEMENT OF PROBLEM Information on the survival and mode of failure of endodontically treated incisors without a ferrule and restored without dowels is lacking. PURPOSE The purpose of this in vitro study was to compare the survival and failure mode of endodontically treated incisors without a ferrule and restored with bonded ceramic crowns and various composite resin foundation restorations without dowels with a control group with fiber dowels. MATERIAL AND METHODS Forty-five decoronated endodontically treated bovine incisors without ferrule were divided into 3 experimental groups and restored with different adhesive foundation restorations without dowel: nanohybrid composite resin (Nd), bulk-fill composite resin foundation restoration (NdB), and fiber-reinforced bulk-fill composite resin (NdFR). A control group with conventional foundation restorations (glass-fiber dowel with nanohybrid composite resin foundation restoration without ferrule) (D) was included for comparison. All teeth were prepared to receive bonded lithium disilicate ceramic crowns luted with dual-polymerizing composite resin cement and were subjected to accelerated fatigue testing. Cyclic isometric loading was applied to the incisal edge at an angle of 30 degrees and a frequency of 5 Hz, beginning with a load of 100 N (5000 cycles). A 100-N load increase was applied each 15 000 cycles. Specimens were loaded until failure or to a maximum for cycles endured of 1000 N (140 000 cycles). Groups were compared by using the Kaplan-Meier survival analysis (log rank test at α=.05 and pairwise post hoc comparisons) and life table analysis for load-at-failure (followed by Wilcoxon pairwise comparison α=.05). RESULTS All the specimens failed before 140 000 load cycles. Even though no statistically significant differences were found between the experimental groups without dowel (P>.127), the fiber-reinforced foundation restoration yielded the highest mean ±standard deviation cycles to failure (46 023 ±4326) compared with Nd (38 899 ±2975) and NdB (39 751 ±2998). NdFR, however, outperformed the foundation restoration with glass-fiber dowel (35 026 ±2687) (P<.05). Most failure in groups without dowel were restorable, while 100% of catastrophic failure (unrestorable) were found in the group with dowels. CONCLUSIONS Based on the present in vitro study, dowels did not improve the performance of the adhesive restoration of endodontically treated incisors without a ferrule. The use of a short fiber-reinforced composite resin foundation restoration without a dowel was able to not only improve the resistance of the restorations compared with adhesive foundation restorations with dowels but also minimize catastrophic failures.
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Affiliation(s)
- Marco Aurelio de Carvalho
- Professor, Department of Oral Rehabilitation, School of Dentistry, Evangelic University of Goias (UniEVANGÉLICA), Anápolis, GO, Brazil
| | - Priscilla Cardoso Lazari-Carvalho
- Professor, Department of Oral Rehabilitation, School of Dentistry, Evangelic University of Goias (UniEVANGÉLICA), Anápolis, GO, Brazil.
| | - Altair Antoninha Del Bel Cury
- Full Professor, Department of Prosthodontics and Periodontology, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, SP, Brazil
| | - Pascal Magne
- Tenured Associate Professor, Don & Sybil Harrington Foundation Professor of Esthetic Dentistry, Department of Restorative Sciences, The Herman Ostrow School of Dentistry, University of Southern California (USC), Los Angeles, Calif
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Fernandes JB, Contreras SM, da Silva Spinola M, Batista GR, Bresciani E, Caneppele TMF. Do bioactive materials show greater retention rates in restoring permanent teeth than non-bioactive materials? A systematic review and network meta-analysis of randomized controlled trials. Clin Oral Investig 2023; 28:44. [PMID: 38153565 DOI: 10.1007/s00784-023-05414-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/30/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVES To answer the following research question: does the clinical evaluation of restorations on permanent teeth with bioactive materials show greater retention rates than those with non-bioactive materials? MATERIALS AND METHODS A search strategy was used in the following databases: MEDLINE via PubMed, Scopus, Web of Science, LILACS, BBO, Embase, The Cochrane Library, and OpenGrey. Randomized controlled trials (RCTs), with a minimum of 2-year follow-up and evaluating at least one bioactive material in permanent teeth were included. Risk of bias was detected according to the Cochrane Collaboration tool for assessing the risk of bias (RoB 2.0), and network meta-analysis was performed using a random-effects Bayesian-mixed treatment comparison model. RESULTS Twenty-seven studies were included. The success of the restorations was assessed using modified USPHS system in 24 studies and the FDI criteria in 3 studies. Network meta-analysis revealed three networks based on restoration preparations. Resin composites were ranked with higher SUCRA values, indicating a greater likelihood of being the preferred treatment for class I, II, and III restorations. In class V, resin-modified glass ionomer cement was ranked with the highest value. CONCLUSION Bioactive restorative materials showed similar good clinical performance in terms of retention similarly to conventional resin composites. CLINICAL SIGNIFICANCE The findings must be interpreted with caution because many RCT on restorative materials aim to verify the equivalence of new materials over the gold standard material rather than their superiority. The present systematic review also suggests that new RCT with longer follow-up periods are necessary.
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Affiliation(s)
- Juliana Benace Fernandes
- Department of Restorative Dentistry, São Paulo State University - UNESP, Avenida Engenheiro Francisco José Longo, 777, São José Dos Campos, Brazil
| | - Sheila Mondragón Contreras
- Department of Restorative Dentistry, São Paulo State University - UNESP, Avenida Engenheiro Francisco José Longo, 777, São José Dos Campos, Brazil
| | | | - Graziela Ribeiro Batista
- A.T. Still University, Missouri School of Dentistry, 500 W Jefferson St, Kirksville, Missouri, USA
| | - Eduardo Bresciani
- Department of Restorative Dentistry, São Paulo State University - UNESP, Avenida Engenheiro Francisco José Longo, 777, São José Dos Campos, Brazil
| | - Taciana Marco Ferraz Caneppele
- Department of Restorative Dentistry, São Paulo State University - UNESP, Avenida Engenheiro Francisco José Longo, 777, São José Dos Campos, Brazil.
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Derigi LP, Barros LS, Sugii MM, Turssi CP, França F, Basting RT, Vieira WF. Effect of Commercial Mouth Rinses on Physical Properties of Conventional and Bulk-fill Resin Composites. Oper Dent 2023; 48:720-731. [PMID: 37881067 DOI: 10.2341/23-041-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2023] [Indexed: 10/27/2023]
Abstract
OBJECTIVE To evaluate the effects of commercial mouth rinses on color, roughness, sorption (SR), and solubility (SL) of resin composites. METHODS AND MATERIALS Disc-shaped specimens (stage I: 6 mm × 2 mm; stage II: 10 mm × 1.5 mm) were made from the following resin composites (n=10): conventional nanofilled (Filtek Z350XT, 3M Oral Care), conventional nanohybrid (Luna, SDI), bulk-fill nanofilled (Filtek One Bulk-Fill, 3M Oral Care), and bulk-fill nanohybrid (Aura Bulk-Fill, SDI) exposed to distilled water (control), blue mouth rinse without alcohol (Colgate Total 12 Clean Mint, Colgate-Palmolive), or blue mouth rinse with alcohol and essential oil (Listerine Tartar Control, Johnson & Johnson). In stage I, tests were performed at the baseline, and after the immersion in solution time points to evaluate coordinates of the CIEL*a*b* system (ΔL*, Δa*, Δb*), general color change (ΔEab, ΔE00, and ΔSGU), and surface roughness (Ra). In stage II, SR and SL were evaluated (ISO 4049:2019) after immersion in the solutions for 7 days. The results were evaluated by generalized linear models (Ra, SR), Kruskal-Wallis, and Dunn tests (color, SL), with α = 0.05. RESULTS There were no significative differences for Ra between the solutions. Both mouth rinses promoted significantly negative ΔL* (Luna), Δa* (Filtek One Bulk-fill), and Δb* (all materials except conventional nanofilled resin composite). Mouth rinse without alcohol promoted significantly negative Δa* on all resin composites tested. Both mouth rinses promoted higher ΔEab and ΔE00 for bulk-fill resin composites compared to control. Mouth rinse with alcohol caused higher ΔSGU for bulk-fill nanofilled resin composite. It also promoted greater SR in all the resin composites compared with mouth rinse without alcohol and higher SR in nanohybrid resin composites compared with control. Both mouth rinses promoted higher SL values in Luna and differed significantly from control. CONCLUSIONS The physical properties were manufacturer dependent and mediated by mouth rinses. The mouth rinses promoted color changes in the resin composites, pointing out that bulk-fill resin composites were more affected by these effects, especially when the mouth rinse contained essential oil and alcohol.
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Affiliation(s)
- L P Derigi
- Leonardo Pinheiro Derigi, MSc student, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - L S Barros
- Leonardo Santos Barros, MSc student, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - M M Sugii
- Mari Miura Sugii, DDS, MSc, PhD, professor, Groningen University Medical Center, University of Groningen, Groningen, Netherlands
| | - C P Turssi
- Cecilia Pedroso Turssi, DDS, MSc, PhD, professor, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - Fmg França
- Fabiana Mantovani Gomes França, DDS, MSc, PhD, professor, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - R T Basting
- Roberta Tarkany Basting, DDS, MSc, PhD, professor, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
| | - W F Vieira
- *Waldemir Francisco Vieira-Junior, DDS, MSc, PhD, professor, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil
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Alhussein A, Alsahafi R, Alfaifi A, Alenizy M, Ba-Armah I, Schneider A, Jabra-Rizk MA, Masri R, Garcia Fay G, Oates TW, Sun J, Weir MD, Xu HHK. Novel Remineralizing and Antibiofilm Low-Shrinkage-Stress Nanocomposites to Inhibit Salivary Biofilms and Protect Tooth Structures. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6770. [PMID: 37895752 PMCID: PMC10608551 DOI: 10.3390/ma16206770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/02/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023]
Abstract
Recurrent caries remain a persistent concern, often linked to microleakage and a lack of bioactivity in contemporary dental composites. Our study aims to address this issue by developing a low-shrinkage-stress nanocomposite with antibiofilm and remineralization capabilities, thus countering the progression of recurrent caries. In the present study, we formulated low-shrinkage-stress nanocomposites by combining triethylene glycol divinylbenzyl ether and urethane dimethacrylate, incorporating dimethylaminododecyl methacrylate (DMADDM), along with nanoparticles of calcium fluoride (nCaF2) and nanoparticles of amorphous calcium phosphate (NACP). The biofilm viability, biofilm metabolic activity, lactic acid production, and ion release were evaluated. The novel formulations containing 3% DMADDM exhibited a potent antibiofilm activity, exhibiting a 4-log reduction in the human salivary biofilm CFUs compared to controls (p < 0.001). Additionally, significant reductions were observed in biofilm biomass and lactic acid (p < 0.05). By integrating both 10% NACP and 10% nCaF2 into one formulation, efficient ion release was achieved, yielding concentrations of 3.02 ± 0.21 mmol/L for Ca, 0.5 ± 0.05 mmol/L for P, and 0.37 ± 0.01 mmol/L for F ions. The innovative mixture of DMADDM, NACP, and nCaF2 displayed strong antibiofilm effects on salivary biofilm while concomitantly releasing a significant amount of remineralizing ions. This nanocomposite is a promising dental material with antibiofilm and remineralization capacities, with the potential to reduce polymerization-related microleakage and recurrent caries.
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Affiliation(s)
- Abdullah Alhussein
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.)
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rashed Alsahafi
- Department of Restorative Dental Sciences, Umm Al-Qura University, College of Dentistry, Makkah 24211, Saudi Arabia
| | - Areej Alfaifi
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.)
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry King Saud bin Abdulaziz University for Health Sciences, Riyadh 14611, Saudi Arabia
| | - Mohammad Alenizy
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.)
| | - Ibrahim Ba-Armah
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.)
| | - Abraham Schneider
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Mary-Ann Jabra-Rizk
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Radi Masri
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Guadalupe Garcia Fay
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Thomas W. Oates
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Jirun Sun
- The Forsyth Institute, Harvard School of Dental Medicine Affiliate, Cambridge, MA 02142, USA
| | - Michael D. Weir
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hockin H. K. Xu
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Medina-Sotomayor P, Ortega G, Aguilar J, Ordóñez P, Rojas M, Vásquez R. Dental restoration operative time and analysis of the internal gap of conventional resins (Incremental Technique) vs. Bulk Fill (Single-Increment Technique): In vitro study. J Clin Exp Dent 2023; 15:e621-e628. [PMID: 37674607 PMCID: PMC10478196 DOI: 10.4317/jced.60717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/04/2023] [Indexed: 09/08/2023] Open
Abstract
Background To determine the operative time and the internal restoration gap in the restoration-tooth interface in the cavity floor using an incremental technique for conventional resins and the single-increment technique for the bulk fill resin. Material and Methods In this in vitro experimental study, the internal gaps of the restoration-tooth interfaces in the cavity floors of two conventional resins and two bulk fill resins were microscopically analyzed, and the restoration times of the single-increment technique and the incremental technique were determined. Results Bulk fill resins had smaller internal gap (63.31 µm) than conventional resins (333.14 µm). Regarding the restoration time, the single-increment technique obtained the best results in operative time (3.52 minutes), with significant differences relative to the incremental technique. Conclusions The Tetric N-Ceram bulk fill resin presented better performance than conventional resins relative to the internal gap of the restoration-tooth interface in the cavity floor. In addition, the single-increment technique presented a short clinical restoration time. Key words:Composite, internal gap, restoration technique.
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Affiliation(s)
| | - Gabriela Ortega
- Universidad Católica de Cuenca, Carrera de Odontología, Campus Universitario Azogues, Ecuador
| | - José Aguilar
- Universidad Católica de Cuenca, Carrera de Odontología, Campus Universitario Azogues, Ecuador
| | - Paola Ordóñez
- Universidad Católica de Cuenca, Carrera de Odontología, Campus Universitario Azogues, Ecuador
| | - Michelle Rojas
- Universidad Católica de Cuenca, Carrera de Odontología, Campus Universitario Azogues, Ecuador
| | - Roxana Vásquez
- Universidad Católica de Cuenca, Carrera de Odontología, Campus Universitario Azogues, Ecuador
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Alhussein A, Alsahafi R, Wang X, Mitwalli H, Filemban H, Hack GD, Oates TW, Sun J, Weir MD, Xu HHK. Novel Dental Low-Shrinkage-Stress Composite with Antibacterial Dimethylaminododecyl Methacrylate Monomer. J Funct Biomater 2023; 14:335. [PMID: 37504831 PMCID: PMC10381573 DOI: 10.3390/jfb14070335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/13/2023] [Accepted: 06/17/2023] [Indexed: 07/29/2023] Open
Abstract
OBJECTIVES Current dental resins exhibit polymerization shrinkage causing microleakage, which has the potential to cause recurrent caries. Our objectives were to create and characterize low-shrinkage-stress (LSS) composites with dimethylaminododecyl methacrylate (DMADDM) as an antibacterial agent to combat recurrent caries. METHODS Triethylene glycol divinylbenzyl ether and urethane dimethacrylate were used to reduce shrinkage stress. DMADDM was incorporated at different mass fractions (0%, 1.5%, 3%, and 5%). Flexural strength, elastic modulus, degree of conversion, polymerization stress, and antimicrobial activity were assessed. RESULTS The composite with 5% DMADDM demonstrated higher flexural strength than the commercial group (p < 0.05). The addition of DMADDM in BisGMA-TEGDMA resin and LSS resin achieved clinically acceptable degrees of conversion. However, LSS composites exhibited much lower polymerization shrinkage stress than BisGMA-TEGDMA composite groups (p < 0.05). The addition of 3% and 5% DMADDM showed a 6-log reduction in Streptococcus mutans (S. mutans) biofilm CFUs compared to commercial control (p < 0.001). Biofilm biomass and lactic acid were also substantially decreased via DMADDM (p < 0.05). CONCLUSIONS The novel LSS dental composite containing 3% DMADDM demonstrated potent antibacterial action against S. mutans biofilms and much lower polymerization shrinkage-stress, while maintaining excellent mechanical characteristics. The new composite is promising for dental applications to prevent secondary caries and increase restoration longevity.
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Affiliation(s)
- Abdullah Alhussein
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rashed Alsahafi
- Department of Restorative Dental Sciences, Umm Al-Qura University, College of Dentistry, Makkah 24211, Saudi Arabia
| | - Xiaohong Wang
- American Dental Association Science and Research Institute, LLC., Gaithersburg, MD 20899, USA
| | - Heba Mitwalli
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hanan Filemban
- Department of Operative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Gary D Hack
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Thomas W Oates
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Jirun Sun
- The Forsyth Institute, Harvard School of Dental Medicine Affiliate, Cambridge, MA 02142, USA
| | - Michael D Weir
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University Maryland School of Dentistry, Baltimore, MD 21201, USA
- The Forsyth Institute, Harvard School of Dental Medicine Affiliate, Cambridge, MA 02142, USA
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Silva G, Marto CM, Amaro I, Coelho A, Sousa J, Ferreira MM, Francisco I, Vale F, Oliveiros B, Carrilho E, Paula AB. Bulk-Fill Resins versus Conventional Resins: An Umbrella Review. Polymers (Basel) 2023; 15:2613. [PMID: 37376259 DOI: 10.3390/polym15122613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
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.
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Affiliation(s)
- Gonçalo Silva
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Carlos Miguel Marto
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute of Experimental Pathology, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
| | - Inês Amaro
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
| | - Ana Coelho
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
| | - José Sousa
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Manuel Marques Ferreira
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Inês Francisco
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
- Institute of Orthodontics, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Francisco Vale
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
- Institute of Orthodontics, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
| | - Bárbara Oliveiros
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
- Laboratory of Biostatistics and Medical Informatics (LBIM), Faculty of Medicine, University of Coimbra, 3004-531 Coimbra, Portugal
| | - Eunice Carrilho
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
| | - Anabela Baptista Paula
- Institute of Integrated Clinical Practice, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Laboratory for Evidence-Based Sciences and Precision Dentistry (LACBE-MDP), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3000-354 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotecnhology (CIBB), 3000-354 Coimbra, Portugal
- Institute of Orthodontics, Faculty of Medicine, University of Coimbra, 3000-354 Coimbra, Portugal
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Toz-Akalin T, Öztürk-Bozkurt F, Kusdemir M, Özsoy A, Yüzbaşıoğlu E, Özcan M. Clinical Evaluation of Low-shrinkage Bioactive Material Giomer Versus Nanohybrid Resin Composite Restorations: A Two-year Prospective Controlled Clinical Trial. Oper Dent 2023; 48:10-20. [PMID: 36508717 DOI: 10.2341/21-155-c] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2022] [Indexed: 12/14/2022]
Abstract
This study evaluated the clinical performance of low-shrinkage bioactive resin composite compared with a conventional nanohybrid resin composite. A total of 35 patients (18 males, 17 females; mean age: 29±9 years old) received, randomly, 35 pairs of fillings restored with either low-shrinkage bioactive material employing Giomer filler technology (Beautifil II LS, Shofu Inc, Kyoto, Japan) or conventional nanohybrid resin composite (Clearfil Majesty Posterior, Kuraray, Japan) in Class I and Class II cavities. Two operators made all the restorations using the corresponding adhesive resins: FL-Bond II (Shofu Inc) and Clearfil SE Bond (Kuraray), according to each manufacturer's instructions. Two calibrated operators evaluated the restorations two weeks after placement (baseline), at six months, and at one and two years using FDI criteria (Scores 1-5). Data were analyzed using the McNemar test (α=0.05). Mean observation time was 27.4 ± 4.1 months (min=20.8; max=33.7). In both groups, according to FDI criteria, the restorations were mostly rated with best scores (Score 1 or 2) for biological, functional, and optical parameters. For one filling in the group restored with nanohybrid resin composite, a small and localized secondary caries lesion was observed and monitored at the one- and two-year follow-ups. One restoration in the low-shrinkage Giomer restorative group was accepted as a failure due to retention loss. Over the two-year follow-up, both the Giomer and the nanohybrid resin composite restorations' performance was clinically acceptable.
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Affiliation(s)
- T Toz-Akalin
- *Tuğba Toz-Akalin, DDS, PhD, associate professor, Bahçeşehir University, School of Dental Medicine, Department of Restorative Dentistry, Istanbul, Turkey
| | - F Öztürk-Bozkurt
- Funda Öztürk-Bozkurt, DDS, PhD, associate professor, Istanbul Medipol University, School of Dentistry, Department of Restorative Dentistry, Istanbul, Turkey
| | - M Kusdemir
- Mahmut Kuşdemir, DDS, PhD, associate professor, Istanbul Medipol University, School of Dentistry, Department of Restorative Dentistry, Istanbul, Turkey
| | - A Özsoy
- Alev Özsoy, DDS, PhD, associate professor, Istanbul Medipol University, School of Dentistry, Department of Restorative Dentistry, Istanbul, Turkey
| | - E Yüzbaşıoğlu
- Emir Yüzbaşıoğlu, DDS, PhD, associate professor, Bahçeşehir University, School of Dental Medicine, Department of Prosthetic Dentistry, Istanbul, Turkey; School of Medicine and Health Sciences, BAU International University, Batumi, Georgia
| | - M Özcan
- Mutlu Özcan, Dr med dent, PhD, professor, University of Zurich, Center for Dental Medicine, Division of Dental Biomaterials, Clinic for Reconstructive Dentistry, Center of Dental Medicine, Zurich, Switzerland
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Gindri LD, Cassol IP, Fröhlich TT, Rocha RDO. One-year clinical evaluation of class II bulk-fill restorations in primary molars: a randomized clinical trial. Braz Dent J 2022; 33:110-120. [PMID: 36477958 PMCID: PMC9733372 DOI: 10.1590/0103-6440202205069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 10/13/2022] [Indexed: 12/12/2022] Open
Abstract
This double-blind, randomized clinical trial aimed to compare the clinical performance and clinical time to restore occluso-proximal cavities in primary molars withbulk-fillresin and conventional resin. A total of 140 class II restorations in primary molars of 65 participants (mean age of 6.7 + 1.5) were placed in two random groups:bulk-filland conventional resin. The restorations were evaluated using FDI criteria at the baseline, 6-month, and one year by a single calibrated examiner, and the clinical restorative time was measured with a digital timer. The success and survival of the restorations were evaluated with Kaplan-Meier graphs. The log-rank test compared the curves. Differences in restorative clinical time were compared using the Mann-Whitney U test. The level of significance was 5%. After one year, 115 restorations were evaluated. The success probability was 88.7% for Filtek Z350 XT and 85.9% for FiltekTM Bulk-fill, and for the survival probability, Filtek Z350 XT presented 90%, and FiltekTM Bulk-fill presented 93.7%. No significant difference was found between the success and survival curves (p=0.62), (p=0.51). The main reason for failure was marginal adaptation.Bulk-fillresin required 30% less time than the conventional resin (p<0.001).Bulk-fillresin presented similar clinical performance to the conventional resin and required less restorative clinical time. It is an option to restore class II lesions of primary molars.
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Arif W, Rana NF, Saleem I, Tanweer T, Khan MJ, Alshareef SA, Sheikh HM, Alaryani FS, AL-Kattan MO, Alatawi HA, Menaa F, Nadeem AY. Antibacterial Activity of Dental Composite with Ciprofloxacin Loaded Silver Nanoparticles. Molecules 2022; 27:7182. [PMID: 36364007 PMCID: PMC9658858 DOI: 10.3390/molecules27217182] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 08/26/2023] Open
Abstract
Resin composites have been widely used in dental restoration. However, polymerization shrinkage and resultant bacterial microleakage are major limitations that may lead to secondary caries. To overcome this, a new type of antibacterial resin composite containing ciprofloxacin-loaded silver nanoparticles (CIP-AgNPs) were synthesized. The chemical reduction approach successfully produced CIP-AgNPs, as demonstrated by FTIR, zeta potential, scanning electron microscopy, and ultraviolet-visible (UV-vis) spectroscopy. CIP-AgNPs were added to resin composites and the antibacterial activity of the dental composite discs were realized against Enterococcus faecalis, Streptococcus mutans, and the Saliva microcosm. The biocompatibility of modified resin composites was assessed and mechanical testing of modified dental composites was also performed. The results indicated that the antibacterial activity and compressive strength of resin composites containing CIP-AgNPs were enhanced compared to the control group. They were also biocompatible when compared to resin composites containing AgNPs. In short, these results established strong ground application for CIP-AgNP-modified dental composite resins.
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Affiliation(s)
- Wafa Arif
- Department of Biomedical Engineering and Sciences, School of Mechanical & Manufacturing Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
- Integrated Nanobiotechnology Laboratory, School of Interdisciplinary Engineering & Sciences (SINES), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Nosheen Fatima Rana
- Department of Biomedical Engineering and Sciences, School of Mechanical & Manufacturing Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
- Integrated Nanobiotechnology Laboratory, School of Interdisciplinary Engineering & Sciences (SINES), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Iqra Saleem
- Department of Biomedical Engineering and Sciences, School of Mechanical & Manufacturing Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
- Integrated Nanobiotechnology Laboratory, School of Interdisciplinary Engineering & Sciences (SINES), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Tahreem Tanweer
- Department of Biomedical Engineering and Sciences, School of Mechanical & Manufacturing Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
- Integrated Nanobiotechnology Laboratory, School of Interdisciplinary Engineering & Sciences (SINES), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Muhammad Jawad Khan
- Department of Robotics & Artificial Intelligence, School of Mechanical & Manufacturing Engineering, National University of Science & Technology, Islamabad 44000, Pakistan
| | | | - Huda M. Sheikh
- Department of Biology, College of Science, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Fatima S. Alaryani
- Department of Biology, College of Science, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Manal Othman AL-Kattan
- Department of Biology, College of Science, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Hanan Ali Alatawi
- Department of Biological Sciences, University College of Haqel, Tabuk University, Tabuk 71491, Saudi Arabia
| | - Farid Menaa
- Internal Medicine and Nanomedicine, California Innovations Corporation, San Diego, CA 92037, USA
| | - Aroosa Younis Nadeem
- Department of Biomedical Engineering and Sciences, School of Mechanical & Manufacturing Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
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Zenkner-Neto AW, Vieira-Junior WF, Amaral FL, França FM, Basting RT, Turssi CP. Bulk-fill restorative composites under simulated carious and erosive conditions. ACTA ODONTOLOGICA LATINOAMERICANA : AOL 2022; 35:111-119. [PMID: 36260942 DOI: 10.54589/aol.35/2/111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 04/01/2022] [Indexed: 06/16/2023]
Abstract
Acidic conditions can cause hydrolysis and accelerate degradation of resin composites (RCs). Since there are limited and controversial data on the effect of acids on bulk-fill RCs, this study assessed the surface roughness (SR) and flexural strength (FS) of these RCs under simulated carious and erosion conditions. Bars of Filtek Bulk Fill (FBF, 3M/ESPE), X-tra fil (XTF, Voco), Tetric N-Ceram Bulk Fill (TBF, Ivoclar/Vivadent), and Aura Bulk Fill (ABF, SDI) and a conventional RC [Filtek Z350XT (FZ, 3M/ESPE)] were allocated (n=15) to undergo caries or erosion conditions. The control group was kept in artificial saliva (AS). The bars were evaluated for SR change (final-baseline) and for three-point FS. Data were analyzed using ANOVA and Tukey's test. At the baseline (p <0.001), the SR of RCs ranked as follows: (TBF = XTF) < FBF (none differed from FZ) < ABF. The interplay between RCs and conditions affected SR change (p = 0.025). While after storage in AS, there was no difference among RCs, following carious and erosive conditions, ABF showed higher SR change. For FS (p <0.001), XTF > (FBF = FZ) > (TBF = FZ) > ABF, with no difference among control, carious and erosive conditions (p = 0.148). Depending on the restorative bulk-fill RCs, carious and erosive conditions roughen the surface but do not affect the FS of these materials.
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Affiliation(s)
- Alfredo W Zenkner-Neto
- Faculdade São Leopoldo Mandic, Divisão de Cariologia e Odontologia Restauradora, Campinas, Brazil
| | - Waldemir F Vieira-Junior
- Faculdade São Leopoldo Mandic, Divisão de Cariologia e Odontologia Restauradora, Campinas, Brazil
| | - Flávia Lb Amaral
- Faculdade São Leopoldo Mandic, Divisão de Cariologia e Odontologia Restauradora, Campinas, Brazil
| | - Fabiana Mg França
- Faculdade São Leopoldo Mandic, Divisão de Cariologia e Odontologia Restauradora, Campinas, Brazil
| | - Roberta T Basting
- Faculdade São Leopoldo Mandic, Divisão de Cariologia e Odontologia Restauradora, Campinas, Brazil
| | - Cecilia P Turssi
- Faculdade São Leopoldo Mandic, Divisão de Cariologia e Odontologia Restauradora, Campinas, Brazil.
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Vertuan M, Mosquim V, Guimarães GMDF, Obeid AT, Bombonatti JFS, Ishikiriama SK, Furuse AY. The stamp technique for direct restoration in a ICDAS 4 carious lesion: A 4-year follow-up. J ESTHET RESTOR DENT 2022; 35:442-448. [PMID: 36161755 DOI: 10.1111/jerd.12963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVE This case report described the use of a stamping technique associated with a bulk fill composite to restore an ICDAS 4 carious lesion on a posterior tooth. The 4-year follow-up is also presented. CLINICAL CONSIDERATIONS A 32-year-old patient presented a carious lesion on tooth 36 with an underlying dark shadow at the dentin seen from the noncavitated enamel occlusal surface, which was compatible with an ICDAS 4 carious lesion. The lesion was radiographically detected and the caries disease was treated with dietary and hygiene habits orientations. Before accessing the lesion and selectively removing the carious tissue, an occlusal stamp was made by applying a flowable resin composite to copy the anatomy of the noncavitated enamel surface. The cavity was restored using a bulk fill resin composite (Opus Bulk Fill, FGM) with 4-mm-thick increments. Before curing the last increment, a Teflon band was adapted at the uncured bulk fill composite surface and the occlusal stamp made with the flowable composite was pressed against it to reproduce the natural characteristics and initial occlusal anatomy. The top surface was light-activated for 40 s. After 4 years, small wear could be seen in the restoration, but still within clinically acceptable levels. CONCLUSION The occlusal stamp technique allows reproduction of the natural anatomy of teeth affected by ICDAS 4 carious lesions with good clinical longevity over 4 years. CLINICAL SIGNIFICANCE This case report presents the use of the stamp technique to restore a tooth affected by an ICDAS 4 lesion, in which a carious process reached the dentin and the enamel anatomy was still preserved. The bulk fill resin composite associated with the occlusal stamp was chosen to quickly restore the cavity with clinical predictability. Bulk fill composites allow the insertion of up to 4-mm-thick increments and offer lower shrinkage stress, good clinical longevity and a less time-consuming procedure in cases of posterior teeth, especially if associated with the stamp technique.
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Affiliation(s)
- Mariele Vertuan
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
| | - Victor Mosquim
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
| | - Genine Moreira de Freitas Guimarães
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
| | - Alyssa Teixeira Obeid
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
| | - Juliana Fraga Soares Bombonatti
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
| | - Sergio Kiyoshi Ishikiriama
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
| | - Adilson Yoshio Furuse
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB-USP), Bauru, Brazil
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13
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Kölüş T, Uçar AY. A Systematic Review and Meta-Analysis of the Success of Resin Composite Restorations. JOURNAL OF ADVANCED ORAL RESEARCH 2022. [DOI: 10.1177/23202068221114979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aim: This review examines the studies on resin composites within the past decade and evaluates the materials’ application methods and success through Fédération Dentaire Internationale (FDI) scores. Materials and Methods: Search results from three databases (a total of 3295 studies) were transferred to Mendeley Desktop (Mendeley, London, UK) software and deduplicated (2638 studies). Eight studies were included in this meta-analysis after scanning the title, abstract, and full-text screening. Risk of bias analysis was performed using the Cochrane Handbook tool. Shapiro–Wilk, Kolmogorov–Smirnov, Kruskal–Wallis, and post hoc Tamhane’s T2 were used for statistical analysis. Results: Conventional composite’s surface staining FDI score was higher than flowable and silorane composites (no difference between these two). Also, conventional composite has the highest score in terms of staining. Conventional composite + two-step self-etch adhesive and bulk fill composite + two-step self-etch adhesive have lower FDI scores in marginal staining. In noncarious cervical lesions (NCCL), conventional composite + two-step total-etch adhesive has a higher score than flowable composite + two-step self-etch adhesive. Flowable composite + two-step self-etch adhesive and conventional composite + single-step self-etch adhesive have the highest FDI scores for marginal adaptation (no statistical difference between them). Conventional composite + two-step self-etch adhesive and bulk fill composite + two-step self-etch have the lowest scores (no statistical difference between them). For recurrence of caries, all groups have Score 1, the best score, and there is no significant difference between them. Conclusions: Each restorative material and adhesive system has different advantages, and the practitioner must choose the most appropriate.
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Affiliation(s)
- Türkay Kölüş
- Department of Restorative Dentistry, Faculty of Dentistry, Karamanog˘lu Mehmetbey University, Karaman, Merkez/Karaman, Turkey
| | - Arzu Yağmur Uçar
- Dentistry Department of Endodontics, Faculty of Dentistry, Selçuk University, Konya, Turkey
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Endo Hoshino IA, Fraga Briso AL, Bueno Esteves LM, Dos Santos PH, Meira Borghi Frascino S, Fagundes TC. Randomized prospective clinical trial of class II restorations using flowable bulk-fill resin composites: 4-year follow-up. Clin Oral Investig 2022; 26:5697-5710. [PMID: 35556174 DOI: 10.1007/s00784-022-04526-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 04/29/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVES This randomized, prospective, and split-mouth study aimed to evaluate flowable bulk-fill resin composites in class II restorations, comparing it with a conventional layering technique after 4-year follow-up. MATERIALS AND METHODS Fifty-three subjects received three class II restorations according to the restorative systems: conventional microhybrid composite resin (PA - Peak Universal + Amelogen Plus, Ultradent); flowable bulk-fill and nanoparticulate composite resins (ABF - Adper Single Bond 2 + Filtek Bulk Fill Flow + Filtek Z350XT, 3M/Espe); and flowable bulk-fill and microhybrid composite resins, (XST - XP Bond + SDR + TPH3, Dentsply). The clinical performance and interproximal contacts were evaluated. Statistical analyses were performed using the Kaplan-Meier, equality test of two proportions, Friedman, Wilcoxon, Kruskal-Wallis, Mann-Whitney, and Logistic regression analysis tests (alpha = 0.05). RESULTS In total, 106 restorations were evaluated at 4 years. Both systems with bulk-fill composites presented higher marginal discoloration than PA. About surface texture, ABF restorative system showed superior bravo scores being statistically similar to XST. Better performance for wear and surface staining was found for XST restorative system. All restorative systems resulted in the decreased interproximal contacts, occurring early for XST. CONCLUSIONS The restorative systems that used flowable bulk-fill resin composites showed satisfactory clinical performance compared with conventional resin composite after 4 years. All restorative systems had decreased proximal contact after 4 years. CLINICAL RELEVANCE Initial marginal discoloration was observed in more than 50% of class II restorations performed with restorative systems that used flowable bulk-fill resin composite. All restorative systems had decreased proximal contact strength over time.
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Affiliation(s)
- Isis Almela Endo Hoshino
- Department of Preventive and Restorative Dentistry, School of Dentistry Araçatuba, São Paulo State University (UNESP), José Bonifácio, Araçatuba, São Paulo, Vila Mendonça, 1193, Brazil
| | - André Luiz Fraga Briso
- Department of Preventive and Restorative Dentistry, School of Dentistry Araçatuba, São Paulo State University (UNESP), José Bonifácio, Araçatuba, São Paulo, Vila Mendonça, 1193, Brazil
| | - Lara Maria Bueno Esteves
- Department of Preventive and Restorative Dentistry, School of Dentistry Araçatuba, São Paulo State University (UNESP), José Bonifácio, Araçatuba, São Paulo, Vila Mendonça, 1193, Brazil
| | - Paulo Henrique Dos Santos
- Department of Dental Materials and Prosthodontics, School of Dentistry Araçatuba, São Paulo State University (UNESP), José Bonifácio, Araçatuba, São Paulo, Vila Mendonça, 1193, Brazil
| | - Sandra Meira Borghi Frascino
- Department of Preventive and Restorative Dentistry, School of Dentistry Araçatuba, São Paulo State University (UNESP), José Bonifácio, Araçatuba, São Paulo, Vila Mendonça, 1193, Brazil
| | - Ticiane Cestari Fagundes
- Department of Preventive and Restorative Dentistry, School of Dentistry Araçatuba, São Paulo State University (UNESP), José Bonifácio, Araçatuba, São Paulo, Vila Mendonça, 1193, Brazil.
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Kasraei S, Haghi S, Farzad A, Malek M, Nejadkarimi S. Comparative of flexural strength, hardness, and fluoride release of two bioactive restorative materials with RMGI and composite resin. BRAZILIAN JOURNAL OF ORAL SCIENCES 2022. [DOI: 10.20396/bjos.v21i00.8665263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aim: This study was fulfilled to evaluate the flexural strength, micro-hardness, and release of two fluoride ions of bioactive restorative materials (Cention N and Activa Bioactive), a resin modified glass ionomer (Fuji II LC), and a resin composite (Filtek z250). Methods: Forty samples from four restorative materials (Activa Bioactive, Fuji II LC, Cention N, and Filtek Z250) were provided according to the current standards of ISO 4049/2000 guide lines. Subsequently, the samples were stored for 24 hours and 6 months in artificial saliva, and successively, flexural strength and micro-hardness of the samples were measured. For each studied groups the pH was decreased from 6.8 to 4 in storage solution. The rate of changes in fluoride ion release was measured after three different storage periods of 24 hours, 48 hours, and 6 months in distilled water, according to the previous studies’ method. Two-way ANOVA, One-way ANOVA, Tukey HSD Pair wise comparisons, and independent t-tests were used to analyze data (α= 0.05). Results: The highest flexural strength and surface micro-hardness after 24 hours and also after 6 month were observed for Cention N(p<0.001).Flexural strength of all samples stored for 6 months was significantly lower than the samples stored for 24 hours(p<0.001). The accumulative amount of the released fluoride ion in RMGI, after six-month storage period in distilled water was considerably higher (p<0.001) than 24 hours and 48 hours storage. The amount of fluoride ion release with increasing acidity of the environment (from pH 6.8 to 4) in Fuji II LC glass ionomer was higher than the bioactive materials (p<0.05). Conclusion: The flexural strength of RMGI was increased after storage against the Activa Bioactive,Cention N and Z250 composite. Storage of restorative materials in artificial saliva leads to a significant reduction in micro hardness. The behavior and amount of released fluoride ions in these restorative materials, which are stored in an acidic environment, were dependent on the type of restorative material.
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16
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Go YR, Kim KM, Park SH. Influence of inhomogeneity of the polymerization light beam on the microhardness of resin cement under a CAD-CAM block. J Prosthet Dent 2022; 127:802.e1-802.e10. [PMID: 35272842 DOI: 10.1016/j.prosdent.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/03/2022] [Accepted: 02/03/2022] [Indexed: 11/30/2022]
Abstract
STATEMENT OF PROBLEM The beam profile of a light polymerization unit shows an inhomogeneous distribution. Therefore, the light passing through indirect restorations may be inhomogeneous and affect the polymerization of the resin cement. PURPOSE The purpose of this in vitro study was to investigate the effects of the inhomogeneous distribution of irradiance passing through a computer-aided design and computer-aided manufacturing (CAD-CAM) block on the microhardness of resin cement. MATERIAL AND METHODS IPS e.max CAD (A3 LT, A3 HT), Celtra Duo (A3 LT), LAVA Ultimate (A3 LT), and Vita Enamic (A3 T) blocks were tested and cut into 1.0-, 1.5-, 2.0-, and 4.0-mm thicknesses (N=100). The resin cements were Variolink N base (light-polymerized) and RelyX U200 (dual-polymerized). The light transmission, irradiance, and beam profile of each block were measured. For microhardness measurement, 5 points (-4 mm, -2 mm, 0 mm, +2 mm, and +4 mm) that coincided with the distance from the center to the periphery of the tip were marked on the specimen's surface. At each point, microhardness was measured 24 hours after polymerization. Repeated measured 1-way ANOVA with the LSD test was performed to analyze the effect of measuring points on the microhardness (α=.05). RESULTS The microhardness of the resin cements decreased with an increase of the CAD-CAM block thickness (P<.05). Resin cements under a 1-mm CAD-CAM block showed relatively uniform microhardness, whereas those under 2-mm and 4-mm blocks showed inhomogeneous microhardness (P<.05). CONCLUSIONS Inhomogeneous light transmission from a light polymerization unit through CAD-CAM blocks resulted in the nonuniform microhardness of resin cement.
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Affiliation(s)
- Yu-Ra Go
- Post graduate student, Department of Conservative of Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea; Resident, Department of Conservative Dentistry, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Kwang-Man Kim
- Professor, Department and research Institute of Dental Biomaterials & Bioengineering, BK21 Project, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Sung-Ho Park
- Professor, Department of Conservative of Dentistry and Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Republic of Korea.
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Santos MHD, Santos LRD, Alves LNS, Moura HS, Carvalho MMSGD, Lins RBE. Do Bulk-Fill Resin Composites Present More Susceptibility to Marginal Degradation in Different Clinical Scenarios? A Systematic Review and Meta-Analysis. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2022. [DOI: 10.1590/pboci.2022.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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18
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Balbinot GDS, Celeste RK, Leitune VCB, Collares FM. Implementation in restorative treatments in public health: a 10-year analysis of resin composite procurement in Brazil. CAD SAUDE PUBLICA 2022; 38:e00118321. [DOI: 10.1590/0102-311x00118321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 11/04/2021] [Indexed: 11/22/2022] Open
Abstract
This study aims to assess the resin composite purchases in a public health system and understand the variables associated with its cost and with the decision-making process over a period of 10 years. Secondary data collection was performed using the Brazilian Healthcare Prices Database (BDHP) from 2010 to 2019. All conventional and bulk-fill composites were selected. Date of purchase, institution type and location, procurement modality, number of purchased items, manufacture, and unit prices were collected. A multiple linear regression model assessed the influence of price in the procurement variables, while a multinomial logistic regression compared purchase probabilities between the materials. In total, 18,138 observations were collected with 2,129,294 purchased units and a total cost of USD 43,504,260.00. Conventional composites appeared in 98.5% of the procurement process. Nanofilled conventional composites were the most purchased materials, with an increased probability of purchase over time, despite its higher prices. An increase in prices was predicted for bulk-fill materials when compared to conventional ones. The odds of purchasing this category increased by 3.14x for every price increase over the years. Sociodemographic and type of institution influences the prices and the probability of procurement in the healthcare system. Nanofilled and bulk-fill resin are increasingly included in clinical practice. These findings highlight possible modifications to the standard-of-care in restorative treatments and how the translation of knowledge may occur from the development of new materials to the clinical application considering the economic impact of these modifications.
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Albeshir EG, Balhaddad AA, Mitwalli H, Wang X, Sun J, Melo MAS, Weir MD, Xu HHK. Minimally-invasive dentistry via dual-function novel bioactive low-shrinkage-stress flowable nanocomposites. Dent Mater 2021; 38:409-420. [PMID: 34973816 DOI: 10.1016/j.dental.2021.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/28/2021] [Accepted: 12/15/2021] [Indexed: 01/05/2023]
Abstract
The objectives of this in vitro study were to develop a novel low-shrinkage-stress flowable nanocomposite with antibacterial properties through the incorporation of dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP), and investigate the mechanical and oral biofilm properties, to be used in minimally-invasive techniques. METHODS The light-cured low-shrinkage-stress flowable resin was formulated by mixing urethane dimethacrylate (UDMA) and triethylene glycol divinylbenzyl ether (TEG-DVBE) at a 1:1 mass ratio. Different mass fractions of glass, and either 5% DMAHDM or 20%NACP or both were incorporated. Paste flowability, ultimate micro tensile strength and surface roughness were evaluated. The antibacterial response of DMAHDM resin was assessed by using biofilms of human saliva-derived microcosm model. Virtuoso flowable composite was used as a control. RESULTS (45% resin+5% DMAHDM+20% NACP+30% glass) formula yielded the needed outcomes. It had flow rate within the range of ISO requirement. The micro tensile strength was (39.1 ± 4.3) MPa, similar to (40.1 ± 4.0) MPa for commercial control (p > 0.05). The surface roughness values of the novel composite (0.079 ± 0.01) µm similar to commercial composite (0.09 ± 0.02) µm (p > 0.05). Salivary microcosm biofilm colony forming unit values were reduced by 5-6 logs (p < 0.05). Biofilm metabolic activity was also substantially reduced, compared to control composite (p < 0.05). SIGNIFICANCE The novel bioactive flowable nanocomposite achieved strong antibacterial activities without compromising the mechanical properties. It is promising to be used as pit and fissure sealants, and as fillings in conservative cavities to inhibit recurrent caries and increase restoration longevity.
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Affiliation(s)
- Ebtehal G Albeshir
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dentistry, King Abdul-Aziz Medical City, Riyadh 11426, Saudi Arabia.
| | - Abdulrahman A Balhaddad
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 31441, Saudi Arabia.
| | - Heba Mitwalli
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Xiaohong Wang
- Volpe Research Center, American Dental Association Foundation, Frederick, MD 21704, USA
| | - Jirun Sun
- The Forsyth Institute, A Harvard School of Dental Medicine Affiliate, 245 First Street, Cambridge, MA 02142, USA.
| | - Mary Ann S Melo
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA.
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Filemban H, Bhadila G, Wang X, Melo MAS, Oates TW, Weir MD, Sun J, Xu HH. Novel low-shrinkage-stress bioactive nanocomposite with anti-biofilm and remineralization capabilities to inhibit caries. J Dent Sci 2021; 17:811-821. [PMID: 35756812 PMCID: PMC9201927 DOI: 10.1016/j.jds.2021.09.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/23/2021] [Indexed: 11/19/2022] Open
Abstract
Background/purpose A common reason for dental composite restoration failure is recurrent caries at the margins. Our objectives were to: (1) develop a novel low-shrinkage-stress, antibacterial and remineralizing resin composite; (2) evaluate the effects of dimethylaminohexadecyl methacrylate (DMAHDM) on mechanical properties, biofilm inhibition, calcium (Ca) and phosphate (P) ion release, degree of conversion, and shrinkage stress on the new low-shrinkage-stress resin composite for the first time. Material and methods The resin consisted of urethane dimethacrylate (UDMA) and triethylene glycol divinylbenzyl ether (TEG-DVBE) with high resistance to salivary hydrolytic degradation. Composites were made with 0%–8% of DMAHDM for antibacterial activity, and 20% of nanoparticles of amorphous calcium phosphate (NACP) for remineralization. Mechanical properties and Streptococcus mutans biofilm growth on composites were assessed. Ca and P ion releases, degree of conversion and shrinkage stress were evaluated. Results Adding 2–5% DMAHDM and 20% NACP into the low-shrinkage-stress composite did not compromise the mechanical properties (p > 0.05). The incorporation of DMAHDM greatly reduced S. mutans biofilm colony-forming units by 2–5 log and lactic acid production by 7 folds, compared to a commercial composite (p < 0.05). Adding 5% DMAHDM did not compromise the Ca and P ion release. The low-shrinkage-stress composite maintained a high degree of conversion of approximately 70%, while reducing the shrinkage stress by 37%, compared to a commercial control (p < 0.05). Conclusion The bioactive low-shrinkage-stress composite reduced the polymerization shrinkage stress, without compromising other properties. Increasing the DMAHDM content increased the antibacterial effect in a dose-dependent manner.
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Affiliation(s)
- Hanan Filemban
- Ph.D. Program in Dental Biomedical Sciences, Biomaterials and Tissue Engineering Division, University of Maryland School of Dentistry, Baltimore, USA
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, USA
- Department of Operative Dentistry, King AbdulAziz University, Jeddah, Saudi Arabia
| | - Ghalia Bhadila
- Department of Pediatric Dentistry, King AbdulAziz University, Jeddah, Saudi Arabia
- Corresponding author.
| | - Xiaohong Wang
- American Dental Association Science and Research Institute, LLC., Gaithersburg, USA
| | - Mary Ann S. Melo
- Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, USA
| | - Thomas W. Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, USA
| | - Michael D. Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, USA
- Corresponding author. Biomaterials & Tissue Engineering Division. Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, 21201, MD, USA.
| | - Jirun Sun
- The Forsyth Institute, Harvard School of Dental Medicine Affiliate, Cambridge, USA
- Corresponding author. The Forsyth Institute, Harvard School of Dental Medicine Affiliate, 245 First Street, Cambridge, 02142, MA, USA.
| | - Hockin H.K. Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, USA
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, USA
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Moda MD, Briso AF, Hoshino I, Frascino S, Santos PH, Gonçalves DM, Fagundes TC. Three-year Randomized Prospective Clinical Trial of Class II Restorations Using Flowable Bulk-fill Resin Composites. Oper Dent 2021; 46:516-528. [PMID: 34520538 DOI: 10.2341/20-031-c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVES This randomized, prospective, and split-mouth study aimed to evaluate flowable bulk-fill resin composites in class II restorations and to compare with a conventional layering technique after a 3-year follow-up. METHODS AND MATERIALS Fifty-three subjects received three class II restorations according to the restorative systems: conventional microhybrid resin composite (PA, Peak Universal + Amelogen Plus, Ultradent), flowable bulk-fill and nanoparticulate resin composites (ABF, Adper Single Bond 2 + Filtek Bulk Fill Flow + Filtek Z350XT, 3M Oral Care), and flowable bulk-fill and microhybrid resin composites (XST, XP Bond + SDR + TPH3, Dentsply). The clinical performance and interproximal contacts were evaluated. Statistical analyses were performed using the equality test of two proportions, Logistic regression analysis, Friedman, Wilcoxon, Kruskal-Wallis, and Mann-Whitney tests (α=0.05). RESULTS Forty-seven patients were evaluated at 3 years. XST bulk-fill restorative system presented higher marginal discoloration than PA, and the opposite occurred for surface staining. All restorative systems resulted in decreased interproximal contacts, occurring early for XST. CONCLUSIONS Although the restorative system using incremental technique presented better performance for marginal discoloration, one of the restorative systems that used flowable bulk-fill resin composite (XST) showed the lowest surface staining. All restorative systems had decreased proximal contact over time.
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Affiliation(s)
- M D Moda
- Mariana Dias Moda, DDS, MS, PhD, Department of Preventive and Restorative Dentistry, São Paulo State University, School of Dentistry, Araçatuba
| | - A F Briso
- André Fraga Briso, DDS, MS, PhD, associate professor; Department of Preventive and Restorative Dentistry, São Paulo State University, School of Dentistry, Araçatuba
| | - Iae Hoshino
- Isis Almela Endo Hoshino, DDS, MS, PhD student, Department of Preventive and Restorative Dentistry, São Paulo State University, School of Dentistry, Araçatuba
| | - Smb Frascino
- Sandra Meira Borghi Frascino, DDS, MS, Department of Preventive and Restorative Dentistry, São Paulo State University, School of Dentistry, Araçatuba
| | - P H Santos
- Paulo Henrique dos Santos, DDS, MS, PhD, associate professor, Department of Dental Materials and Prosthodontics, São Paulo State University, School of Dentistry, Araçatuba
| | - D M Gonçalves
- Diego Mardegan Gonçalves, DDS, MS student, Department of Preventive and Restorative Dentistry, São Paulo State University, School of Dentistry, Araçatuba
| | - T C Fagundes
- *Ticiane Cestari Fagundes, DDS, MS, PhD, assistant professor; Department of Preventive and Restorative Dentistry, São Paulo State University, School of Dentistry, Araçatuba
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Rechmann P, Le CQ, Chaffee BW, Rechmann BMT. Demineralization prevention with a new antibacterial restorative composite containing QASi nanoparticles: an in situ study. Clin Oral Investig 2021; 25:5293-5305. [PMID: 33608748 PMCID: PMC7895509 DOI: 10.1007/s00784-021-03837-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 02/09/2021] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To investigate whether a newly developed dental composite with quaternary ammonium silica dioxide (QASi) nanoparticles incorporated with other fillers into the restorative material demonstrates antibacterial activity by reducing enamel demineralization in an in situ gap model. MATERIALS AND METHODS Twenty subjects wearing a lower removable partial denture (RPD) with acrylic flanges on both sides of the mouth were recruited into the 4-week in situ study. The gap model consisted of an enamel slab placed next to a composite, separated by a 38-μm space. In the split-mouth design on one side of the RPD, the composite was the Nobio Infinix composite (Nobio Ltd., Kadima, Israel), and the contralateral side used a control composite. Each participant received enamel slabs from one tooth. The gap model was recessed into the RPD buccal flange, allowing microbial plaque to accumulate within the gap. After 4 weeks of continuous wearing, decalcification (∆Z mineral loss) of the enamel slabs adjacent to the gap was determined by cross-sectional microhardness testing in the laboratory. RESULTS The ∆Z for the antibacterial composite test side was 235±354 (mean±standard deviation [SD]; data reported from 17 participants) and statistically significantly lower compared to ∆Z of the control side (774±556; mean±SD) (paired t-test, P<0.0001; mean of test minus control -539 (SD=392), 95% confidence interval of difference: -741, -338). CONCLUSIONS This in situ clinical study showed that composites with QASi antibacterial particles significantly reduced demineralization in enamel adjacent to a 38-μm gap over a 4-week period in comparison to a conventional composite. CLINICAL RELEVANCE Composites with QASi nanoparticle technology have the potential to reduce the occurrence of secondary caries. TRIAL REGISTRATION ClinicalTrials.gov #NCT04059250.
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Affiliation(s)
- Peter Rechmann
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, 707 Parnassus Avenue, San Francisco, CA, 94143, USA.
| | - Charles Q Le
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, 707 Parnassus Avenue, San Francisco, CA, 94143, USA
| | - Benjamin W Chaffee
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, 707 Parnassus Avenue, San Francisco, CA, 94143, USA
| | - Beate M T Rechmann
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, 707 Parnassus Avenue, San Francisco, CA, 94143, USA
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23
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Kaisarly D, ElGezawi M, Haridy R, Elembaby A, Aldegheishem A, Alsheikh R, Almulhim KS. Reliability of Class II Bulk-fill Composite Restorations With and Without Veneering: A Two-year Randomized Clinical Control Study. Oper Dent 2021; 46:491-504. [PMID: 35486510 DOI: 10.2341/19-290-c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2020] [Indexed: 11/23/2022]
Abstract
Bulk-fill composites are increasingly used in stress-bearing areas in posterior teeth, with a diversity of reports concerning their effectiveness and clinical reliability. The objective of this randomized clinical control study was to investigate the effectiveness of bulk-fill versus veneered bulk-fill Class II composite restorations. A double-blind split-mouth technique was employed in 80 subjects recruited for restoring Class II caries in one molar bilaterally in the same arch following respective inclusion and exclusion criteria and after obtaining written consent. While one molar was randomly restored with bulk-fill composite using the sealed-envelope technique, Tetric N-Ceram Bulk Fill (TBF), the contralateral was restored with a bulk-fill composite veneered with an increment of a heavy-body microhybrid composite-Tetric-Ceram HB (TBF/V). Box-only cavities were prepared and received etch-and-rinse adhesive bonding and Tetric N-Bond treatment before composite insertion. Restorations were assessed at 24 hours, 2 weeks, 6 months, 12 months, and 24 months for esthetic, functional, and biological quality employing the FDI ranking criteria. Friedman repeated-measures analysis of variance, the McNemar test, and the Cohen's kappa statistical test were used for statistical analysis. Over a 24-month interval, none of the test restorations were ranked as clinically unsatisfactory. In terms of functional criteria, clinically excellent restorations were significantly more prevalent in TBF/V than in TBF (p<0.05). For long-term satisfactory performance of Class II bulk-fill composites, an occlusal veneering increment of conventional heavy body microhybrid composite appears to be favorable.
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Affiliation(s)
- D Kaisarly
- *Dalia Kaisarly, BDS, MDSc, PhD, University of Munich, Munich, Germany; Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Saudi Arabia
| | - M ElGezawi
- Moataz ElGezawi, BDS, MDSc, DDSc, Department of Restorative Dental Sciences, College of Dentistry, Imam Abdul Rahman Bin Faisal University, Dammam, Saudi Arabia
| | - R Haridy
- Rasha Haridy, BDS, MScD, PhD, Department of Clinical Dental Sciences, Princess Nourah Bint Abdel Rahman University, Saudi Arabia
| | - A Elembaby
- Abeer Elembaby, BDS, MScD, PhD, Department of Restorative Dental Sciences, College of Dentistry, Imam Abdul Rahman Bin Faisal University, Dammam, Saudi Arabia
| | - A Aldegheishem
- Alhanooof Aldegheishem, BDS, MScD, PhD, Department of Clinical Dental Sciences, Princess Nourah Bint Abdel Rahman University, Saudi Arabia
| | - R Alsheikh
- Rasha Alsheikh, BDS, MScD, PhD, Department of Clinical Dental Sciences, Princess Nourah Bint Abdel Rahman University, Saudi Arabia
| | - K S Almulhim
- Khalid S. Almulhim BDS, MScD, PhD, Department of Clinical Dental Sciences, Princess Nourah Bint Abdel Rahman University, Saudi Arabia
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ŞENOL AA, YILMAZ ATALI P, KAHRAMANOĞLU E. Microleakage and Marginal Integrity of Direct and Indirect Composite Resin Restorations in MOD Cavities After Thermo-Mechanical Loading. CLINICAL AND EXPERIMENTAL HEALTH SCIENCES 2021. [DOI: 10.33808/clinexphealthsci.880368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Silva MF, Dias MF, Lins-Filho PC, Silva CHV, Guimarães RP. Color stability of Bulk-Fill composite restorations. J Clin Exp Dent 2020; 12:e1086-e1090. [PMID: 33262876 PMCID: PMC7680568 DOI: 10.4317/jced.57579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 08/10/2020] [Indexed: 11/29/2022] Open
Abstract
Background The color stability of the composite resin is an important property that influences its clinical longevity, which remains an inherent challenge to the material. Thus, the purpose of this study was to evaluate the color stability of bulk-fill resins when exposed to dye.
Material and Methods Cavities were prepared in 80 bovine incisors, which were randomly assigned into 4 groups (n = 20) according with the resin composite used: P60 (Control Group - Filtek P60, 3M/ESPE), FP (Filtek Bulk-Fill Posterior, 3M/ESPE), SDR (SDR, Dentsply) and FF (Filtek Bulk Fill Flow, 3M/ESPE). All restorations were performed according to the protocol of each manufacturer, the control group was restored using the incremental technique, and the other groups using single-increment technique. The color of each restoration was measured using a portable digital spectrophotometer (Easyshade-Vita) according to the CIELab system, and then the teeth were submerged in red wine for 07 days, kept in a biological oven at 37ºC. New color registration was performed to measure the ΔE index of color variation.
Results The P60 group had the lowest average ΔE (16.96), while the FF group had the highest average (28.09) and ranged from 21.19 to 26.28 in the FP and SDR groups.
Conclusions Analysis of the color variation showed that the control group had better color stability than the Bulk-Fill resins evaluated. Key words:Dental restoration failure, Food coloring agents, polymerization.
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Affiliation(s)
| | - Marlon-Ferreira Dias
- Master student of the Dentistry postgraduate program of Universidade Estadual Paulista
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Splieth CH, Kanzow P, Wiegand A, Schmoeckel J, Jablonski-Momeni A. How to intervene in the caries process: proximal caries in adolescents and adults-a systematic review and meta-analysis. Clin Oral Investig 2020; 24:1623-1636. [PMID: 32306093 DOI: 10.1007/s00784-020-03201-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 01/07/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVES For an ORCA/EFCD consensus, this systematic review assessed the question "How to intervene in the caries process in proximal caries in adolescents and adults". MATERIAL AND METHODS Separating between the management of initial and cavitated proximal caries lesions, Medline via PubMed was searched regarding non-operative/non-invasive, minimally/micro-invasive and restorative treatment. First priority was systematic reviews or randomized controlled trials (RCTs), otherwise cohort studies. After extraction of data, the potential risk of bias was estimated depending on the study type, and the emerging evidence for conclusions was graded. RESULTS Regarding non-invasive/non-operative care (NOC), no systematic reviews or RCTs were found. In cohort studies (n = 12) with a low level of evidence, NOC like biofilm management and fluoride was associated with a low proportion and slow speed of progression of initial proximal lesions. Minimally/micro-invasive (MI) treatments such as proximal sealants or resin infiltration (four systematic reviews/meta-analyses) were effective compared with a non-invasive/placebo control at a moderate level of evidence. Data on restorative treatment came with low evidence (5 systematic reviews, 13 RCTs); with the limitation of no direct comparative studies, sample size-weighted mean annual failure rates of class II restorations varied between 1.2 (bulk-fill composite) and 3.8% (ceramic). Based on one RCT, class II composite restorations may show a higher risk of failure compared with amalgam. CONCLUSIONS Proximal caries lesions can be managed successfully with non-operative, micro-invasive and restorative treatment according to lesion stage and caries activity. CLINICAL RELEVANCE Proximal caries treatment options like non-operative, micro-invasive and restorative care should be considered individually.
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Affiliation(s)
- C H Splieth
- Clinic for Preventive and Paediatric Dentistry, University of Greifswald, Fleischmannstr. 42, 17475, Greifswald, Germany.
| | - P Kanzow
- Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen, Germany
| | - A Wiegand
- Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Göttingen, Germany
| | - J Schmoeckel
- Clinic for Preventive and Paediatric Dentistry, University of Greifswald, Fleischmannstr. 42, 17475, Greifswald, Germany
| | - A Jablonski-Momeni
- Department of Orthodontics, Dental School, Philipps-University Marburg, Marburg, Germany
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Wang J, Liu Y, Yu J, Sun Y, Xie W. Study of POSS on the Properties of Novel Inorganic Dental Composite Resin. Polymers (Basel) 2020; 12:polym12020478. [PMID: 32093186 PMCID: PMC7077635 DOI: 10.3390/polym12020478] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/14/2020] [Accepted: 02/18/2020] [Indexed: 11/16/2022] Open
Abstract
: Various amounts of methacryl polyhedral oligomeric silsesquioxane (POSS) were explored to be incorporated into novel nano SiO2 dental resin composites using light curing method. The scanning electron microscopy (SEM), optical microscopy, fourier transform infrared spectroscopy (FTIR), nanoindentation, nanoscratch and three-point flexure tests were performed. The volumetric shrinkage and mechanical properties such as hardness, elastic modulus, resistance, flexural strength and fracture energy were analyzed. With the additions of POSS, the volume shrinkage decreased and the mechanical properties initially increased. The effects of POSS on these properties were studied to provide a reference for clinically selecting a composite resin with excellent properties.
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Affiliation(s)
- Jiahui Wang
- College of materials, Shanghai Dianji University, Shanghai 200000, China
| | - Yizhi Liu
- Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin 150000, China
- Correspondence:
| | - Jianxin Yu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150000, China
| | - Yi Sun
- Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin 150000, China
| | - Weili Xie
- Department of Stomatology, Harbin Medical University, Harbin 150000, China
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Wu Z, Xu H, Xie W, Wang M, Wang C, Gao C, Gu F, Liu J, Fu J. Study on a novel antibacterial light-cured resin composite containing nano-MgO. Colloids Surf B Biointerfaces 2020; 188:110774. [PMID: 31945630 DOI: 10.1016/j.colsurfb.2020.110774] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/11/2019] [Accepted: 01/03/2020] [Indexed: 01/06/2023]
Abstract
A new type of photocurable resin composite containing nano-MgO was synthesized in order to reduce the occurrence of secondary caries. Different mass ratios (0 %, 1 %, 2 %, 4 %, 8 %) of nano-MgO were added into resin composites. The antibacterial properties of nano-MgO powder and modified resin composites against Streptococcus mutans (S. mutans) were detected by antibacterial ring test and film contact test, respectively. Compressive strength (CS) and wear resistance were determined by a universal testing machine and an abrasion test machine. The results indicated that antibacterial activity and wear resistance of resin composites containing nano-MgO were superior to the control group (p < 0.05). The antibacterial rate reached as high as 99.4 % when the mass ratio of nano-MgO was 8 %. However, the CS values tended to decline as the content of nano-MgO increase. Hence, the addition of nano-MgO showed excellent antibacterial property to resin composites and enhanced wear resistance, but was detrimental to their mechanical properties.
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Affiliation(s)
- Zhongyuan Wu
- Department of Stomatology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, 266003, China
| | - Haiping Xu
- Department of Stomatology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, 266003, China
| | - Wei Xie
- Department of Stomatology, Huikang Hospital, Qingdao University Medical Group, Qingdao, 266000, China
| | - Meimei Wang
- Department of Stomatology, Weifang Weien Hospital, Weifang, 261000, China
| | - Cunjin Wang
- Department of Stomatology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, 266003, China
| | - Cheng Gao
- Department of Stomatology, Shanghai Stomatological Hospital, Fudan University, Shanghai, 200001, China
| | - Fang Gu
- Qingdao University Medical College, Qingdao, Shandong 266021, China.
| | - Jie Liu
- Department of Stomatology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, 266003, China
| | - Jing Fu
- Department of Stomatology, The Affiliated Hospital of Qingdao University, College of Stomatology, Qingdao University, Qingdao, 266003, China.
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Francisconi-Dos-Rios LF, Tavares JAO, Oliveira L, Moreira JC, Nahsan FPS. Functional and aesthetic rehabilitation in posterior tooth with bulk-fill resin composite and occlusal matrix. Restor Dent Endod 2020; 45:e9. [PMID: 32110538 PMCID: PMC7030967 DOI: 10.5395/rde.2020.45.e9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 10/20/2019] [Accepted: 11/21/2019] [Indexed: 01/21/2023] Open
Abstract
The restorative procedure in posterior teeth involves clinical steps related to professional skill, especially when using the incremental technique, which may fail in the long term. A recent alternative is bulk-fill resins, which can reduce polymerization shrinkage, decreasing clinical problems such as marginal leakage, secondary caries, and fracture. This scientific study aims to report a clinical case using bulk-fill resin with an occlusal matrix. As determined in the treatment plan, an acrylic resin matrix was produced to establish an improved oral and aesthetic rehabilitation of the right mandibular first molar, which presented a carious lesion with dentin involvement. The occlusal matrix is a simple technique that maintains the original dental anatomy, showing satisfactory results regarding function and aesthetic rehabilitation.
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30
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The Organic Matrix of Restorative Composites and Adhesives. Biomater Sci 2020. [DOI: 10.1016/b978-0-12-816137-1.00013-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Bellinaso MD, Soares FZM, Rocha RDO. Do bulk-fill resins decrease the restorative time in posterior teeth? A systematic review and meta-analysis of in vitro studies. ACTA ACUST UNITED AC 2019; 10:e12463. [PMID: 31560449 DOI: 10.1111/jicd.12463] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/22/2019] [Accepted: 08/13/2019] [Indexed: 11/28/2022]
Abstract
The aim of the present study was to compare the restorative time for filling cavities in posterior teeth using bulk-fill and conventional resin composites through a systematic review and meta-analysis. A search for clinical trials and laboratory studies was performed in PubMed/MEDLINE, Scopus, the Latin American and Caribbean Health Sciences Literature database, the Brazilian Library in Dentistry, Cochrane Library, Clinical Trials, and ReBEC (Registro Brasileiro de Ensaios Clínicos) databases without publication year or language restriction. Two reviewers identified eligible studies according to the inclusion criteria: bulk-fill compared to conventional resin in class I or II, and the restorative time as an outcome. A meta-analysis of the restorative time mean difference between composites was performed (inverse variance method, random effects model; Z-test, P ≤ .05). From the 662 eligible studies, 133 were selected for full-text analysis; three were included in the systematic review and in the meta-analysis. Overall, the restorative time was lower when bulk-fill was used (P = .0007, Z = 3.37), as the subgroup full-body bulk-fill (P < .00001, Z = 21.00). There was no difference in restorative time between flowable bulk-fill and conventional resins (P = .08, Z = 1.76). Moderate-to-substantial heterogeneity was detected. Full-body bulk-fill composites decrease the restorative time in posterior teeth compared to conventional resins. Full-body bulk-fill resins require a shorter restorative time to perform restorations in posterior teeth than conventional resins, but the same is not valid for flowable bulk-fill resin composites.
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Affiliation(s)
- Mariana D Bellinaso
- Postgraduate Program in Dental Science, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Fabio Z M Soares
- Department of Restorative Dentistry, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Rachel de Olivera Rocha
- Department of Stomatology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
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Cagna DR, Donovan TE, McKee JR, Eichmiller F, Metz JE, Albouy JP, Marzola R, Murphy KR, Troeltzsch M. Annual review of selected scientific literature: A report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2019; 122:198-269. [PMID: 31405523 DOI: 10.1016/j.prosdent.2019.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 12/13/2022]
Abstract
This comprehensive review of the 2018 dental literature is provided to inform busy dentists about progress in the profession. Developed by the Committee on Scientific Investigation of the American Academy of Restorative Dentistry, each author brings discipline-specific expertise to one of the 8 sections of the report including (1) prosthodontics; (2) periodontics, alveolar bone, and peri-implant tissues; (3) implant dentistry; (4) dental materials and therapeutics; (5) occlusion and temporomandibular disorders; (6) sleep-related breathing disorders; (7) oral medicine and oral and maxillofacial surgery; and (8) dental caries and cariology. The report targets important information that will likely influence day-to-day treatment decisions. Each review is not intended to stand alone but to update interested readers so that they may visit source materials if greater detail is desired. As the profession continues its march toward evidence-based clinical decision-making, an already voluminous library of potentially valuable dental literature continues to grow. It is the intention of this review and its authors to provide assistance in navigating the extensive dental literature published in 2018. It is our hope that readers find this work useful in the clinical management of patients moving forward.
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Affiliation(s)
- David R Cagna
- Professor, Associate Dean, and Residency Director, Department of Prosthodontics, University of Tennessee Health Sciences Center, College of Dentistry, Memphis, Tenn.
| | - Terence E Donovan
- Professor and Head of Biomaterials, Department of Restorative Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC
| | - James R McKee
- Private practice, Restorative Dentistry, Downers Grove, Ill
| | | | - James E Metz
- Private practice, Restorative Dentistry, Columbus, Ohio
| | - Jean-Pierre Albouy
- Assistant Professor, Department of Restorative Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC
| | | | - Kevin R Murphy
- Associate Clinical Professor, Department of Periodontics, University of Maryland College of Dentistry, Baltimore, MD; Private practice, Periodontics and Prosthodontics, Baltimore, MD
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Comparison of laser- and bur-prepared class I cavities restored with two different low-shrinkage composite resins: a randomized, controlled 60-month clinical trial. Clin Oral Investig 2019; 24:357-368. [DOI: 10.1007/s00784-019-02931-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 04/30/2019] [Indexed: 10/26/2022]
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Fahim SE, Mostafa MA, Abi-Elhassan MH, Taher HM. Clinical Behaviour and Marginal Sealing of Bulk-Fill Resin Composite Restorations Using Light Amplified High-Intensity LEDs Curing: A Randomized Controlled Clinical Trial. Open Access Maced J Med Sci 2019; 7:1360-1368. [PMID: 31110586 PMCID: PMC6514356 DOI: 10.3889/oamjms.2019.216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/14/2019] [Accepted: 04/15/2019] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND: Delivering sufficient intensity output of curing lights is mandatory to ensure optimum cure and clinical success of bulk-fill resin composite restorations and to avoid undesirable clinical outcomes. AIM: To evaluate the effectiveness of using light amplified high intensity LED curing on the clinical performance and marginal sealing of posterior bulk-fill resin composite restorations. MATERIAL AND METHODS: This study was designed as a randomised, controlled, double-blind, Unicenter, parallel, two arms, superiority trial with 1:1 allocation ratio. Adult patients who required posterior tooth-coloured restorations were asked to participate in this trial. All participants signed written informed consent after being completely aware of the settings of the study. The participants who fulfilled the eligibility criteria were divided into two groups according to the type of light curing mode used. Adhesive compound proximal cavities were prepared. All restorative materials were applied according to the respective manufacturer’s instructions. Assessments of the restorations were done at baseline (one week after placement of the restoration), after 6 months and after 12 months using the modified US Public Health Service (USPHS) criteria. For quantitative assessment of the marginal sealing, resin replicas were analysed using scanning electron microscopy. Statistical analysis was done using Chi-square, Mann Whitney, independent t-test and dependent t-tests. RESULTS: There were no statistical differences between the two groups for the tested clinical parameters along the study periods. For marginal analysis, there were no statistical differences between the intervention and control group at baseline and six months (p-value = 0.347 and 0.516) respectively. At 12 months the control group showed statistically significant higher percentages (p-value = 0.031). CONCLUSION: Light amplified high-intensity curing units have clinical performance comparable with the conventional LED.
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Rizzante FAP, Mondelli RFL, Furuse AY, Borges AFS, Mendonça G, Ishikiriama SK. Shrinkage stress and elastic modulus assessment of bulk-fill composites. J Appl Oral Sci 2019; 27:e20180132. [PMID: 30624465 PMCID: PMC6322642 DOI: 10.1590/1678-7757-2018-0132] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 07/08/2018] [Indexed: 12/13/2022] Open
Abstract
Bulk-fill composites were introduced in dentistry to accelerate clinical procedures while providing adequate outcomes. Concerns regarding the use of bigger composite increments rely on the polymerization shrinkage and shrinkage stress, which may generate gaps on the adhesive interface and result in a reduced success rate. Objective: To evaluate the polymerization shrinkage stress of different bulk-fill resin composites and their elastic modulus. Materials and Methods: Fourteen specimens were made for each of the nine different resin composites (seven with 12 mm3 and seven with 24 mm3): Surefill SDR flow (SDR), X-tra Base (XB), Filtek Bulk Fill Flowable (FBF), Filtek Z350XT Flow (Z3F); Tetric Evo Ceram Bulk Fill (TBF), X-tra Fil (XF), Filtek Bulk Fill (FBP), Admira Xtra Fusion (ADM) and Filtek Z350 XT (Z3XT). Linear shrinkage stress was evaluated for 300 s with the aid of a linear shrinkage device adapted to a Universal Testing Machine. For each composite group, seven additional specimens (2x2x25 mm) were made and Young's modulus was evaluated with a 3-point bending device adapted in a Universal Testing Machine with 0.5 mm/min crosshead speed and 50 KgF loading cell. Results: For 12 mm3 specimens, three-way ANOVA showed that only SDR and TBF generated lower stress after 20 s. Considering 300 s, TBF, SDR, and XF generated the lowest stress, followed by ADM, FBP, XB, and FBF, which were similar to Z3XT. Z3F generated the highest stress values for all time points. Considering 24 mm3 specimens after 20 s, all bulk fill composites generated lower stress than Z3XT, except XB. After 300 s, SDR, FBP, and ADM generated the lowest stress, followed by TBF and XF. For elastic modulus, one-way ANOVA showed that FBF, SDR, Z3F, and ADM presented the lowest values, followed by XB and TBF. FBP, Z3XT, and XF presented the highest elastic modulus among the evaluated composites. Conclusions: Bulk-fill resin composites presented equal to lower shrinkage stress generation when compared to conventional composites, especially when bigger increments were evaluated. Bulk-fill composites showed a wide range of elastic modulus values, but usually similar to “regular” composites.
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Affiliation(s)
- Fabio Antonio Piola Rizzante
- Case Western Reserve University, School of Dental Medicine, Department of Comprehensive Care, Cleveland, Ohio, USA
| | - Rafael Francisco Lia Mondelli
- University of São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, São Paulo, Brazil
| | - Adilson Yoshio Furuse
- University of São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, São Paulo, Brazil
| | - Ana Flávia Sanches Borges
- University of São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, São Paulo, Brazil
| | - Gustavo Mendonça
- University of Michigan, School of Dentistry, Department of Biologic and Material Sciences - Division of Prosthodontics, Ann Arbor, Michigan, USA
| | - Sérgio Kiyoshi Ishikiriama
- University of São Paulo, Faculdade de Odontologia de Bauru, Departamento de Dentística, Endodontia e Materiais Odontológicos, Bauru, São Paulo, Brazil
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Fidalgo TKDS, Americano G, Medina D, Athayde G, Letieri ADS, Maia LC. Adhesiveness of bulk-fill composite resin in permanent molars submitted to Streptococcus mutans biofilm. Braz Oral Res 2019; 33:e111. [DOI: 10.1590/1807-3107bor-2019.vol33.0111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 10/24/2019] [Indexed: 11/21/2022] Open
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In vitro aging behavior of dental composites considering the influence of filler content, storage media and incubation time. PLoS One 2018; 13:e0195160. [PMID: 29630621 PMCID: PMC5890995 DOI: 10.1371/journal.pone.0195160] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/16/2018] [Indexed: 01/17/2023] Open
Abstract
Objective Over time dental composites age due to mechanical impacts such as chewing and chemical impacts such as saliva enzymes and food ingredients. For this research, the focus was placed on chemical degradation. The objective of this study was to simulate hydrolysis by using different food simulating liquids and to assess their impact on the mechanical parameter Vickers microhardness (MHV) and the physicochemical parameter contact angle (CA). Methods Specimen of three composites (d = 6 mm, h = 2 mm; n = 435) classified with respect to their filler content (wt%), namely low-filled, medium-filled and highly-filled, were stored for 0, 14, 30, 90 and 180 days in artificial saliva (pH 7), citric acid (pH 3; pH 5), lactic acid (pH 3; pH 5) and ethanol (40%vol; 60%vol) and assessed regarding to MHV and CA. Statistics: Kruskal-Wallis test, stepwise linear regression, bivariate Spearman Rank Correlation (p < 0.05). Results While stored in artificial saliva, acid and ethanol the CA decreased especially for the low- and medium-filled composites. It was shown that rising the filler content caused less surface changes in the CA. Storage in ethanol led to a significant decrease of MHV of all composites. Regression analysis showed that the effect of in vitro aging on MHV was mainly influenced by the composite material and therefore by filler content (R2 = 0.67; p < 0.05). In contrast, the CA is more influenced by incubation time and filler content (R2 = 0.2; p < 0.05) leading to a higher risk of plaque accumulation over time. Significance: In vitro aging showed significant changes on the mechanical and physicochemical properties of dental composites which may shorten their long-term functionality. In conclusion, it can be stated, that the type of composite material, especially rising filler content seems to improve the materials’ resistance against the processes of chemical degradation.
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