دورية أكاديمية
أعرض في EDS

Comparative Evaluation of Bulk-Fill Composite Resins: Knoop Microhardness, Diametral Tensile Strength and Degree of Conversion.

التفاصيل البيبلوغرافية
العنوان: Comparative Evaluation of Bulk-Fill Composite Resins: Knoop Microhardness, Diametral Tensile Strength and Degree of Conversion.
المؤلفون: Strini BS; Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Marques JFL; Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Pereira R; Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Sobral-Souza DF; Dental School, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil., Pecorari VGA; Department of Biostatistics, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Liporoni PCS; Department of Restorative Dentistry, University of Taubate, Taubaté, SP, Brazil., Aguiar FHB; Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
المصدر: Clinical, cosmetic and investigational dentistry [Clin Cosmet Investig Dent] 2022 Aug 04; Vol. 14, pp. 225-233. Date of Electronic Publication: 2022 Aug 04 (Print Publication: 2022).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Dove Medical Press Country of Publication: New Zealand NLM ID: 101579785 Publication Model: eCollection Cited Medium: Print ISSN: 1179-1357 (Print) Linking ISSN: 11791357 NLM ISO Abbreviation: Clin Cosmet Investig Dent Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: [Auckland, N.Z.] : Dove Medical Press
مستخلص: Purpose: Bulk-fill composite resins were developed to reduce time and facilitate the restorative procedure. However, considering their recent introduction on the market and the new formulations, their performance still requires evaluation. This study aimed to evaluate Knoop microhardness (KHN), diametral tensile strength (DTS) and degree of conversion (DC) of three Bulk-Fill composite resins and a conventional one.
Materials and Methods: Sixty samples (n = 15; 8 mm ø x 4 mm height) were confectioned using a mold. Filtek Bulk-Fill (FBF), Tetric N-Ceram Bulk-Fill (TNC) and SonicFill 2 (SF2) were placed in 4 mm increments, and Filtek Z350 (FZ350) was placed in 2 mm increments. The KHN of top and bottom surfaces were tested using Knoop Hardness tester at 10 gf/10s. The DTS was tested under compressive load at 1.0 mm/min. The DC was measured by Fourier Transform Infrared (FTIR) spectroscopy. Differences in DTS and DC were analyzed by ANOVA and Tukey post hoc test. For KHN, Kruskal-Wallis and Wilcoxon tests were performed at α = 0.05.
Results: Top surfaces of all composite resins had higher KHN than bottom surfaces. At top and bottom surfaces, FZ350 showed higher KHN than TNC and SF2. The highest DTS was obtained by FBF, followed by FZ350 and SF2. The highest DC was obtained by SF2, the lowest one was obtained by FBF.
Conclusion: From Bulk-Fill composite resins, FBF presented the best KHN and DTS results. The SF2 showed the best DC. Further studies are required to ensure whether these differences can negatively influence the behavior of in vivo restorations.
Competing Interests: Bruna Scarcello Strini, Joyce Figueiredo de Lima Marques and Renata Pereira report grants from PIBIC/UNICAMP, during the conduct of the study. The authors report no conflicts of interest in this work.
(© 2022 Strini et al.)
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فهرسة مساهمة: Keywords: Bulk-Fill; FTIR; composite resins; hardness; tensile strength
تواريخ الأحداث: Date Created: 20220812 Latest Revision: 20220813
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC9359371
DOI: 10.2147/CCIDE.S376195
PMID: 35957701
قاعدة البيانات: MEDLINE
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