International Journal of Prosthodontics and Restorative Dentistry

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VOLUME 11 , ISSUE 3 ( July-September, 2021 ) > List of Articles

ORIGINAL RESEARCH

Evaluation of Flexural Strength of Autopolymerizing Polymethyl Methacrylate and Bis-acrylic Composite Provisional Restorative Resins Reinforced with Bamboo Fibers: An In Vitro Study

Keerthika Natarajan, Suganya Srinivasan, Murugesan Krishnan, Muthukumar Balasubramanian

Keywords : Dental materials, Natural fibers, Temporary restoration, Three point bending test

Citation Information : Natarajan K, Srinivasan S, Krishnan M, Balasubramanian M. Evaluation of Flexural Strength of Autopolymerizing Polymethyl Methacrylate and Bis-acrylic Composite Provisional Restorative Resins Reinforced with Bamboo Fibers: An In Vitro Study. Int J Prosthodont Restor Dent 2021; 11 (3):112-118.

DOI: 10.5005/jp-journals-10019-1320

License: CC BY-NC 4.0

Published Online: 01-02-2022

Copyright Statement:  Copyright © 2021; The Author(s).


Abstract

Aim and objective: The aim is to reinforce autopolymerizing polymethyl methacrylate (PMMA) and bis-acrylic composite (BAC) provisional restorative resin with bamboo fibers and evaluate its effect on the flexural strength of the resin in comparison to the unreinforced material. The objective of the study is to find a suitable natural alternative to synthetic fibers like glass to strengthen the materials used for fabricating provisional fixed partial dentures. Materials and methods: A total of 4 groups each containing 15 samples of 25 × 2 × 2 mm dimension namely group I: unreinforced PMMA, group II: PMMA resin reinforced with bamboo fibers, group III: unreinforced BAC and group IV: BAC resin reinforced with bamboo fibers. The bamboo fibers of 22 mm length were initially pretreated with 6% Sodium hydroxide solution for 12 hours and dried thoroughly for 2 weeks. The dried fibers were placed longitudinally in the reinforced samples by a layering method at 5% w/w concentration. For determining the flexural strength, specimens were then tested by 3-point bend test on universal testing machine. The fractured samples were then analyzed using scanning electron microscope at 50×, 100×, 250× magnification. Results: The results obtained were analyzed in STATA software release 14.0 using one-way ANOVA test. According to the results, the mean flexural strength (in MPa) values were group IV (152.42) > group II (127.2) >group III (106.79) > group I (99.28) and was statistically significant p = 0.001. Conclusion: Thus, bamboo fibers have a reinforcing effect on autopolymerizing polymethyl methacrylate and bis-acrylic composite provisional restorative resins and significantly increases their flexural strength.


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  1. Mizrahi B. Temporary restorations: the key to success. Br Dent J 2019;226(10):761–768. DOI: 10.1038/s41415-019-0360-1.
  2. Dureja I, Yadav B, Malhotra P, et al. A comparative evaluation of vertical marginal fit of provisional crowns fabricated by computer-aided design/computer-aided manufacturing technique and direct (intraoral technique) and flexural strength of the materials: an in vitro study. J Indian Prosthodont Soc 2018;18(4):314–320. DOI: 10.4103/jips.jips_306_17.
  3. Digholkar S, Madhav VN, Palaskar J. Evaluation of the flexural strength and microhardness of provisional crown and bridge materials fabricated by different methods. J Indian Prosthodont Soc 2016;16(4):328–334. DOI: 10.4103/0972-4052.191288.
  4. Mei M, So S, Li H, et al. Effect of heat treatment on the physical properties of provisional crowns during polymerization: an in vitro study. Materials 2015;8(4):1766–1777. DOI: 10.3390/ma8041766.
  5. Kapri A. Comparison of fiber reinforcement placed at different locations of pontic in interim fixed partial denture to prevent fracture: an in vitro study. J Indian Prosthodont Soc 2015;15(2):142. DOI: 10.4103/0972-4052.155037.
  6. Gopichander N, Halini Kumarai KV, Vasanthakumar M. Effect of polyester fiber reinforcement on the mechanical properties of interim fixed partial dentures. Saudi Dent J 2015;27(4):194–200. DOI: 10.1016/j.sdentj.2015.03.002.
  7. Mahir FI, Keya KN, Sarker B, et al. A brief review on natural fiber used as a replacement of synthetic fiber in polymer composites. Mater Eng Res 2019;1(2):86–97. DOI: 10.25082/MER.2019.02.007.
  8. Zhang K, Sun Y, Wang F, et al. Progressive failure and energy absorption of chopped bamboo fiber reinforced polybenzoxazine composite under impact loadings. Polymers (Basel) 2020;12(8):1809. DOI: 10.3390/polym12081809.
  9. Zhang W, Wang C, Gu S, et al. Physical-mechanical properties of bamboo fiber composites using filament winding. Polymers (Basel) 2021;13(17):2913. DOI: 10.3390/polym13172913.
  10. Lokesh P, Surya Kumari T, Gopi R, et al. A study on mechanical properties of bamboo fiber reinforced polymer composite. Mater Today: Proc 2020;22:897–903. DOI: 10.1016/j.matpr.2019.11.100.
  11. Chin S, Tee K, Tong F, et al. Thermal and mechanical properties of bamboo fiber reinforced composites. Mater Today Commun 2020;23:100876. DOI: 10.1016/j.mtcomm.2019.100876.
  12. Chang MC, Hung CC, Chen WC, et al. Effects of pontic span and fiber reinforcement on fracture strength of multi-unit provisional fixed partial dentures. J Dent Sci 2019;14(3):309–317. DOI: 10.1016/j.jds.2018.11.008.
  13. Psarri C, Kourtis S. Effect of fiber‐reinforcement on the strength of polymer materials for provisional restorations: an in vitro study. J Esthet Restor Dent 2020;32(4):433–440. DOI: 10.1111/jerd.12586.
  14. Gupt P, Nagpal A, Samra RK, et al. A comparative study to check fracture strength of provisional fixed partial dentures made of autopolymerizing polymethylmethacrylate resin reinforced with different materials: an in vitro study. J Indian Prosthodont Soc 2017;17(3):301–309. DOI: 10.4103/jips.jips_79_17.
  15. Thyavihalli Girijappa YG, Mavinkere Rangappa S, Parameswaranpillai J, et al. Natural fibers as sustainable and renewable resource for development of eco-friendly composites: a comprehensive review. Front Mater 2019;6:226. DOI: 10.3389/fmats.2019.00226.
  16. Qiu Z, Fan H. Nonlinear modeling of bamboo fiber reinforced composite materials. Compos Struct 2020;244:112240. DOI: 10.1016/j.compstruct.2020.112240.
  17. Raghavendara Rao H, Hari Sankar P, Murali Mohan M. Chemical resistance and impact properties of bamboo/glass fibers reinforced polyster hybrid composites. Int J Engineer Res 2014;3(2):79–81. DOI: 10.17950/ijer/v3s2/209.
  18. Zhang K, Wang F, Liang W, et al. Thermal and mechanical properties of bamboo fiber reinforced epoxy composites. Polymers 2018;10(6):608. DOI: 10.3390/polym10060608.
  19. Wang D, Bai T, Cheng W, et al. Surface modification of bamboo fibers to enhance the interfacial adhesion of epoxy resin-based composites prepared by resin transfer molding. Polymers (Basel) 2019;11(12):2107. DOI: 10.3390/polym11122107.
  20. Fonseca R, Kasuya A, Favarão I, et al. The influence of polymerization type and reinforcement method on flexural strength of acrylic resin. Sci World J 2015. 1–8. DOI: 10.1155/2015/919142.
  21. Huang N, Bottino M, Levon J, et al. The effect of polymerization methods and fiber types on the mechanical behavior of fiber-reinforced resin-based composites. J Prosthodont 2017;26(3):230–237. DOI: 10.1111/jopr.12587.
  22. Takagi H, Ichihara Y. Effect of fiber length on mechanical properties of “green” composites using a starch-based resin and short bamboo fibers. JSME Int J 2004;47(4):551–555. DOI: 10.1299/jsmea.47.551.
  23. Tezvergil A, Lassila L, Vallittu P. The effect of fiber orientation on the polymerization shrinkage strain of fiber-reinforced composites. Dent Mater 2006;22(7):610–616. DOI: 10.1016/j.dental.2005.05.017.
  24. Hamze F, Rezvani M, Atai M. Effect of fiber diameter on flexural properties of fiber-reinforced composites. Indian J Dent Res 2013;24(2):237. DOI: 10.4103/0970-9290.116696.
  25. Chung K, Lin T, Wang F. Flexural strength of a provisional resin material with fibre addition. J Oral Rehabil 1998;25(3):214–217. DOI: 10.1046/j.1365-2842.1998.00201.x.
  26. Alp G, Murat S, Yilmaz B. Comparison of flexural strength of different CAD/CAM PMMA-based polymers. J Prosthodont 2018;28(2):e491–e495. DOI: 10.1111/jopr.12755.
  27. Nejatidanesh F, Momeni G, Savabi O. Flexural strength of interim resin materials for fixed prosthodontics. J Prosthodont 2009;18(6):507–511. DOI: 10.1111/j.1532-849X.2009.00473.x.
  28. Young H, Smith C, Morton D. Comparative in vitro evaluation of two provisional restorative materials. J Prosth Dent 2001;85(2):129–132. DOI: 10.1067/mpr.2001.112797.
  29. Duymus ZY, Karaalioglu FO, Suleyman F. Flexural strength of provisional crown and fixed partial denture resins both with and without reinforced fiber. J Mater Sci Nanotechnol 2014;2(3):102. DOI: 10.15744/2348-9812.1.302.
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