MICROHARDNESS DIFFERENCES BETWEEN SILK FIBER AS A NATURAL FILLER COMPOSITE RESIN WITH NANOFILLER COMPOSITE RESIN

Sartika Puspita*    -  Dental School, UMY, Indonesia
Romadhon Yuan Aziz  -  Rumah Sakit Gigi dan Mulut Universitas Muhammadiyah Yogyakarta, Indonesia
Dwi Aji Nugroho  -  Departemen Dental Material Program Studi Kedokteran Gigi Universitas Muhammadiyah Yogyakarta, Indonesia

(*) Corresponding Author
DOI: 10.30659/odj.7.2.104-110

Background: Dental composite composed of natural filler is a trend nowadays. Silk fiber, Bombyx mori L., is one of the natural fibers that have good microhardness (66 VHN) and has a potency to become a renewable natural filler. This research aimed to determine microhardness differences of silk fiber composite B. mori L., and nanofiller composite resin as a gold standard.
Method: A quasi-experimental laboratory using composite resin with silk fiber B. mori L., as a natural filler; nanofiller composite Z350 XT flowable (3M ESPE, USA) as a positive control and no-filler composite as a negative control. Four cylindrical specimens per group were made (d=3mm, h=6mm). Microhardness tests were done with Vickers hardness tester (Shimadzu, Japan). Indentation of 100 grams for 20 seconds.
Result: There were significant differences in the natural filler, nanofiller group (positive) control and no-filler composite (negative control). Based on the Kruskal Wallis test result, there was a significant difference in microhardness (p=0.024). The highest microhardness was nanofiller (115,2 VHN), silk fiber filler (109,4 VHN), and no-filler composite (32,2 VHN).
Conclusion: Silk fiber Bombyx mori L., has shown the good potential of being a renewable natural filler (109,4 VHN) however lower than nanofiller composites.

Keywords: Bombyx mori L.; Composite Resin; Microhardness; Nanofiller; Natural Filler Composite Resin

  1. Nugroho DA, Widjijono, Nuryono, Asmara W, Wajar D. Efek Jumlah Kandungan Filler Nanosisal Terhadap Ketahanan Fraktur Resin Komposit. Insisiva Dental Journal. 2017; 6(1):17-23.
  2. Anusavice KJ, Shen C, Rawls HR. Phillips’ Science of Dental Materials. 12th ed. Saunders; 2012. 592.
  3. Noort R van. Introduction to dental materials. 4th ed. Edinburgh; New York: Mosby Elsevier; 2013. 246.
  4. Randolph LD, Palin WM, Leloup G, Leprince JG. Filler characteristics of modern dental resin composites and their influence on physico-mechanical properties. Dent Mater. 2016; 32(12):1586–1599.
  5. Sakaguchi RL, Ferracane JL, Powers JM, editors. Craig’s restorative dental materials. Fourteenth edition. St. Louis, Missouri: Elsevier; 2019.
  6. Kumar Gupta G, De S, Franco A, Balu A, Luque R. Sustainable Biomaterials: Current Trends, Challenges and Applications. Molecules. 2015; 21(1):48.
  7. Shakila N, Ali A, Zaidi S. Micro Hardness of Dental Tissues Influenced by Administration of Aspirin During Pregnancy. Int J Morphol. 2015; 33(2):586–593.
  8. Tuan HA, Hirai S, Tamada Y, Akioka S. Preparation of silk resins by hot pressing Bombyx mori and Eri silk powders. Mater Sci Eng C. 2019; 97:431–437.
  9. Vepari C, Kaplan DL. Silk as a biomaterial. Prog Polym Sci. 2007; 32(8–9):991–1007.
  10. Miletic V, editor. Dental Composite Materials for Direct Restorations. Cham:Springer International Publishing; 2018
  11. Vskd A, Fayhin SH, Askik SH. Filtek Z350 XT Technical Product Profile - 3M. Filtek Z350 XT Technical Product Profile - 3M. 2010
  12. Jiang P, Liu H, Wang C, Wu L, Huang J, Guo C. Tensile behavior and morphology of differently degummed silkworm (Bombyx mori) cocoon silk fibres. Mater Lett. 2006; 60(7):919–925.
  13. Amrita S, Connor AJ, Kofas M, Zha RH. Chemical Synthesis of SIlk Mimetic Polymers. Materials (Basel). 2019; 12(4086):1-24.
  14. Kastner J, Plank B, Salaberger D, Sekelja J. Defect and Porosity Determination of Fibre Reinforced Polymers by X-ray Computed Tomography. 2nd International Symposium on NDT in Aerospace 2010 - We.1.A.2. 2010; 1-12.
  15. Pickering KL, Efendy MGA, Le TM. A review of recent developments in natural fibre composites and their mechanical performance. Compos Part Appl Sci Manuf. 2016; 83:98–112.
  16. Bhusan, B. Depth-sensing nanoindentation measurement techniques and applications. Microsystem Technologies. 2017; 23:1597-1649

Lisensi Creative Commons
This work is licensed under a Lisensi Creative Commons Atribusi-BerbagiSerupa 4.0 Internasional.
Contact us: Odonto Dental Journal: Jl. Raya Kaligawe Km.4, PO BOX 1054/SM Semarang, Central Java, Indonesia, 50112. Email: odontodentaljournal@unissula.ac.id
apps