Perbedaan modulus elastisitas basis gigi tiruan resin akrilik polimerisasi panas tanpa dan dengan penambahan nanoselulosa serat daun nanas: eksperimental laboratoris

Abstract

ABSTRAK

Pendahuluan: Basis gigi tiruan pada umumnya dibuat menggunakan bahan resin akrilik polimerisasi panas. Resin akrilik polimerisasi panas memiliki kekurangan yaitu salah satunya mudah mengalami fraktur. Hal ini dapat diatasi dengan meningkatkan modulus elastisitas resin akrilik dengan penambahan nanoselulosa serat daun nanas sebagai bahan penguat. Tujuan dari penelitian ini adalah untuk mengetahui apakah ada pengaruh penambahan nanoselulosa serat daun nanas dengan konsentrasi 1% dan 1,5% pada basis gigi tiruan resin akrilik polimerisasi panas terhadap modulus elastisitas. Metode: penelitian ini adalah eksperimental laboratoris. Penelitian ini dilakukan pada sampel basis gigi tiruan resin akrilik polimerisasi panas yang tidak ditambahkan nanoselulosa serat daun nanas dan ditambahkan nanoselulosa serat daun nanas konsentrasi 1% dan 1,5% dengan sampel berukuran 65×10×2,5 mm sebanyak 27 sampel. Setiap sampel diuji dengan Universal Testing Machine untuk mengetahui nilai modulus elastisitas Hasil: Berdasarkan uji univarian nilai rerata dan standar deviasi modulus elastisitas basis resin akrilik polimerisasi panas tanpa penambahan sebesar 5168,31 ± 560,49 MPa, dengan penambahan nanoselulosa serat daun nanas konsentrasi 1% sebesar 6016,26 ± 374,11 MPa, dan dengan penambahan nanoselulosa serat daun nanas konsentrasi 1,5% sebesar 8536,37 ± 406,58 MPa. Uji Anova satu arah didapatkan hasil yang signifikan dengan nilai p = 0,001 (p < 0,05) dan uji LSD yang signifikan dengan nilai p = 0.001 (p<0.05) dan p=0,0001 (p < 0,05). Simpulan: ada pengaruh nanoselulosa serat daun nanas terhadap modulus elastisitas basis gigi tiruan resin akrilik polimerisasi panas.

Kata kunci: basis gigi tiruan, resin akrilik polimerisasi panas, nanoselulosa, serat daun nanas, modulus elastisitas

Differences in modulus elasticity of heat polymerized acrylic resin denture base without and with the addition of pineapple leaf fiber nanocellulose: laboratory experimental study

ABSTRACT

Introduction: Denture bases are generally made using resin base heat cured. Resin base heat cured has disadvantages, which is easy to fracture. This problem can be prevented by increasing the modulus elasticity of acrylic resin, namely by adding nanocellulose fiber of pineapple leaves as a reinforcing material. The advantages of pineapple leaf fiber nanocellulose are good mechanical strength, non-cytotoxic, non-inflammatory, environmentally friendly, abundant, and inexpensive. The purpose of this study was to analyze whether there was an effect of adding pineapple leaf fiber nanocellulose at concentrations of 1% and 1.5% on denture base heat cured acrylic resin on modulus elasticity.  Methods: The design of this research is laboratory experimental with a sample size of 65 × 10 × 2.5 mm 27 samples. Samples were made from pineapple leaves that were pulverized into powder and delignified to remove lignin and bleaching. Then oven-dried and ball-milled to change the size to nano. Each sample was tested with a Universal Testing Machine to determine the modulus of elasticity. Results: Analyzed by univariate test to determine the average value and standard deviation with the results of the average without additions were 5168,31 ± 560,49 MPa, with the addition of nanocellulose pineapple leaf fiber concentration 1 % was 6016,26 ± 374,11 MPa, and with the addition of nanocellulose fiber from pineapple leaves at a concentration of 1.5% was 8536,37 ± 406,58 MPa. ANOVA test was carried out with the result there was an significant effect with a value of p=0.001 (p<0,05), and LSD test, there was a significant effect with the value of p = 0,001 (p<0,05) and p = 0,0001 (p<0,05). Conclusion: There is a difference in modulus elasticity without and with the addition of pineapple leaf fiber nanocellulose. The results of the one-way ANOVA test were that there was a significant difference in pineapple leaf fiber nanocellulose concentrations of 1% and 1.5% in the heat polymerized acrylic resin denture base on the elastic modulus with a value of p=0.001 (p<0.05). Then the results of the LSD test, there is a significant difference between the control group and the 1% nanocellulose group with p=0.001 (p<0.05), the control group with the 1.5% nanocellulose addition group with p=0.0001 (p<0.05), and the 1% nanocellulose group with the 1.5% nanocellulose group with p=0.0001 (p<0.05).

Keywords:denture base, heat cured acrylic resin, nanocellulose, pineapple leaf fiber, modulus of elasticity