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    Pengaruh Thermocycling dan Penambahan Serat Polietilen terhadap Kekuatan Impak dan Transversal pada Bahan Basis gigitiruan resin akrilik Polimerisasi Panas

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    Date
    2015
    Author
    Lim, Emerson
    Advisor(s)
    Nasution, Ismet Danial
    Nasution, Indra
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    Abstract
    Heat polymerized resin acrylic most widely used in the manufacture of denture base, but but one of the weakness of this material is the mechanical properties (flexural strength and impact strength) were limited. Several methods have been made to improve the mechanical properties of acrylic resin. Conventional methods are used to reinforce the denture base polymers generally use metal wire or mesh, but there are weaknesses in the aesthetic and poor adhesion. Another alternative to improve the mechanical strength of acrylic resin is the usage fiber reinforced that are polyethylene fibers which have the advantage of a good aesthetic, easily manipulated and improved the mechanical strength. There are two purposes of this study is to determine thermocyling effect on impact and transverse strength heat polymerized resin acrylic denture base with and without the addition of polyethylene fiber Ribbond THM and Ribbond Ultra, as well as to determine the effect of addition of Ribbond THM and Ribbond Ultra to impact strength and transverse strength heat polymerized resin acrylic denture base with non thermocycling and thermocycling. This research is an experimental laboratory. The samples was made in the Laboratory of Dental Unit UJI FKG USU, 30 samples each category for testing the impact strength and transversal strength. Impact and transverse testing group divided into six groups consisting of a group without the addition of fiber and non thermocycling, the group with the addition of fiber Ribbond THM and non thermocycling, the group with the addition of fiber Ribbond Ultra and non thermocycling, the group without the addition of fiber and thermocycling, the group with the addition of fiber Ribbond THM and thermocycling, and the group with the addition of fiber Ribbond Ultra and thermocycling. Thermocyling effect on impact strength and transverse strength heat polymerized resin acrylic denture base with and without the addition of fiber Ribbond THM and Ribbond Ultra were analyzed by Ttest. Effect of addition of polyethylene fiber and Ribbond THM and Ribbond Ultra on impact strength and transverse material heat polymerized resin acrylic denture base with thermocycling and non thermocycling analyzed by One Way ANOVA. LSD analysis then performed to see polyethylene fiber Ribbond that has the best effect on improvement of impact strength and transverse strength to the denture base material of heat polymerized resin acrylic. The results showed that there was no effect of thermocycling effect on the impact strength of heat polymerization acrylic resin denture base material without the addition of fiber Ribbond THM and Ribbond Ultra. No effect of thermocycling on the impact strength of heat polymerization acrylic resin denture base material with the addition of fiber Ribbond THM. There thermocycling effect on the transverse strength of heat polymerization acrylic resin denture base material with the addition of Ribbond THM. No effect of thermocycling on the transverse strength of acrylic resin denture base material heat polymerization without the addition of fiber and with the addition of fiber Ribbond Ultra. There is the effect of the addition of polyethylene fibers on the heat polymerized acrylic resin denture base material and in thermocycling on the impact strength. There is the effect of the addition of polyethylene fibers on the denture base material of heat polymerized resin acrylic and in thermocycling on transverse strength values. Average value on Ribbond THM showed the most significant impact strength increased after thermocycling with value 38.875 ± 0.6652 KJ/m2 (p = 0.000) and the highest transverse strength 83.15 ± 0.9361 MPa (p = 0.000). The influence of impact strength and transverse strength hot polymerization acrylic resin denture base with the addition of fiber Ribbond THM still acceptable despite the decline in value and transverse impact strength after thermocycling. Denture base fiber reinforcement that is given will increase the mechanical properties thereby increasing heat polimerized acrylic denture lifespan.
     
    Resin akrilik polimerisasi panas merupakan bahan yang paling banyak di gunakan dalam pembuatan basis gigitiruan, namun mempunyai kelemahan sifat mekanis (kekuatan impak dan kekuatan transversal). Beberapa upaya telah dilakukan untuk meningkatkan sifat mekanis resin akrilik. Metode konvensional yang digunakan untuk memperkuat polimer basis gigitiruan umumnya menggunakan kawat metal atau mesh, namun terdapat kelemahan dalam estetik dan adhesi yang kurang baik. Alternatif lain untuk meningkatkan kekuatan mekanik resin akrilik digunakan serat penguat yaitu serat polietilen yang memiliki keuntungan yaitu estetik yang baik, mudah dimanipulasi dan dapat meningkatkan kekuatan mekanis. Tujuan penelitian ini ada dua yaitu untuk mengetahui pengaruh thermocyling terhadap kekuatan impak dan transversal bahan basis gigitiruan resin akrilik polimerisasi panas tanpa dan dengan penambahan serat polietilen Ribbond THM dan Ribbond Ultra, serta untuk mengetahui pengaruh penambahan serat Ribbond THM dan Ribbond Ultra terhadap kekuatan impak dan transversal bahan basis gigitiruan resin akrilik polimerisasi panas yang tidak dilakukan dan dilakukan thermocycling. Jenis penelitian ini adalah eksperimental laboratoris. Pembuatan sampel untuk pengujian kekuatan impak dan transversal masing- masing sebanyak 30 sampel dilakukan di Unit UJI Laboratorium Dental FKG USU. Kelompok pengujian impak dan transversal masing-masing dibagi atas enam kelompok yang terdiri dari kelompok tanpa penambahan serat dan tidak dilakukan thermocycling, kelompok dengan penambahan serat Ribbond THM dan tidak dilakukan thermocycling, kelompok dengan penambahan serat Ribbond Ultra dan tidak dilakukan thermocycling, kelompok tanpa penambahan serat dan dilakukan thermocycling, kelompok dengan penambahan serat Ribbond THM dan dilakukan thermocycling, dan kelompok dengan penambahan serat Ribbond Ultra dan dilakukan thermocycling. Pengaruh thermocyling terhadap kekuatan impak dan transversal bahan basis gigitiruan resin akrilik polimerisasi panas dengan dan tanpa penambahan serat polietilen Ribbond THM dan Ribbond Ultra dianalisis dengan uji T. Pengaruh penambahan serat Ribbond THM dan Ribbond Ultra terhadap kekuatan impak dan transversal bahan basis gigitiruan resin akrilik polimerisasi panas yang tidak dilakukan dan dilakukan thermocycling dianalisis dengan One Way ANOVA. Analisis LSD kemudian dilakukan untuk melihat serat polietilen Ribbond yang memiliki pengaruh terbaik terhadap peningkatan kekuatan impak dan transversal pada bahan basis gigitiruan resin akrilik polimerisasi panas. Hasil penelitian menunjukkan bahwa ada pengaruh thermocycling terhadap nilai kekuatan impak bahan basis gigitiruan resin akrilik polimerisasi panas tanpa penambahan serat Ribbond THM dan Ribbond Ultra. Tidak ada pengaruh thermocycling terhadap nilai kekuatan impak bahan basis gigitiruan resin akrilik polimerisasi panas dengan penambahan serat Ribbond THM. Ada pengaruh thermocycling terhadap nilai kekuatan transversal bahan basis gigitiruan resin akrilik polimerisasi panas dengan penambahan Ribbond THM. Tidak ada pengaruh thermocycling terhadap nilai kekuatan transversal bahan basis gigitiruan resin akrilik polimerisasi panas tanpa penambahan serat dan dengan penambahan serat Ribbond Ultra. Ada pengaruh penambahan serat polietilen pada bahan basis gigitiruan resin akrilik polimerisasi panas yang tidak dan yang di thermocycling terhadap nilai kekuatan impak. Ada pengaruh penambahan serat polietilen pada bahan basis gigitiruan resin akrilik polimerisasi panas yang tidak dan yang di thermocycling terhadap nilai kekuatan transversal. Nilai rerata pada Ribbond THM menunjukkan kekuatan impak yang paling signifikan meningkat setelah dilakukan thermocycling dengan nilai 38,875±0,6652 KJ/m2 (nilai p= 0,000) dan kekuatan transversal tertinggi 83,15±0,9361 MPa (nilai p= 0,000). Pengaruh signifikan dari kekuatan impak dan kekuatan transversal bahan basis gigitiruan polimerisasi panas yang diberikan penambahan serat Ribbond THM masih dapat diterima walaupun terjadi penurunan nilai kekuatan impak dan transversalnya setelah di thermocycling. Basis gigitiruan yang diberikan penguat serat akan meningkatkan sifat mekanisnya sehingga meningkatkan penggunaan klinis gigitiruan resin akrilik polimerisasi panas.

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    Repositori Institusi Universitas Sumatera Utara (RI-USU)
    Universitas Sumatera Utara | Perpustakaan | Resource Guide | Katalog Perpustakaan
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
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