<p>Uji kekerasan fiber reinforced composite dengan e-glass fiber dental dan e-glass fiber nondental</p><p>Hardness test of reinforced composite fibre on e-glass dental fibre and non-dental fibre</p>

Abstract

Salah satu alternatif bahan yang digunakan sebagai gigi tiruan cekat adalah fiber reinforced composite (FRC) yaitu kombinasi fiber dan matriks resin. Fiber yang sering digunakan di kedokteran gigi adalah e-glass fiber. Kekurangan e-glass fiber dental adalah modulus tensile rendah, self abrasive, ketahanan fatique rendah, dan harga relatif mahal. E-glass fiber non-dental dipilih sebagai alternatif karena kompisisinya hampir sama dengan e-glass fiber dental. Tujuan penelitian ini adalah untuk mengetahui hasil uji perbedaan kekerasan fiber reinforced composite antara e-glass fiber dental dan e-glass fiber non-dental. Metode: Jenis penelitian eksperimental murni. Sampel berbentuk silindris dengan diameter 4 mm dan tinggi 2 mm, terdiri dari 3 kelompok; kelompok e-glass fiber dental, e-glass fiber nondental, dan kelompok tanpa fiber sebagai kontrol negatif; masing-masing terdiri dari 4 sampel. Kelompok e-glass fiber non-dental dan e-glass fiber dental diberi silane. Uji kekerasan dilakukan dengan Vickers Hardness Testing Machine dengan beban 294,2 N selama 10-15 detik. Analisa statistik menggunakan independent sample t-test. Hasil: Nilai kekerasan e-glass fiber dental 60,83 VHN, e-glass non-dental 53,56 VHN, dan kelompok tanpa fiber 48,23 VHN. Nilai signifikasi yang diperoleh adalah p = 0,000; di mana p < 0,05, artinya terdapat perbedaan signifikan antara kekerasan FRC dengan e-glass fiber dental dan FRC dengan e-glass fiber non-dental. Simpulan: Terdapat perbedaan kekerasan antara FRC dengan e-glass fiber dental dan non-dental, di mana kekerasan FRC dengan e-glass fiber dental lebih tinggi dibandingkan dengan FRC dengan e-glass fiber non-dental. Kata kunci: Kekerasan, fiber reinforced composite, glass fiber dental, glass fiber non-dental Hardness test of dental and non-dental e-glass fiber reinforced composite ABSTRACT Introduction: One alternative material can be used as fixed denture is fiber reinforced composite (FRC), from a combination of fiber and resin matrix. Fiber often used in dentistry is e-glass fiber. The disadvantages of dental e-glass fiber are low tensile modulus, self abrasive, low resistance to fatique, and relatively high prices. Non-dental e-glass fiber was chosen as an alternative because the composition is almost the same as dental e-glass fiber. The purpose of this study was to determine the hardness difference test result between dental and non-dental glass fiber reinforced composite. Methods: This research was true experimental research. The samples were cylindrical with a diameter of 4 mm and the height of 2 mm, consisted of 3 groups; the dental e-glass fiber group, non-dental e-glass fiber group, and non-fiber group as negative controls; each consisted of 4 samples. The group of non-dental e-glass fiber and dental e-glass fiber was given silane. The hardness test was carried out with the Vickers Hardness Testing Machine with a load of 294.2 N for 10-15 seconds. Statistical analysis was performed using independent sample t-test. Results: The hardness value of dental e-glass fiber reinforced c...

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“…If the drying time is too short, the adsorption of the outermost and intermediate layers will be imperfect, weakening the bonds formed by the silane [30]. Silanization is a reaction consisting of two stages, called hydrolysis and condensation [31]. The hydrolysis process occurs at the beginning of the silane coupling agent drying process, where the hydroxyl groups on the fiber surface react with the silane groups in the silanes to form alkoxysilane groups.…”

Pengaruh penambahan silane coupling agent terhadap kekerasan e-glass fiber non dental reinforced composite pada gigi tiruan cekat: studi eksperimental

“…Berdasarkan keterbatasan tersebut maka tersedia E-glass fiber non dental di banyak tempat dengan harga yang terjangkau, yang biasa digunakan secara umum di dunia teknik, otomotif, kesehatan, kelautan, serta penguat pada pembuatan gypsum. 7 Komposisi E-glass fiber non dental telah diteliti. Penelitian ini dilakukan oleh Sari et al, 8 menyatakan bahwa komposisi E-glass fiber non dental memiliki kandungan oksidasi terbesar yaitu SiO2 (39,53%), CaO (46,31%), Al203 (8,17%), dan K2O (0,64%) tanpa kandungan B2O3.…”