SIFAT MEKANIK DAN FISIK 3D-PRINTED DENTAL PHOTOPOLYMER RESINS DALAM KONDISI PEMROSESAN YANG BERBEDA
Abstrak
Resin fotopolimer telah banyak digunakan dalam bidang kedokteran gigi untuk membuat restorasi gigi sementara. Penelitian ini menyajikan karakterisasi lengkap mengenai resin fotopolimer dental non-castable yang dibuat menggunakan teknologi 3D-printing Digital Light Processing (DLP). Spesimen dicetak dengan ketebalan lapisan 0,05, 0,075, dan 0,1 mm, diikuti dengan post-cured treatments di bawah sinar UV selama 10, 20, dan 30 menit. Serangkaian pengujian karakterisasi material dilakukan, meliputi uji kekerasan, kelembapan, dan pengukuran massa jenis. Hasil penelitian menunjukkan bahwa kekerasan dan kelembapan specimen dipengaruhi secara signifikan oleh post-curing time, sementara post-curing time yang lebih lama menghasilkan kekerasan spesimen yang lebih besar dan kadar air yang menurun. Peningkatan ketebalan lapisan menyebabkan penurunan nilai kekerasan secara bertahap. Nilai kekerasan maksimum 57,7 Shore D diamati pada spesimen cetak 3D, bersama dengan kadar air tertinggi 1,05% MC. Sesuai perkiraan, spesimen menunjukkan densitas yang konsisten (1,19 ± 0,02 g/cm³) di seluruh ketebalan lapisan dan variasi post-curing time. Studi ini menyoroti pentingnya pemahaman mengenai pengaruh parameter proses terhadap sifat resin fotopolimer dental-non castable sebelum diimplementasikan secara klinis.
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