Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Padjadjaran Journal of Dentistry Farmasains : Jurnal Ilmiah Ilmu Kefarmasian
Hakim, Muhammad Lukman Nur
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Hardness evaluation of dental composites fabricated from the uniform size and well-distributed zirconia-alumina-silica fillers with sol-gel technique Hakim, Muhammad Lukman Nur; Faza, Yanwar; Hasratiningsih, Zulia; Djustiana, Nina; Sunendar, Bambang
Padjadjaran Journal of Dentistry Vol 30, No 2 (2018): July 2018
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.347 KB) | DOI: 10.24198/pjd.vol30no2.18319

Abstract

Introduction: Several factor limits of services of dental composite have triggered further improvement. ZrO2-Al2O3-SiO2 system as filler of dental composite had been developed with sol-gel technique. Ultrasonic homogeniser were reported to change the particle size ditribution or shape. Unifom size and distribution of particle is believed to help define the behavior of hardness properties. Methods: The study was an laboratory experimental design. Filler ZrO2-Al2O3-SiO2 system were developed via sol-gel methods. Post calcination process, filler were immerse in ethanol and applied with ultrasonic homogeniser, with various amplitude i.e 50 rpm, 60 rpm and 80 rpm then named sample A, B, and C. XRD, SEM anda PSA were used to characterize of filler system. Subsequent filler were used to fabricate dental composite then evaluate the hardness value using micro-hardness tester. One–way ANOVA was used to analysis the statistical result of hardness value. Results: XRD pattern of three sample were similar in which tetragonal zirconia was prominent (57-61 %) followed by monoclinic zirconia (24-25%) and amorphous (15-17 %). While, SEM and PSA characterization showed amplitude 50 rpm (sample A) produce more uniform size and well-distributed particle filler than the others. In contrary, sample B and C showed higher peak in PSA results. It means there was dominating of filler with particular size.  However, the hardness value did not show significant differences between those filler (p>0,05). Conclusion: Dental composite that contain of different uniformity and distribution of filler ZrO2-Al2O3-SiO2 system has no significantly differences of hardness value.
SISTEM PENGHANTARAN OBAT KOAMORF : PREPARASI DAN PEMILIHAN KOFORMER Hakim, Muhammad Lukman Nur; Rusdiana, Taofik
Farmasains : Jurnal Ilmiah Ilmu Kefarmasian Vol. 9 No. 2 (2022)
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/farmasains.v9i2.7121

Abstract

Saat ini berbagai macam metode dan teknik untuk memperbaiki sifat fisik seperti kelarutan dan disolusi dari obat-obat golongan BCS (Biopharmaceutical Classification System) kelas II dan IV telah banyak dikaji, diantaranya sistem penghantaran obat ko-amorf. Sistem penghantaran obat ko-amorf (co-amorphous drug delivery system) adalah sistem penghantaran obat dengan kombinasi dari dua atau lebih komponen dengan bobot molekul yang rendah dan membentuk sistem fase tunggal homogen. Sistem ko-amorf memiliki keunggulan kelarutan dan kestabilan yang tinggi dibandingkan sistem lain seperti kokristal karena interaksi antarmolekul yang spesifik. Tujuan review ini adalah untuk mengkaji aspek preparasi dan pemilihan co-former dalam menghasilkan sistem ko-amorf yang baik. Metode pada review ini yaitu studi literatur dengan hasil berupa teknik preparasi, pemilihan zat aktif, kombinasi dengan eksipien, sampai dengan metode serta mekanisme yang diperoleh harus diperhatikan dalam formulasi. Parameter yang berpengaruh dalam pemilihan co-former yang baik adalah sifat fisikokimia zat aktif serta eksipien dan tendensi kristalisasi materi.
Co-Authors Bambang Sunendar Nina Djustiana Taofik Rusdiana Yanwar Faza Zulia Hasratiningsih, Zulia