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All Journal Jurnal Kedokteran Gigi Universitas Padjadjaran Padjadjaran Journal of Dentistry B-Dent, Jurnal Kedokteran Gigi Universitas Baiturrahmah Padjadjaran Journal of Dental Researchers and Students Makara Journal of Science
Yanwar Faza
Faculty Of Dentistry Universitas Padjadjaran
Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Flexural properties of electrospun polymethyl methacrylate microfiber-reinforced BisGMA for dental post prefabrication Djustiana, Nina; Faza, Yanwar; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 33, No 3 (2021): November
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol33no3.36255

Abstract

Introduction: A dental post is a restoration to preserve the remaining tooth structure thus can be functioned normally. Many researchers suggested a fiber dental post due to its biomechanical properties that are similar to dentin structure. This study aims to analyse the flexural properties of electrospun polymethyl methacrylate microfiber-reinforced BisGMA for dental post prefabrication. Methods: The sample used was following the ADA guideline, as well as for the number of samples. The sample size was 25×2×2mm, which is close to the average dental post size. PMMA microfibers were prepared by dissolving heat cure PMMA powder with 99% acetone, then electrospinning with a rotary collector. Acquired PMMA microfibers were immersed into the resin matrix containing BisGMA, camphorquinone, and 2-dimethylaminoethyl methacrylate (DMAEMA) as a monomer, initiator, and co-initiator, respectively, to prepare the dental posts. Results: PMMA microfibers structure and surface fracture of dental posts were confirmed by Scanning Electron Microscopy (SEM). PMMA microfibers show unaligned fiber morphology with an approximate diameter size of 1-5 µm.  A universal testing machine was used to measure the dental post's flexural properties (flexural strength and flexural modulus). Dental posts with PMMA fibers showed higher flexural strength (83.5 ± 10.7 MPa) compared to the dental post without PMMA fibers (61.7 ± 3.03 MPa) with a p-value <0.05. On the other hand, PMMA fibers' addition did not significantly increase the dental post's flexural modulus. Conclusion: The PMMA microfibers can intimately adhere to the BisGMA mixture as the resin matrix. Therefore, the PMMA microfiber significantly improves the flexural strength of the BisGMA for dental post prefabrication.
Comparison of brittleness and flowability between Cipetir Gutta-Percha and commercial Gutta-Percha Usri, Kosterman; Faza, Yanwar; Sanjaya, Arya; Viona, Nona; Djustiana, Nina; Karlina, Elin; Febrida, Renny; Cahyanto, Arief
Padjadjaran Journal of Dentistry Vol 34, No 1 (2022): March
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no1.38869

Abstract

Introduction: Gutta-Percha (GP) is a standard endodontic filling material found in pure form in the Cipetir area, Indonesia. However, a study comparing physical properties (brittleness and flowability) between pure GP and commercially used GP has not been found. Therefore, this study aims to test the brittleness and flowability of Cipetir GP compared to commercial GP. Methods: This study was quasi-experimental. Forty samples were prepared for each material and test, according to ANSI/ADA specification-GP cones-no 78 in 2006. The first step began by making a sample of Cipetir GP using moulds from a cuvette, commercial GP (Inline #80), and gypsum stone. The second step was to test the brittleness (Crease Recovery Tester) and flowability (according to ADA No. 78 of 2000) of Cipetir GP and commercial GP. Results: The brittleness test of Cipetir GP showed unbroken samples, and the commercial GP showed four broken samples. The Fisher's Exact test showed a p-value of 0.087, which means there was no significant difference in brittleness between Cipetir GP and commercial GP. At the same time, the average value of flowability of Cipetir GP and commercial GP were 6.46 mm and 0.19 mm, respectively. The unpaired t-test showed a p-value<0.05, which means there was a significant difference in the flowability between Cipetir GP and commercial GP. Conclusions: There is a brittleness similarity between Cipetir GP and commercial GP, while the flowability value of Cipetir GP is higher than commercial GP. Those initial findings showed that the Cipetir GP might become an excellent candidate to be an alternative endodontic filling.
INFLUENCE OF HCL 0.02 M ON PHASE AND SIZE OF CaCO3 VIA FINE BUBBLE DIFFUSER METHOD AS DENTAL BIOMATERIAL Febrida, Renny; Setyanagari, Sekar Diva; Faza, Yanwar
B-Dent: Jurnal Kedokteran Gigi Universitas Baiturrahmah Vol 10, No 2 (2023): Vol 10 No 2, Desember 2023
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33854/jbd.v10i2.1512

Abstract

Background. Particles of calcium carbonate (CaCO3) have been applied in a number of fields, including as dental biomaterial. Because CaCO3 particles have three distinct polymorphs and complex crystallization behavior, it is difficult to systematically adjust their physical properties for desired applications. Objective. This investigation aims to examine the influence of the addition of the 0.02 M HCl additive on the phase and size of the CaCO3 particles synthesized with the fine bubble diffuser method. Methods. The type of research is descriptive explorative. There were two sample groups in this study, and each group had three replications (n = 3). Group 1 added 0.02 M of HCl as an addition to the as-prepared material, while Group 2 added no HCl at all. The phase of CaCO3 was evaluated by using the FTIR (Thermo Scientific Nicolet iS5), while the particle size was measured via DLS (Horiba Scientifica SZ-100 Nanopartica) Result. The results showed the sample of CaCO3 without any additive posesses Amorphous Calcium Carbonate (ACC) and calcite. Meanwhile, sample of CaCO3 with addition of HCL 0.02 M showed ACC, calcites and vaterite phase. Particle size of CaCO3 without additve is larger than another one. Conclusion. In this study, the addition of the additive HCl 0.02 resulted in a decrease in the pH of the solution resulting in a phase change from clacite to vaterite as well as decreasing the particle size of CaCO3.
SURFACE MODIFICATION OF ALUMINA-SILICA BY ADDITIVE AGENT USING SOL-GEL METHOD AS FILLER DENTAL COMPOSITE Faza, Yanwar; Takarini, Veni; Febrida, Renny; Karlina, Elin
B-Dent: Jurnal Kedokteran Gigi Universitas Baiturrahmah Vol 10, No 2 (2023): Vol 10 No 2, Desember 2023
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33854/jbd.v10i2.1506

Abstract

Background: Macro-sized and inhomogeneous distribution of ceramic filer particles make it difficult to obtain smooth surfaces of dental composite after polishing. Objective. This study aims to synthesize alumina silica (Al2O3-SiO2) fillers using sol gel method with the additives agent chitosan 5%, 10% and polyethylene glycol (PEG) 5% to produce micro particle size and evenly distributed particle as filler dental composite. Methods. The type of research is descriptive explorative. The sol-gel process was utilized to synthesize filler particles of Al2O3-SiO2. TEOS was dissolved in ethanol and mixed with acetic acid as catalyts. Al2(NO3)3 was added into the solution and mixed homogenously. Subsequently, the additive agents (Chitosan 5%, chitosan 10% and PEG) were mixed into the mixture for 30 minutes. Drying the samples for 48 hours at 60°C in the oven. The Dynamic light scattering (DLS) SZ-1 was used to evaluate the size, particle distribution and zeta potential. Result. The results showed that the addition of chitosan 10% produced a smaller size of Al2O3-SiO2 compared to other samples. A homogeneous particle distribution is shown in the sample with PEG 5%. Meanwhile, zeta potential values of the filler particles Al2O3-SiO2 with the addition of chitosan 10% shows the biggest value. Conclusion: The additive agent of chitosan 10% can modify the surface of filler Al2O3-SiO2 in order to inhibit particle growth more effectively but better particle distribution is shown in samples with PEG 5% due to the lower viscosity than chitosan thus it is easily homogenized in the solution
Co-Authors Alex Kesuma Andiesta, Niekla Survia Andri Hardiansyah Arief Cahyanto Azzahra, Fauziah Bambang Sunendar Cahyanto, Arief Eddy, Diana Rakhmawati Elin Karlina Elin Karlina Hakim, Muhammad Lukman Nur Hakim, Muhammad Lukman Nur Hardiansyah, Andri Kosterman Usri, Kosterman Muhammad Asrun Adi Saputra Syam Nabillah Salma, Dinda Jihan Nina Djustiana Nina Djustiana Nina Djustiana Renny Febrida Sanjaya, Arya Setyanagari, Sekar Diva Solihudin, Solihudin Veni Takarini Viona, Nona Wijaya, Dissa Kirana Wulanhapsari, Madeiva Zulia Hasratiningsih, Zulia