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All Journal Jurnal Kedokteran Gigi Universitas Padjadjaran Padjadjaran Journal of Dentistry Journal of Dentomaxillofacial Science B-Dent, Jurnal Kedokteran Gigi Universitas Baiturrahmah Padjadjaran Journal of Dental Researchers and Students PREPOTIF : Jurnal Kesehatan Masyarakat Jurnal Material Kedokteran Gigi

Renny Febrida

Laboratory Of Material Processing, Department Of Engineering Physics, Institute Of Technology Bandung, Bandung 40132, Jawa Barat

Author-ID : 2541317

Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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The comparison of surface roughness value of microfilled and nano particle composite restoration that polish using rubber cups Gita Retyoningrum; Rizki Yuli Amanda; HD Adhita Dharsono; Renny Febrida
Padjadjaran Journal of Dentistry Vol 21, No 3 (2009): November 2009
Publisher : Faculty of Dentistry Universitas Padjadjaran

Surface roughness composite restoration can decrease aesthetic aspect of composite restoration and facilitated bacterial retention. It can affect periodontal disease and recurrent caries. Polishing is a process to obtain a smooth and glossy surface of restoration. Rubber cups is one of polishing instrument that frequently used to get a smooth, glossy and aesthetic surface of restoration. The specimen was micro filled (3M ESPE Z100TM Restorative, St. Paul) and nano particle (3M ESPE Z350TM Restorative, St. Paul) composite resin blocks sized 5x5x2 mm. Each of composite consists of ten specimens that polished with rubber cups for 30 seconds at 3500 rpm. Surface roughness was measured five times for each specimen by using surface roughness tester. Average Ra value of micro filled was 0.22 μm and Ra value of nano particle was 0.25 μm. Data were analyzed by using independent t-test at α 0.05 significance level and showed statistically significant differences. The conclusion of this experiment showed that surface roughness value of micro filled composite resin was smaller than nano particle composite resin restoration. A small amount of filler particle (50.6% wt) made micro filled easier to polish and made a smooth surface restoration. Nano particle composition has more filler particle amount (78.5% wt), and hard zirconia filler that difficult to polish than silica colloidal filler in microfilled composite resin.

Pengaruh partikel filler terhadap modulus elastisitas resin komposit Effect of filler particles on the elastic moduli of resin composites Veni Takarini; Nina Djustiana; Renny Febrida
Journal of Dentomaxillofacial Science Vol. 11 No. 1 (2012): Formerly Jurnal Dentofasial ISSN 1412-8926
Publisher : DiscoverSys Inc.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15562/jdmfs.v11i1.292

Modulus of elasticity is one of the mechanical properties of composite resins affects the resistance to deformation,the strength of bonding with tooth structure and wear resistance. Modulus of elasticity is determined by the volumefraction of filler particles as the inorganic phase composite resin. This literature study aims to evaluate the size,shape and type of filler particles that affect the modulus of elasticity for composite resin. In a constant volumefraction, the larger size of filler material tends to make more rigid while irregular shape of particles produceshigher modulus of elasticity than spherical form of particles. In addition, the type of filler particles also determinesthe modulus of elasticity for resin composite, such as silica as the main type of filler particles will enhance themodulus of elasticity whereas zirconium can result in a higher stiffness. In order to get composite resin restorationwith appropriate modulus of elasticity the necessary knowledge about the effect of different filler particle isrequired.

Analisis Mikrostruktur Partikel Zirkoniakalsia-silika (ZrO 2 -CaO-SiO ) Dari Pasir Zirkon Alam Indonesia Menggunakan Metode Spray Pyrolysis Elin Karlina; Nina Djustiana; I Made Joni; Renny Febrida; Camellia Panatarani; Akhyar Dyni Zakyah
Jurnal Material Kedokteran Gigi Vol 6 No 1 (2017): JMKG Vol 6 No 1 Maret 2017
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Indonesian Natural Sand, Zircon, is an Indonesia’s natural resource that contains zirconia, silica, titania and alumina. In Dentistry, zirconia as one of the content in natural zircon sand, have the potential to be the material for filler composites. The purpose of this research was to analyze the Zirconia-Calcium-Silicate Particle (ZrO2CaO-SiO2) synthesized from Indonesia natural sand, zircon, in microstructural way. Methods: By synthesizing ZirconiaCalcium-Silicate particle (ZrO2-CaO-SiO2) from Indonesia natural zircon sand, using spray pyrolysis method. A precursor solution that is used consists of zirconil nitrate (Zr (NO3) 2), sodium silicate (Na2SiO3), and calcium hydroxide (Ca (OH) 2). Variations in the temperature of the reactor that are used were 4000C, 4500C, and 5000C with a feed rate of 6 L / min and a piezoelectric frequency of 1.7 MHz. Result showed that the better content in zirconia-calcium-silicate is the one that was synthesized at a temperature of 4500C, based on the results of EDS, SEM and XRD. The composition that is obtained in the zirconia-calcium-silicate particle has a ratio of 1: 14: 4 with the size of 500-1000nm, and has a tetragonal crystal zirconium silicate structure and dicalcium monoclinic silicate. From this research it can be concluded that the result that was synthesized at a temperature of 4500C is adequate to use as a filler based on the characterization result of SEM and XRD.

SYNTHESIS AND CHARACTERIZATION OF MULLITE-ZIRCONIA NANO PARTICLES BY SOL-GEL METHOD AS FILLER OF DENTAL COMPOSITE Faza, Yanwar; Febrida, Renny
B-Dent: Jurnal Kedokteran Gigi Universitas Baiturrahmah Vol 11, No 1 (2024): Vol 11 No 1, Juni 2024
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33854/jbd.v11i1.1611

Background. Currently, researchers are working on the development of dental composite fillers that are composed of a combination of two or more inorganic materials. Objective. The study aims to synthesis mullite-zirconia using the sol-gel method and observe the influence of zirconia on the particle characteristics of the filler including the size of the diameter, distribution and charge of the filler. Methods. The design of this study is descriptive explorative. The study consisted of four sample groups: 100% mullite (M); 85% Muliite - 15% zirconia (MZ15); 80% Mullite - 20% circonia(MZ20); 75% mullites - 25% zirconía (MZ25). The mullite-zirconia filler synthesis was initiated by mixing the hydrolyzed-precursor after hydrolysis stage then were dried for 6 hours at 100 °C. The ZrO2 was mixed with the Mullite according to the prescribed ratio. The sample was then characterized using Particle size analysis and Zeta potential (HORIBA) Result. The results showed that the mullite-zirconia particle sizes decrease as the amount of zirconia added after the hydrolysis phase increases. Sample M, MZ15 and MZ20 showed polydisperse particle distribution while MZ25 showed monodispersed particle distribution. Mullite and mullite-zirconia particle loads in the range of 10-30 mV. This shows that the stability of the particle is incipient Conclusion. Nano-sized mullite-zirconia particles were successfully synthesized using sol-gel methods. Increased zirconium in the mullite-zirconia ratio decreased the diameter of the particle and particle load and resulted in a more homogeneous particle distribution

THE EFFECT OF PRECURSOR CONCENTRATION, pH OF THE SOLUTION AND CARBONATION DURATION ON CACO3 PARTICLE SIZE VIA CARBONATION METHOD Febrida, Renny; Faza, Yanwar
B-Dent: Jurnal Kedokteran Gigi Universitas Baiturrahmah Vol 11, No 1 (2024): Vol 11 No 1, Juni 2024
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33854/jbd.v11i1.1610

Background. There are multiple techniques for generating CaCO3, one of which is the carbonation method. Currently, the particle size of CaCO3 is primarily determined by the combined influence of various variables. Objective. This study investigates the effect of precursor concentrations, pH of the solution, and carbonation duration on the size of CaCO3 particles Methods. The type of research in this study is experimental laboratory with a descriptive presentation of data. This study is divided into two stages: first, synthesis of CaCO3 with different concentration of precursors and carbonation duration. Second, it used different pH value of the solution and carbonation duration. The particle size of CaCO3 were characterized using the Particle Size Analyzer (PSA) (Horiba Scientific SZ-100 Nanopartica). Result. The result show the smallest CaCO3 at first stage, 548 nm, obtained at concentration of 0.75 M with carbonation duration of 30 minutes. The largest CaCO3-size, 6194 nm, is seen at a 0.5 M concentration with a carbonation duration of 10 minutes. The second stage show the smallest particle size, 1165 nm, obtained at a pH value of 8 with a carbonation duration of 60 minutes. Meanwhile, the largest size, 5621 nm, is obtaining at a pH value of 9 with a carbonation duration of 90 minutes Conclusion. The concentration of precursors and the duration of carbonation have no effect on the size of CaCO3 particles, however the pH value of the solution may affect the particle size of CaCO3. It is directly proportional to the pH value of the solution

Effect of 3-methacryloxypropyltrimethoxysilane on diametral tensile strength of rice husk silica-based dental composite Febrida, Renny; Wulanhapsari, Madeiva; Faza, Yanwar; Karlina, Elin; Cahyanto, Arief; Solihudin, Solihudin; Eddy, Diana Rakhmawati
Padjadjaran Journal of Dentistry Vol 34, No 2 (2022): July
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no2.41242

ABSTRACTIntroduction: Rice husk silica has been studied as a filler in dental composite, however, the mechanical properties of the resulting composites are below the commercial due to the poor surface modification between silica and resin matrix. 3-methacryloxyprpyltrimethoxysilane (MPTS) is one of the coupling agents that are effective to modify the silica surface. The purpose of this study to analyze the effect of MPTS on the diametral tensile strength (DTS) of the self-made composite using rice husk silica. Methods: The research type of this study was an experimental research laboratory. The samples (26 samples) were divided into two groups, namely the test group (using MPTS-modified silica) and the control group (using non-modified silica). The samples were cylindrical in shape with a diameter of 6.0 ± 0.1 mm and a height of 3.0 ± 0.1 mm according to ANSI/ADAS No. 27, 1993 and ISO 4049, 1988. The Fourier Transform Infrared (FTIR), HORIBA, was used to characterize the MPTS grafting on the silica surface. The DTS value is measured by Universal Testing Machine (UTM), Lloyd LRX Plus. Results: FTIR presents the additional peak of carboxyl and methacryloyl group at 1716, 1555, and 1410 cm-1 wavenumber, respectively in MPTS-modified silica. The DTS value of the test group was 43.40 ± 4.43 MPa and the control group was 25.80 ± 2.63 MPa. The test group was significantly higher than the control group (p-value = 0.001). Conclusion: The MPTS is effective to enhance the DTS value of rice husk silica-based composite.Keywords: Rice husk silica; dental composite; diametral tensile strength; 3-methacryloxypropyltrimethoxysilane.

Preparation of micro-calcite powder using fine-bubble assisted carbonation as toothpaste material Febrida, Renny; Nabillah Salma, Dinda Jihan; Azzahra, Fauziah; Karlina, Elin; Andiesta, Niekla Survia; Faza, Yanwar
Padjadjaran Journal of Dentistry Vol 35, No 1 (2023): March 2023
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol35no1.44519

ABSTRACTIntroduction: Calcite (CaCO3) is typically used in commercial toothpaste with particle size ranges from 1-12 μm. In the latest study, calcite was synthesized by using Ca(OH)2 precursor from natural resources However, the resulting particle size does not match the size of the toothpaste filler. This study aims to prepare micro-calcite via fine-bubble assisted carbonation as toothpaste material. Methods: The calcite powder was prepared from Ca(OH)2 analytical grade powder utilizing the fine-bubble carbonation process with the Ca(OH)2 concentration and initial pH variation. The study was started by making a Ca(OH)2 suspension with a concentration of 0.25, 0.5, 0.75, 1 and 1.25 M using 2.000 ml methanol as a solvent. 0.5 M NaH2PO4 solutions were utilized to adjust the initial pH of 0.5 M Ca(OH)2 suspension into 8, 9, and 10. The suspensions were aerated using CO2 fine-bubble for two hours to produce CaCO3 samples. All precipitated CaCO3 particles were characterized by PSA, Zeta-Potential, and FTIR measurements. Results: The calcite phase was identified from the FTIR transmittance. Aragonite or vaterite phase was not observed in the samples. PSA result shows the size of CaCO3 particles from samples 0.25 M to 1.25 M are as follows 3.03, 3.23, 2.79, 3.70, 0.99 μm respectively. Meanwhile, the particle sizes of CaCO3 in samples with a pH of 8, 9 and 10 are 3.00, 2.03 and 2.50 μm respectively. The zeta potential shows the value ranges from -23.2 mV to -11.9 mV, indicating fair dispersion ability. Conclusion: The fine bubble assisted carbonation method in this study helps in producing calcite in micron size that could be used as alternative fillers for toothpaste.Keywords: calcite, fine-bubble, carbonation, particle size, toothpaste

The effect of ZrCl4, Al(NO3)3 and Na2SiO3 precursors concentration on particle size as dental composites filler through spray pyrolysis method Karlina, Elin; Idznihaq, Khairina; Febrida, Renny; Andiesta, Niekla Survia
Padjadjaran Journal of Dentistry Vol 35, No 1 (2023): March 2023
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol35no1.44518

ABSTRACTIntroduction: one of the important components in dental composites is a filler which can be made through various methods, including spray pyrolysis. In the spray pyrolysis method, some factors determine the size and morphology of the resulting filler particles, one of which is the concentration of precursors. This study aimed to analyze the effect of precursor concentration on the particle size produced using the spray pyrolysis method. Methods: in this experimental laboratory study, zirconia-alumina-silica particles were synthesized using the spray pyrolysis method. The precursor solution consisted of ZrCl4, Al (NO3)3, and Na2SiO3 with a concentration variation of (0.1; 0.2; and 0.3) M. The furnace temperature was set at 750°C, and the electric precipitator temperature was 100°C with a feed rate of 3L/min. Then, the tests performed were using PSA (Particle Size Analyzer), and XRF (X-Ray Fluorescence). Results: The results showed that the best zirconia alumina silica filler particle with the smallest size is the result with a concentration of 0.1 M and its size was 618.6 nm. The particle size for 0.2 M was 911.9 nm and 1799.4 nm for 0.3 M. According to XRF test results the zirconia alumina silica filler system contains all the precursor elements. Conclusions: The effect of precursor concentration on the particle size produced using the spray pyrolysis method showed that the smaller the precursor concentration used, the smaller the particle size produced. The best results from synthesizing a filler system with a concentration of 0.1 M precursor solution. All the results are in submicron and micron size, and could be used as the component of dental composites.Keywords: precursors concentration, particle size, spray pyrolysis, dental composites filler

Effect of mixed water and methanol solvents ratio on the CaCO3 characteristics via fine bubble diffuser as a dental biomaterial Febrida, Renny; Ramadhan, Muhammad Farhan; Karlina, Elin; Andiesta, Niekla Survia
Padjadjaran Journal of Dental Researchers and Students Vol 7, No 1 (2023): February 2023
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v7i1.40418

ABSTRACTIntroduction: The application of calcium carbonate in dental biomaterial depends on the charcateristics after the synthesis process. This study aims to determine the effect of the ratio of methanol and water on the characteristics of the CaCo3 produced through the fine bubble diffuser method. Methods: Synthesis of calcium carbonate by CO2 carbonation method using fine bubble diffuser to produce fine CO2 bubbles (bubble size range 100-500 nm). The Ca(OH)2 precursor was dissolved in various ratios of water and methanol mixtures, namely: 25% water 75% methanol, 20% water 80% methanol, 15% water 85% methanol, 10% water 90% methanol, 5% water 95% methanol, and 100% methanol. The suspension was carbonated using CO2 fine bubbles for 2 hours to produce CaCO3 powder. The resulting calcium carbonate powder was tested with FTIR (Fourier Transform Infra Red), PSA (Particle Size Analyzer), and Zeta-Potential. Results: The FTIR test obtained the wave numbers of calcite (712 cm-1), vaterite (744, 873, 874, and 875 cm-1) and aragonite (848, 849, and 854 cm-1) phases in the six variations of the solvent used. The PSA test showed that the particle size produced was submicron with the smallest size being 191.1 nm and the largest being 576.2 nm. The ZetaPotential test showed that the particles were relatively stable in solution with a Zeta-Potential value range of -15.1 mV to -20.8 mV and particles with moderate stability -21.2 mV to -25.1 mV. Conclusion: The addition of the organic solvent methanol to water increases the solubility of CaOH and increases the formation of the vaterite phase. Increasing the amount of water decreases the amount of vaterite phase, increasing the particle size and zeta potential value. but the addition of 15% water decreases the particle size of CaCO3 KEY WORDSCaCO3, fine bubble diffuser, FTIR, PSA, zeta potential Pengaruh perbandingan campuran pelarut air dan metanol terhadap karakteristik CaCO3 melalui metode fine bubble diffuser sebagai biomaterial kedokteran gigiABSTRAKPendahuluan: Kalsium karbonat (CaCO3) merupakan salah satu sumber kalsium yang umum digunakan di bidang biomaterial kedokteran gigi. Aplikasi kalsium karbonat tergantung dari fasa dan ukuran partikelnya. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan metanol dan air terhadap karakteristik CaCO3 yang dihasilkan melalui metode fine bubble diffuser. Metode: Prekursor Ca(OH)2 dilarutkan dengan berbagai variasi campuran pelarut air dan metanol, yaitu: 25% air 75% metanol, 20% air 80% metanol, 15% air 85% metanol, 10% air 90% metanol, 5% air 95% metanol, dan 100% metanol. Suspensi Ca(OH)2 dikarbonasi menggunakan gelembung halus CO2 selama 2 jam untuk menghasilkan bubuk CaCO3. Bubuk CaCO3 yang dihasilkan diuji dengan FTIR (Fourier Transform Infra Red), PSA (Particle Size Analyzer), dan ZetaPotential. Hasil: Uji FTIR didapatkan bilangan gelombang fasa kalsit (712 cm-1 ), vaterit (744, 873, 874, dan 875 cm-1 ) dan aragonit (848, 849, dan 854 cm-1 ) pada keenam variasi pelarut yang digunakan. Uji PSA didapatkan ukuran partikel terkecil 191,1 nm dan terbesar 576,2 nm. Partikel relatif stabil dalam larutan berdasarkan Uji Zeta-Potential (-15,1 mV sampai -17,8 mV) dan stabilitas moderat (-20,8 mV sampai -25,1 mV). Simpulan: Penambahan pelarut organik methanol pada pelarut air meningkatkan kelarutan CaOH dan meningkatkan pembentukan fasa vaterite. peningkatan jumlah air menurunkan jumlah fasa vaterite, meningkatkan ukuran partikel dan nilai zeta potensial. namun pada penambahan 15% air dan seterusnya menurunkan ukuran partikel CaCO3. KATA KUNCI CaCO3, fine bubble diffuser, FTIR, PSA, zeta potential

Comparison of bond strength between self-adhered and conventional composites Putra, Adria Permana; Karlina, Elin; Febrida, Renny
Padjadjaran Journal of Dentistry Vol 22, No 3 (2010): November 2010
Publisher : Faculty of Dentistry Universitas Padjadjaran

Bond strength towards dentine is a critical factor for composite restoration success. The purpose of this research was to obtain data on self-adhered composite bond strength to tooth dentine. This research was an experimental laboratory research that used 10 third molar teeth as samples. The teeth were prepared by thinning its mesial part until it reaches dentine layer. The sample was divided into two groups, each consisting of 5 teeth. In group I was applied self-adhered composite with Fusio® Liquid Dentine brand, whereas group II was applied conventional composite with Ivoclar Te-Econom Flow®. The applied composite had a cylindrical shape with 6 mm diameter. The sample was then placed on the test arm. The shear bond strength test method then conducted on Universal Testing Machine (UTM). Obtained data was tested using Two-tails Independent t-Test (α = 0,05). The results showed the average of self-adhered composite bond strength to dentine is 1,8878 ± 0,2859 MPa and conventional composite for 4,43552 ± 0,49472 MPa. The data showed that the self-adhered composite bond strength to dentine is smaller than conventional composite. From this research can be concluded that there was bond strength difference between the self-adhered composite with conventional composites towards the tooth dentine.

Co-Authors Akhyar Dyni Zakyah Alex Kesuma Andi Soufyan Andiesta, Niekla Survia Arief Cahyanto Azzahra, Fauziah Cahyanto, Arief Camellia Panatarani Denny Nurdin Eddy, Diana Rakhmawati Elin Karlina Elin Karlina Elin Karlina Ellyza Herda Gema Gempita, Gema Gita Retyoningrum Gita Retyoningrum, Gita HD Adhita Dharsono HD Adhita Dharsono, HD Adhita I Made Joni Idznihaq, Khairina Indah Permatasari Kosterman Usri, Kosterman Lisa Putri Lestari, Lisa Putri Marina Utami, Marina Munawar, Adlina Hasna Munawar, Adlina Hasna Nabillah Salma, Dinda Jihan Nina Djustiana Nina Djustiana Nina Djustiana Nina Djustiana Pramudiyanti, Nindya Putra, Adria Permana Putra, Adria Permana RAMADHAN, MUHAMMAD FARHAN Rizki Yuli Amanda Rizki Yuli Amanda, Rizki Yuli Sanjaya, Arya Setyanagari, Sekar Diva Silmina Susra Solihudin, Solihudin Susra, Silmina Veni Takarini Viona, Nona Wulanhapsari, Madeiva Yanwar Faza

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