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All Journal Jurnal Penelitian dan Pendidikan IPS Padjadjaran Journal of Dentistry Padjadjaran Journal of Dental Researchers and Students RESEARCH AND DEVELOPMENT JOURNAL OF EDUCATION (RDJE) Journal of Economics Research and Policy Studies Riwayat: Educational Journal of History and Humanities Jurnal Pengabdian Kepada Masyarakat Bangun Cipta, Rasa, & Karsa (Jurnal PKM BATASA)

Elin Karlina

Department of Dental Materials and Technology, Faculty of Dentistry, Universitas Padjadjaran

Author-ID : 442257

Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Dentistry Economics, Econometrics & Finance Education Health Professions Immunology & microbiology Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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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 : Faculty of Dentistry 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): Februari 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

PENGUATAN KURIKULUM MERDEKA: PERANCANGAN KURIKULUM OPERASIONAL SATUAN PENDIDIKAN (KOSP) BAGI GURU MI MIFTAHUL FALAH Rasam, Fadli; Sari, Ani Interdiana Candra; Aqil, Deden Ibnu; Karlina, Elin
Jurnal Pengabdian Kepada Masyarakat Bangun Cipta, Rasa, & Karsa Vol 4, No 2 (2025): Jurnal PKM Batasa
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/pkmbatasa.v4i2.3944

Perubahan kurikulum merupakan siklus yang harus dilaksanakan dalam sistem pendidikan nasional. Perubahan kurikulum membutuhkan pengetahuan, sikap, dan keterampilan untuk beradaptasi sesuai dengan pedoman yang berlaku. Program abdimas ini bertujuan untuk memberikan pemahaman terkini tentang pelaksanaan Kurikulum Operasional Satuan Pendidikan (KOSP) dalam pembelajaran. Metode yang digunakan dalam program ini mencakup tiga tahap utama: (1) praperencanaan, yang melibatkan identifikasi masalah, analisis, dan pencarian alternatif solusi, (2) perencanaan, yaitu merancang kegiatan berdasarkan hasil praperencanaan, dan (3) pelatihan, yaitu penerapan dari seluruh rencana yang telah disusun. Solusi yang ditawarkan melalui kegiatan ini berupa transfer ilmu pengetahuan dan teknologi (IPTEK) melalui penyampaian materi terkait permasalahan mitra serta pelatihan implementasi KOSP dan dalam proses belajar mengajar yang merupakan solusi dari permasalahan mitra. Diharapkan dengan adanya penyuluhan ini guru dan kepala sekolah dapat meningkatkan kemampuan dalam implementasi KOSP dan dalam pembelajaran sekaligus mensukseskan program pemerintah. Setelah diadakan kegiatan ini guru mulai memahami bagaimana cara mengimplementasikan KOSP dan dalam pembelajaran kepada peserta didik. Semakin baik kemampuan KOSP dan yang dimiliki oleh guru, maka akan semakin baik pula kognitif, afektif, dan psikomotorik peserta didik, yang akan bermuara tercapainya tujuan Pendidikan.

Penerapan Media Pembelajaran Daring Terhadap Minat Belajar Mahasiswa Interdiana Candra Sari, Ani; Rasam, Fadli; Karlina, Elin
Jurnal Penelitian dan Pendidikan IPS Vol. 17 No. 2 (2023): Oktober
Publisher : Direktorat Pascasarjana Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jppi.v17i2.5314

This study is entitled The Application of Online Learning Media to Students' Learning Interests during the Covid-19 Pandemic. The purpose of this study was to determine the Application of Online Learning Media to Student Learning Interests during the Covid-19 Pandemic Period of Economic Education Study Program, Indraprasta University, PGRI. The method to be used is a Completely Randomized Design experiment that does not use control and comparative classes. Researchers will use two classes, class A as experimental class 1 with zoom learning media and class B as experiment class 2 with Google Classroom learning media, from the two methods used by researchers will see and compare student learning outcomes and how student interest in learning with both media the learning. Based on the research results, it can be concluded that there is an influence of zoom learning media on student learning interest. There is an effect of GC learning media on student interest in learning. There is no difference in interest in learning through zoom and GC learning media.

Synthesis of Ca-Psz nanoparticles using sol-gel technique with chitosan as a dispersant for raw materials restoration and dental rehabilitation equipment Prameshwari, Fadilla Rizky; Karlina, Elin; Hasratiningsih, Zulia
Padjadjaran Journal of Dentistry Vol 25, No 3 (2013): November 2013
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol25no3.26809

Introduction: Zirconia (ZrO2) is a metal-free substance that rapidly improving as dental materials that has a good properties which are high biocompatibility, esthetics, and strength. Addition of a stabilizer like CaO will increase the mechanical properties of zirconia due to the transformation toughening. Methods: The Calcia Partially Stabilized Zirconia (Ca-PSZ) nanoparticles can be synthesized by using sol gel technique. This method makes easier to control the purity, homogeneity and physical characteristics at low temperature. This method consists of two stages, hydrolysis and condensation. The precursor were used Zirconium Chloride (ZrCl4) with 0,1 M concentration and Calcia as stabilizer with 7% concentration. The addition of Calcia will help the tetragonal crystals forming at low temperature. Calcination temperature was used 900o C. To prevent conglomeration or agglomeration, dispersants are needed. One of the dispersants available is chitosan. Results: X-Ray Diffraction (XRD) analysis identifies that there are tetragonal and monoclinic phase with a percentage of 85% and 15% perspectively for sample without using chitosan and 100% tetragonal for sample that using chitosan. Analysis of Scanning Electron Microscope (SEM) results that particles with chitosan are more homogenous and dispersed with smaller size produced compared to particles without chitosan. Conclusion: From the results of the analysis, Ca-PSZ with sol-gel technique can produce nanoparticle and addition of chitosan can dispersed nanoparticles that could be used as material restoration and rehabilitation component in dentistry.

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.

Analysis of porosity comparison formed on film layer of self-processed copal and alcohol based varnish against manufacture based varnish Dewi, Agustina; Hasratiningsih, Zulia; Karlina, Elin; Greviana, Nadia
Padjadjaran Journal of Dentistry Vol 28, No 3 (2016): November 2016
Publisher : Faculty of Dentistry Universitas Padjadjaran

Introduction: Varnish is one of the dental materials that can be used to protect the pulp. Raw materials for making varnish were easy to be obtained using simple technique and composition. Self-processed varnish which has 40 gr of copal, 50 ml of 95% alcohol and 10 ml of chloroform was produced. When applied, varnish formed a thin film layer which tend to porous. The purpose of this study was to analyze the comparison between porosity which formed in film layer of self-processed and factory varnish. Method: This study was true experimental with 12 third upper molars that had been cut horizontally as specimens and were divided into 2 groups as treated and control groups. First group had 1, 2, 3 and 4 times application of processed varnish as treated sample and second group samples were applied with factory varnish as control sample. Porosity was tested using SEM then its percentage was calculated by comparing the porosity and the tooth area. The data was then tested with t- independent test. Result: The result showed that self-processed varnish obtained larger percentage of porosity. Started at the third application time, both processed and factory varnish showed no porosity. Conclusion: The conclusion of this study was that there is difference between porosity which formed in film layer of self-processed and factory varnish.

Effect of acidulated phosphate fluoride application on microhardness of glass ionomer cement Izzudin, Mohammad Azrul; Karlina, Elin; Indriyanti, Ratna
Padjadjaran Journal of Dentistry Vol 27, No 2 (2015): July 2015
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol27no2.26675

Introduction: Acidulated phosphate fluoride (APF) gels are commonly used as preventive caries materials in paediatric dentistry while glass ionomer cements (GICs) are widely used as a restorative material. The purpose of this study was to determine the effect of acidulated phosphate fluoride application towards the microhardness of GIC. Methods: This study was an experimental laboratory study where ten specimens were prepared from high viscosity GIC, which was Fuji IX. Specimens were stored in 50 ml distilled water at first 24 hours at 37°C, and then specimens were divided into fluoride group which was immersed in 25 ml of 1.23 % APF gel and control group which was stored 25 ml distilled water for 24 hours at 37°C. The Micromet II Microhardness Tester, Buehler, IL, USA that was standardised for Vickers hardness test was used to test the specimens at 100-gram load. Data were analysed using the t-test comparison test. Results: The level of microhardness of the fluoride group (14.34) was much lower compared to the control group (43.21) with a highly significant difference (p<0.01). Conclusion: The application of 1.23% APF gel on high viscosity GIC reduces the microhardness level compared to the control group.

Dental alginate impression waste as additional fertiliser for plant yields and soil quality Frahdian, Tommy; Hasratiningsih, Zulia; Karlina, Elin; Herdiyantoro, Diyan; Takarini, Veni
Padjadjaran Journal of Dentistry Vol 30, No 1 (2018): March 2018
Publisher : Faculty of Dentistry Universitas Padjadjaran

Introduction: Dental alginate impression material is the most common material used in dentistry. However, dental alginate waste (DAW) is one of the causes of the increasing number of dentistry and medicinal wastes. This research was aimed to discover the effect of dental alginate impression waste as additional fertiliser on the plant yields by determining the weight of cauliflower crop, and towards the quality of soil by determining the soil pH (Ultisol® Jatinangor). Methods: The experiment was using a randomised block design with 4 treatments and 7 times replications. The treatment consisted of A0 (0% DAW as control), A1 (0.01% DAW), A2 (0.1% DAW), and A3 (1% DAW). Results: The weight of cauliflower after addition of DAW in group A0 was 72.78; A1 was 139.82); A2 was 130.69; and A3 was 60.72). While the pH soil in group A0 was 5.92; A1 was 6.07; A2 was 6.02; and A3 was 6.26. The treatment in the A1 and A2 groups were found as the significant doses that able to increase the cauliflower weight for consecutively 1.92 times and 1.80 times compared to the control group, while on the soil quality improvement (soil pH), the addition of DAW was not significantly affected. Conclusion: It can be concluded that the addition of dental alginate waste at the dose of 0.01% and 0.1% increased the weight of cauliflower, but has no significant effect on the soil quality.

Analysis of the linear dimensions of the high stability alginate cast models with casting delays Yusuf, Muhammad Erlangga Maulana; Karlina, Elin; Hasratiningsih, Zulia
Padjadjaran Journal of Dentistry Vol 26, No 2 (2014): July 2014
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol26no2.26800

Introduction: Dimensional stability of alginate impression is important to obtain an accurate cast. This study was to find the linear dimensional changes of the cast made from delayed pour high stability alginate impression after 5 days. Methods: This experimental laboratory study used 20 samples, divided into 4 groups. First and third group were the generated cast produced by immediately pour into high stability and conventional alginate impressions. Second and fourth group were the generated cast produced by delayed pour into high stability and conventional alginate impression for 5 days in storage with 100% humidity. Dimensional changes were measured on the upper part of the cast from buccal-lingual and mesial-distal direction beside measuring on the outer distance between the upper cast used Mitutoyo digital caliper scaled 0.01 mm. The data were analyzed using ANOVA (α = 0.05).Results: Mesial-distal (a) diameter average of group I, II, IV were respectively 8.410 mm, 8.520 mm, and 8.620 mm, compared with III as control was 8.420 mm. Meanwhile, diameter averages of mesial-distal (b) were 8.314 mm, 8.416 mm, 8.513 mm, and 8.315 mm. The averages of distance between each teeth (c) were 13.312 mm, 13.240 mm 13.191 mm, and 13.316 mm. The diameter averages of buccal-lingual (d) were 8.411 mm, 8.530 mm, 8.608 mm and 8.410 mm. The diameter averages of buccal-lingual (e) were 8.350 mm, 8.441 mm, 8.524 mm, and 8.340 mm. ANOVA test of the results of distance measurements between teeth (c) produces a calculated F value of 147.850, higher than the F table value (3.239). There were significant diferencess dimensional changes on gypsum cast made from high stability alginate impression and then poured after 5 days. Conclusion: There were diferencess linier dimensional changes on gypsum cast made from high stability alginate impression and then poured after 5 days.

Co-Authors agustina dewi Anan Sutisna Andiesta, Niekla Survia Azzahra, Fauziah Cahyanto, Arief Cahyo, Al-Qomari Cahyo, Alqomari Deden Ibnu Aqil, Deden Ibnu DIYAN HERDIYANTORO Eddy, Diana Rakhmawati Fadli Rasam Frahdian, Tommy Frahdian, Tommy Idznihaq, Khairina Interdiana Candra Sari, Ani Izzudin, Mohammad Azrul Josua, Dian Pertiwi Kosterman Usri, Kosterman Muchlas Suseno Muhamad Yasir Nabillah Salma, Dinda Jihan Nadia Greviana, Nadia Nina Djustiana Nuridayanti, Nuridayanti Prameshwari, Fadilla Rizky Putra, Adria Permana Putra, Adria Permana RAMADHAN, MUHAMMAD FARHAN Ratna Indriyanti, Ratna Renny Febrida Sanjaya, Arya Sari, Ani Interdiana Candra Siregar, Jenny Sista Solihudin, Solihudin Suhartini, Nyai Veni Takarini Viona, Nona Wulanhapsari, Madeiva Yanwar Faza Yusuf, Muhammad Erlangga Maulana Zulia Hasratiningsih, Zulia

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