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All Journal Jurnal Kedokteran Gigi Universitas Padjadjaran B-Dent, Jurnal Kedokteran Gigi Universitas Baiturrahmah Menara Ilmu Padjadjaran Journal of Dental Researchers and Students MDJ (Makassar Dental Journal) Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks
Widya Puspita Sari
Fakultas Kedokteran Gigi Universitas Baiturrahmah Padang, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Dentistry Education Health Professions Immunology & microbiology Medicine & Pharmacology Public Health Social Sciences Other

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Journal : Padjadjaran Journal of Dental Researchers and Students

 1 
Pengaruh penambahan kombinasi zat aditif pada gipsum tipe III daur ulang terhadap kekuatan tekan dan waktu pengerasanThe effect of adding combination of additives to recycled type III gypsum on compressive strength and hardening time Satria Yandi; Widya Puspita Sari; Ihut Hamonangan
Padjadjaran Journal of Dental Researchers and Students Vol 5, No 1 (2021): April 2021
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v5i1.32255

Abstract

Pendahuluan: Limbah gipsum tipe III (dental stone) dapat menimbulkan masalah pencemaran lingkungan karena sulit diuraikan serta dapat bercampur dengan limbah makanan. Permasalahan tersebut diatasi dengan mendaur ulang gipsum dengan cara menambahkan kombinasi zat aditif untuk mempercepat waktu pengerasan dan menambah kekuatan tekan gipsum. Tujuan penelitian adalah menganalisis pengaruh penambahan kombinasi larutan seng sulfat dan kalium sulfat terhadap kekuatan tekan dan waktu pengerasan pada gipsum tipe III daur ulang. Metode: Desain penelitian adalah eksperimental laboratorium. Penelitian ini dilakukan pengambilan masing-masing 4 sampel pada 3 kelompok perlakuan penambahan kombinasi zat aditif. Penelitian dilakukan di Laboratorium Universitas Baiturrahmah dan Laboratorium Teknik Metalurgi Universitas Andalas. Hasil: Kelompok 1 penambahan K2SO4 1,5% + ZnSO4 4,5% hasil kekuatan tekan 4,68 MPa dan waktu pengerasan 96 jam. Kelompok 2 penambahan K2SO4 2% + ZnSO4 5% hasil kekuatan tekan 3,12 MPa dan waktu pengerasan 91 jam. Kelompok 3 penambahan K2SO4 2,5% + ZnSO4 5,5% hasil kekuatan tekan 1,56 MPa dan waktu pengerasan 88 jam. Simpulan: Terdapat pengaruh penambahan larutan kalium sulfat dan seng sulfat terhadap kekuatan tekan dan waktu pengerasan pada gipsum tipe III daur ulang. Semakin tinggi jumlah penambahan zat aditif K2SO4 dan ZnSO4 pada gipsum daur ulang didapatkan nilai kekuatan tekan semakin rendah dan waktu pengerasan semakin singkat.Kata kunci: Gipsum daur ulang, kombinasi zat aditif, kekuatan tekan, waktu pengerasan. ABSTRACT Introduction: Gypsum waste type III (dental stone) can cause environmental pollution problems due to its difficulty in decomposing and potential mixed with food waste. This problem is overcome by recycling the gypsum by adding additives to speed up the hardening time and increase the compressive strength of the gypsum. The research objective was to analyse the effect of adding a combination of zinc sulfate and potassium sulfate solutions on the compressive strength and hardening time of recycled type III gypsum. Methods: The research design was laboratory experimental. This research was carried out by taking four samples each in 3 treatment groups with a combination of additives. The research was conducted at the Baiturrahmah University Laboratory and the Andalas University Metallurgical Engineering Laboratory. Results: Group 1: the addition of K2SO4 1.5% + ZnSO4 4.5% results in compressive strength of 4.68 MPa and a hardening time of 96 hours. Group 2: the addition of 2% K2SO4 + 5% ZnSO4 resulted in compressive strength of 3.12 MPa and a hardening time of 91 hours. Group 3: the addition of 2.5% K2SO4 + 5.5% ZnSO4 resulted in compressive strength of 1.56 MPa and a hardening time of 88 hours. Conclusion: There is an effect of adding potassium sulfate and zinc sulfate solutions on the compressive strength and hardening time of recycled type III gypsum. The higher the amount of K2SO4 and ZnSO4 additives added to recycled gypsum, the lower the compressive strength value and the shorter the hardening time.Keywords: Recycled gypsum, combination of additives, compressive strength, hardening time.
Perbedaan antara perlekatan Candida albicans pada glass fiber non dental dan e-glass fiber dental reinforced polymer setelah perendaman dalam NaOCl 0,5%The difference between the adhesion of Candida albicans on glass fiber non-dental and e-glass fiber dental reinforced polymer after immersion in 0.5% NaOCl Widya Puspita Sari; Leny Sang Surya; Chitra Annesha Pratiwi
Padjadjaran Journal of Dental Researchers and Students Vol 5, No 1 (2021): April 2021
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v5i1.30886

Abstract

Pendahuluan: Porositas merupakan salah satu sifat fisik yang dapat membuat resin akrilik rentan terhadap perlekatan debris dan mikroorganisme seperti Candida albicans. Permasalahan tersebut dapat diatasi dengan penambahan fiber. Resin akrilik yang ditambahkan fiber mempunyai sifat fisis yang lebih baik dibandingkan dengan resin tanpa penambahan fiber. E-glass fiber sering digunakan dalam bidang kedokteran gigi, namun di Indonesia harganya relatif mahal dan sulit diperoleh sehingga perlu pemesanan yang cukup lama. Alternatif seperti Glass fiber non dental banyak tersedia dengan harga yang terjangkau. Tujuan penelitian adalah menganalisis perbedaan perlekatan Candida albicans pada fiber reinforced polymer antara glass fiber non dental dan e-glass fiber dental setelah perendaman NaOCl 0,5%. Metode: Jenis penelitian yang digunakan adalah penelitian kuantitatif dengan metode eksperimental laboratorium menggunakan rancangan posttest control group design. Jumlah total sampel adalah 12 buah, dibagi menjadi 3 kelompok yaitu kelompok kontrol (polymer tanpa penambahan fiber), kelompok perlakuan 1 (glass fiber non dental reinforced polymer), dan kelompok perlakuan 2 (e-glass fiber dental reinforced polymer). Analisis statistik menggunakan uji Kruskal-Wallis, selanjutnya untuk mengetahui kelompok mana yang terdapat perbedaan maka selanjutnya dilakukan uji lanjutan (post-hoc) menggunakan uji Mann-Whitney untuk mengetahui adanya perbedaan pada tiap kelompok. Hasil: Perlekatan Candida albicans pada kelompok kontrol (0,68%), glass fiber non dental (0,56%), dan e-glass fiber dental (0,43%). Hasil uji statistik nilai p= 0,007<0,05. Hasil uji Post hoc 0,021. Simpulan: Terdapat perbedaan perlekatan Candida albicans antara glass fiber non dental dan e-glass fiber dental reinforced polymer setelah perendaman dalam larutan sodium hipoklorit (NaOCl) 0,5 %.Kata kunci: Candida albicans, glass fiber non dental, e-glass fiber dental reinforced polymer, natrium hipoklorit 0,5%. ABSTRACTIntroduction: Porosity is one of the mechanical properties that makes acrylic resin susceptible to the attachment of debris and microorganisms such as Candida albicans. The addition of fiber can overcome this problem. The addition of fiber will leads to acrylic resin with better physical properties than without the addition. E-glass fiber is often used in dentistry. However, in Indonesia, the price is relatively high and difficult to obtain, requiring quite a long order. Alternatives such as non-dental glass fiber are widely available at affordable prices. This study was aimed to analyse the difference in the adhesion of Candida albicans on glass fiber non-dental and e-glass fiber dental reinforced polymer after immersion in 0.5% NaOCl. Methods: The type of research was quantitative research with experimental laboratory methods using a posttest control group design. The total number of samples was 12, divided into three groups: the control group (polymer without fiber addition), treatment group 1 (glass fiber non-dental reinforced polymer), and treatment group 2 (e-glass fiber dental reinforced polymer). Statistical analysis used was the Kruskal-Wallis test. Then, to determine which groups had differences, an advance test (post-hoc) was carried out using the Mann-Whitney test to determine the differences in each group. Results: Adhesion of Candida albicans in the control group (0.68%), non-dental glass fiber (0.56%), and dental e-glass fiber (0.43%). The result of the statistical test resulted in p-value=0.007; p<0.05. The result of the post-hoc test was 0.021. Conclusion: There is a difference in the adhesion of Candida albicans between non-dental glass fiber and dental e-glass fiber dental re-inforced polymer after immersion in 0.5% sodium hypochlorite (NaOCl) solution.Keywords: Candida albicans, glass fiber non dental, e-glass fiber dental reinforced polymer, 0.5% sodium hypochlorite.
Pengaruh posisi e-glass fiber non dental terhadap kekerasan glass fiber reinforced composite pada gigi tiruan cekat: studi eksperimental Muhammad Firman Al Isra; Widya Puspita Sari; Darmawangsa Darmawangsa
Padjadjaran Journal of Dental Researchers and Students Vol 7, No 3 (2023): Oktober 2023
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v7i3.49730

Abstract

ABSTRAKPendahuluan Gigi tiruan menjadi solusi yang tepat untuk menggantikan gigi yang hilang. Gigi tiruan jembatan dengan bahan porcelain fused to metal paling sering digunakan dalam praktik klinis, namun memiliki kekurangan seperti efek alergenik dan efek toksisitas yang dapat disebabkan oleh bahan logam, rentan pecah, memerlukan beberapa kali kunjungan, dan membutuhkan preparasi gigi abutment yang cukup luas. Alternatif bahan yang dapat digunakan untuk gigi tiruan cekat adalah Fiber reinforced composite dengan E-glass fiber dental yang memiliki kelebihan seperti biokompatibilitas baik, memiliki kekuatan kompresi dan estetika yang baik. Ketersediaan E-glass fiber dental di Indonesia masih terbatas dengan harga yang cukup mahal. E-glass fiber non dental secara umum telah digunakan di bidang teknik. E-glass fiber non dental memiliki komposisi yang sedikit berbeda dengan E-glass fiber dental. Tujuan dari penelitian ini untuk mengetahui pengaruh posisi E-glass fiber non dental terhadap kekerasan Fiber reinforced composite. Metode: Penelitian eksperimental dengan Fiber reinforced composite dengan E-glass fiber non dental dengan 3 kelompok sampel yang teridiri dari kelompok posisi tension side, kelompok compression side, dan kelompok neutral axis yang masing masing terdiri dari 6 sampel. Sampel diuji dengan vickers hardness tester dengan beban 100gf selama 15detik, jejak indentasi dihitung untuk mendapatkan vickers hardness number (VHN). Hasil: Hasil uji pada Fiber reinforced composite dengan fiber pada posisi tension side memiliki kekerasan tertinggi dengan nilai 45,77 VHN. Fiber reinforced composite dengan fiber pada neutral axis 43,35 VHN. Fiber reinforced composite dengan fiber pada compression side memiliki nilai terendah 39,60 VHN. Simpulan: Kesimpulan dari penelitian ini bahwa terdapat pengaruh posisi E-Glass fiber non dental terhadap kekerasan Fiber reinforced composite.KATA KUNCI: E-glass fiber, Fiber reinforced composite, posisi fiber, kekerasanThe Effect of Non-dental E-glass Fiber Position on the Hardness of Glass Fiber Reinforced Composite in Fixed DenturesABSTRACT Introduction: Dentures are the right solution to replace missing teeth. Denture bridges made from porcelain fused to metal are the most frequently used in clinical practice, but they have disadvantages such as allergenic and toxicity effects that can be caused by metal materials, are prone to breaking, require several visits, and require extensive preparation of the abutment teeth. Alternative materials that can be used for fixed dentures are fiber-reinforced composites with E-glass dental fiber, which have advantages such as good biocompatibility, compression strength, and aesthetics. The availability of E-glass fiber dental in Indonesia is still limited, with prices being quite expensive. Non-dental E-glass fiber has generally been used in the engineering field. Non-dental E-glass fiber has a slightly different composition from dental E-glass fiber. The aim of this research is to determine the effect of the position of non-dental E-glass fiber on the hardness of fiber-reinforced composites. Method: Experimental research with fiber-reinforced composite with non-dental E-glass fiber with 3 sample groups consisting of the tension side position group, compression side group, and neutral axis group, each consisting of 6 samples. The sample was tested with a Vickers hardness tester with a load of 100 gf for 15 seconds, and the indentation trace was calculated to obtain the Vickers hardness number (VHN). Results: The test results on fiber-reinforced composites with fiber in the tension-side position had the highest hardness with a value of 45.77 VHN. Fiber composite reinforced with fiber on the neutral axis is 43.35 VHN. Fiber-reinforced composites with fiber on the compression side have the lowest value of 39.60 VHN. Conclusion: The conclusion from this research is that there is an influence of the position of non-dental E-Glass fiber on the hardness of fiber-reinforced composites.KEY WORDS: E-glass fiber, Fiber reinforced composite, fiber position, hardness 
Co-Authors Adiva Afnela Putri Adiva Afnela Putri Adriansyah Adriansyah Chairunnisa, Fita Chitra Annesha Pratiwi Darmawangsa, Darmawangsa Deby Anzules Dedi Sumantri Dewi Elianora Fadriyanti, Okmes Febriani Leni Purnamasari Fildzah Nurul Fajrin, Fildzah Nurul Firdaus Firdaus Friliyan Ladiora Haria Fitri Hayati, Maulida Ihut Hamonangan Intan Batura Endo Mahata Intan Mardhiyah Jaelani Kurnia Putri Laveniaseda Laveniaseda Leny Sang Surya Leny Sang Surya Mitha ari cahaya putri Muhammad Firman Al Isra Nila Kasuma Resti Iswani Resti Iswani Sania Fauziah Sugeng Andi Purnama Yandi, Satria