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"Latar Belakang: Semen hidraulik C2SCS merupakan salah satu bahan bioaktif yang disintesis dari bahan alami, yaitu cangkang telur dan sekam padi. Tujuan: Mengetahui efek semen C2SCS dari cangkang telur dan sekam padi terhadap peningkatan derajat kristalinitas hidroksiapatit dentin. Metode: 24 sampel gigi dibuat kavitas buatan dan dibagi menjadi 4 kelompok. Kelompok 1 (dentin normal) sebagai kontrol, kelompok 2 dentin demineralisasi, kelompok 3 dentin demineralisasi diaplikasi semen C2SCS dengan rasio pencampuran 1:1, kelompok 4 dentin demineralisasi diaplikasi semen C2SCS rasio 1:2. Seluruh sampel disimpan dalam shaking incubator pada suhu 37° C selama 14 hari. Kemudian sampel gigi tersebut diperiksa dengan XRD dan SEM untuk melihat peningkatan jumlah kristal hidroksiapatit dentin. Hasil: Terdapat peningkatan derajat kristalinitas hidroksiapatit dentin setelah aplikasi semen C2SCS rasio 1:1 yang nilainya berbeda bermakna dengan dentin demineralisasi, dan tidak berbeda bermakna dengan dentin sehat (kontrol positif). Semen C2SCS rasio 1:1 lebih berpotensi untuk meningkatkan pembentukan kristal hidroksiapatit pada dentin demineralisasi dibanding rasio 1:2 Kesimpulan: Semen C2SCS dari cangkang telur dan sekam padi memiliki potensi untuk meremineralisasi dentin. Semen C2SCS rasio 1:1 memiliki potensi remineralisasi dentin yang lebih tinggi dibanding kelompok lainnya.

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Background: C2SCS cement is one of bioactive material synthesized from natural material, such as eggshell calcium and rice husk silica. Objective: To determine the effect of C2SCS cement made from eggshell and rice husk silica to the increase of degree of cristallinity of dentin hydroxyapatite. Methods: Artificial cavity was made in 24 tooth sample, which then divided into 4 groups. Group 1 is normal dentin as the positive control group. Group 2 is demineralized dentin. Group 3 is demineralized dentin applied with C2SCS cement in mixing ratio of 1:1. Group 4 is demineralized dentin applied with C2SCS cement in mixing ratio of 1:2. All samples are stored inside a shaking incubator at a temperature of 37 C. An examination using XRD was done to all samples to see the degree of cristallinity of dentin hydroxyapatite, and a SEM image is taken to see morphology and microstructure of hydroxyapatite. Result: There is a significant increase of degree of cristallinity of dentin hydroxyapatite after C2SCS cement application with 1:1 ratio compared to demineralized dentin, and insignificant difference with normal dentin. C2SCS cement in 1:1 ratio has more potential to increase the formation of hydroxyapatite crystal compared to 1:2 ratio. Conclusion: C2SCS cement made from eggshell and rice husk silica has the potential to remineralize dentin. C2SCS cement in 1:1 ratio has more remineralization potential compared to other groups."

"Latar Belakang: Pemanfaatan material limbah hayati cangkang telur sebagai sumber kalsium dan abu sekam padi sebagai sumber silika dapat digunakan sebagai substitusi komponen utama pada proses pembentukan semen Dikalsium Silikat. Tujuan: Mengetahui efek proses dan rasio cangkang telur dan silika sekam padi terhadap jumlah prosentase kandungan dikalsium silikat. Metode: Sebanyak 1 g bubuk cangkang telur hasil milling kering menggunakan alat High Energy Milling dan 1 g silika sekam padi dilakukan uji karakterisasi XRD Sintesis dikalsium silikat dilakukan dengan metode solid state menggunakan empat rasio mol campuran cangkang telur dan silika sekam padi (9,01:3,00) ; (2:1) ; (1,9:1) dan (1,8:1) yang di dapat dari hasil percobaan pendahuluan. Campuran homogen dari masing-masing sampel dilakukan dengan milling basah menggunakan alat High Energy Milling selama 1 jam (700 rpm) dan larutan pencampur HexanTM. Sintesis Dikalsium silikat menggunakan kalsinasi suhu 12000C selama 3 jam pada Muffle Furnace dan proses pendinginan dibiarkan hingga mencapai suhu ruangan tanpa perlakuan khusus tertentu. Semen dikalsium silikat yang terbentuk selanjut dilakukan uji karakterisasi dengan XRD. Data hasil penelitian di sajikan dalam bentuk deskriptif. Hasil: Proses milling basah dengan rasio cangkang telur dan silika sekam padi 1,8 : 1 menghasilkan prosentase konten C2S ( 100% ) dengan 2 struktur kristalite (monoclinic dan orthorombic). Rasio 1,9:1 menghasilkan 96,22% C2S rasio 2:1 menghasilkan 94,54% C2S dan rasio 9,01: 3,00 menghasikan 71,6% C2S. Kesimpulan: Proses milling basah dengan rasio cangkang telur dan silika sekam padi 1,8 : 1 pada suhu kalsinasi 12000C selama 3 jam,menghasilkan prosentase kandungan tertinggi ( 100% ) C2S pada semen hidraulik campuran cangkang telur dan silika sekam padi.

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Background: Silica rice husk and eggshell waste are one of the calcium source that can be used as main component substitute in formation process of Dicalcium Silicate.

Objective: To Determine the effect of silica rice husk and eggshell mixture process and ratio to the percentage formation of dicalcium silicate hydraulic cement.

Methods: 1 gram of eggshell powder produced by dry milling using the High Energy Milling machine and 1 gram of silica rice husk were characterized tested with XRD (X-Ray Diffraction) Dicalcium silicate synthesis was made with solid state method using four mol ratio of the eggshell and silica rice husk mixture, which were (9,01:3,00) ; (2:1) ; (1,9:1) and (1,8:1) from the previous research. Homogenous mixture from each sample were proceed from the wet milling using High Energy Milling for 1 hour (700rpm) and HexanTM solution mixture. Dicalcium silicate synthesis using calcination temperature 12000C for 3 hours on Muffle Furnace and the cooling process were letting to the room temperature without any further treatment. Dicalcium silicate cement were formed using the characteristic test with XRD. The result was perform in descriptive.

Result: Wet milling process with ratio of eggshell and silica rise husk was 1,8 : 1 content percentage of C2S ( 100% ) with 2 crystallite structure (monoclinic and orthorhombic). Ratio 1,9 : 1 produce 96,22% of C2S, ratio 2:1 produce 94,54% of C2S dan ratio 9,01: 3,00 produce 71,6% of C2S.

Conclusion: Wet milling with ratio of eggshell and silica rise husk was (1,8:1), calcination temperature 12000C for 3 hours produce the highest percentage (100%) of C2S on hydraulic cement from eggshell and silica rise husk mixture."

"ABSTRAK Latar Belakang: Berbagai material kaping pulpa berbahan dasar kalsium silikatterus dikembangkan, diantaranya semen berbasis kalsium silikat denganpenambahan steroid. Tujuan: Menganalisis efek penambahan steroid pada semenberbasis kalsium silikat terhadap viabilitas sel fibroblas. Metode: Sel fibroblasembrio ayam direndam dalam ekstrak larutan semen berbasis kalsium silikatdengan penambahan steroid dan MTA. Viabilitas sel dihitung dengan menggunakan uji MTT. Hasil: Terdapat perbedaan bermakna (p ≤ 0,05)viabilitas sel pada kelompok semen berbasis kalsium silikat dengan penambahansteroid dibandingkan kelompok kontrol dan MTA. Kesimpulan: Penambahansteroid menurunkan viabilitas sel. Terdapat peningkatan pada 72 jam, yang menandakan terjadinya proliferasi sel.ABSTRACT Background: Calcium silicate based materials are being developed continuously,one of them is calcium silicate based cement containing steroid. Objective: Toanalyze the effect of steroid addition in calcium silicate based cement onfibroblast cells viability. Methods: Chicken embryonic fibroblast cells wereimmersed in extract solution of calcium silicate based cement containing steroidand MTA. Viability was analyzed by MTT Assay. Results: Significant difference (p ≤ 0,05) of viability on calcium silicate based cement containing steroid groupwas found, compared to control and MTA group. Conclusion: Steroid additiondecrease viability. There was an increase in 72 hours, marking cells proliferation.;Background: Calcium silicate based materials are being developed continuously,one of them is calcium silicate based cement containing steroid. Objective: Toanalyze the effect of steroid addition in calcium silicate based cement onfibroblast cells viability. Methods: Chicken embryonic fibroblast cells wereimmersed in extract solution of calcium silicate based cement containing steroidand MTA. Viability was analyzed by MTT Assay. Results: Significant difference (p ≤ 0,05) of viability on calcium silicate based cement containing steroid groupwas found, compared to control and MTA group. Conclusion: Steroid additiondecrease viability. There was an increase in 72 hours, marking cells proliferation.;Background: Calcium silicate based materials are being developed continuously,one of them is calcium silicate based cement containing steroid. Objective: Toanalyze the effect of steroid addition in calcium silicate based cement onfibroblast cells viability. Methods: Chicken embryonic fibroblast cells wereimmersed in extract solution of calcium silicate based cement containing steroidand MTA. Viability was analyzed by MTT Assay. Results: Significant difference (p ≤ 0,05) of viability on calcium silicate based cement containing steroid groupwas found, compared to control and MTA group. Conclusion: Steroid additiondecrease viability. There was an increase in 72 hours, marking cells proliferation."

"Sifat mekanis pasta semen yang terdiri dari kuat tekan, kuat tarik, porositas dan modulus elastisitas merupakan sifat utama yang sangat penting dalam pengunaan sebagai bahan konstruksi. Seiring dengan perkembangan, penambahan bahan additif untuk mendapatkan sifat mekanis beton pada saat ini begitu banyak variasinya, salah satunya adalah dengan penambahan kadar silica yang terkandung dalam abu sekam padi. Abu sekam padi yang diperoleh dari pembakaran kulit padi pada tungku bersuhu 400 - 800 0 C digunakan sebagai bahan pozolan karena memenuhi syarat SK-SNI-1989-F, yaitu mengandung SiO2 yang tinggi sebesar 93,44%. Dari hasil pengujian, untuk pasta semen campuran dengan penambahan abu sekam padi maka didapat kuat tekan pasta semen campuran abu sekam padi tertinggi berada di FAS 0,7 yaitu pada nilai kuat tekan f c? = 26,5 Mpa atau penurunan sebesar 71,86 % dari kuat tekan pasta normal dan kuat tarik pasta semen campuran abu sekam padi tertinggi berada di FAS 0,7 yaitu pada nilai kuat tarik f ct = 0,653 Mpa atau penurunan sebesar 37,57 % dari kuat tarik pasta normal. Penelitian ini dilakukan dengan kuat tekan dan kuat tarik pada pasta semen campuran abu sekam dengan FAS 0.60, 0.70 dan 0.80.

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Primary property of cement pasta consist of stress, strain, porosity and modulus of elasticity which is importants in construction material, as its development in property, additive mixture is added to change the property, until this day, one of its variation is by adding silica which existed in rice husk ash. Rice husk ash obtainable from the burning of rice coarse in furnace heated 400 ' 1000 0 C used as pozolan-like material as it fulfill the requirement within SK-SNI-1989-F, consisting of high SiO2 (93,44%). From the research test (mixing pasta cement with rish ash) we acquire a maximum stress strength within 0,7 water cement ratio that is f c? = 26,5 Mpa or a downgrade of 71,86 % from normal pasta stress strength and maximum strain strength within 0,7 water cement ratio that is f ct = 0,653 Mpa or a downgrade of 37,57 % from normal pasta strain strength. The reasearch was done by doing stressing and straining, using water cement factor 0,6, 0,7, and 0,8."

"Latar Belakang: Perawatan pulpa vital telah mengalami perubahan paradigma menuju perawatan regeneratif endodontik. Beberapa tahun terakhir material bioaktif terus berkembang dengan perubahan komposisi kimia untuk meningkatkan sifat fisik, kimia, dan biologisnya. Perkembangan material tersebut, seperti semen berbasis kalsium silikat, terus dikembangkan untuk merangsang regenerasi kompleks pulpa dentin sebagai tujuan akhir dari perawatan pulpa vital. Perubahan komposisi kimia berdampak pada perubahan semen ini dari sediaan powder/liquid menjadi pre-mixed putty. Salah satu penanda regenerasi kompleks pulpa dentin adalah analisis diferensiasi odontoblast human dental pulp stem cell (hDPSC) yang dapat diidentifikasi dengan peningkatan ekspresi Dentin Sialophospoprotein (DSPP) dan deposisi mineral hDSPC. Tujuan: Membandingkan efek perubahan komposisi kimia semen berbasis kalsium silikat pre-mixed putty terhadap diferensiasi odontogenik hDSPC. Metode: Semen berbasis kalsium silikat premixed putty dihaluskan dan disterilisasi (ISO 10993-5:2009). Sel punca pulpa (hDPSC) merupakan hasil kultur primer yang telah 80% confluent (telah melalui uji stem cell marker CD90 98%, CD105 99,7% , CD73 94% dan LinNeg 0,5%) dan mencapai P2-3 dilakukan serum starvation 24 jam. Kelompok penelitian ini terdiri dari 7 kelompok, hDSPC dikultur pada media osteogenik dengan penambahan; Biodentin® konsentrasi 1:1, 1:2, 1:5, BIO-C® Repair konsentrasi 1:1, 1:2, 1:5 dan kontrol negatif (DMEM + media osteogenik). Kemudian dilakukan uji ELISA diferensiasi hDSPC melalui ekspresi DSPP pada hari ke-7 dan 14 dan uji kualitatif pewarnaan Alizarin Red pada hari ke-21. Hasil: Semen berbasis kalsium silikat pre-mixed putty konsentrasi 1:5 pada waktu observasi 7 hari, dan konsentrasi 1:2 dan 1:5 pada waktu observasi 14 hari meningkatkan ekspresi DSPP dan deposisi mineral hDSPC. Kesimpulan: Perubahan komposisi kimia semen berbasis kalsium silikat pre-mixed putty meningkatkan ekspresi DSPP dan deposisi mineral hDPSC sehingga terbukti dapat menginduksi diferensiasi odontoblas.

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Background: Vital pulp treatment has undergone a paradigm shift towards endodontic regenerative treatment. In recent years, bioactive materials have continued to evolve with changes in chemical composition to improve their physical, chemical and biological properties. The development of these materials, such as cement-based calcium silicate, continues to be developed to stimulate the regeneration of the dentin pulp complex as the ultimate goal of vital pulp treatment. Changes in chemical composition have an impact on changing this cement from powder/liquid preparation to pre-mixed putty. One of the markers of regeneration of the dentin pulp complex is the analysis of odontoblast differentiation of human dental pulp stem cells (hDPSC) which can be identified by increased expression of Dentin Sialophospoprotein (DSPP) and mineral deposition of hDPSC. Objective: To compare the effect of changes in the chemical composition of cement based on calcium silicate pre-mixed putty on hDSPC’s odontogenic differentiation. Method: Cement based on premixed putty calcium silicate is pulverized and sterilized (ISO 10993-5:2009). Pulp stem cells (hDPSC) are the result of primary cultures that are 80% confluent (have gone through the stem cell marker test CD90 98%, CD105 99.7%, CD73 94% and LinNeg 0.5%) and reach P2-3 by serum starvation 24 hours. This research group consisted of 7 groups, hDSPC was cultured on osteogenic media with the addition of; Biodentin® concentrations of 1:1, 1:2, 1:5, BIO-C® Repair concentrations of 1:1, 1:2, 1:5 and negative control (DMEM + osteogenic media). Then an hDSPC differentiation ELISA test through DSPP expression was performed on days 7 and 14 and a qualitative test of Alizarin Red staining on day 21. Results: Cement based on pre-mixed putty calcium silicate with a concentration of 1:5 at 7 days of observation, and concentrations of 1:2 and 1:5 at 14 days of observation increased DSPP expression and mineral deposition of hDPSC. Conclusion: Changes in the chemical composition of pre-mixed putty calcium silicate-based cement increased the expression of DSPP and mineral deposition in hDPSC so that it was proven to be able to induce odontoblast differentiation."

"Latar Belakang: Temulawak (Curcuma xanthorrhiza Roxb.) adalah tanaman berkhasiat obat asli Indonesia dan merupakan tanaman obat unggulan untuk dikembangkan menjadi obat herbal terstandar. Pada beberapa penelitian, ekstrak etanol temulawak (EET) telah terbukti berkhasiat sebagai antimikroba, namun belum diketahui keamanannya terhadap jaringan mukosa mulut. Tujuan: Mengetahui sitotoksisitas ekstrak etanol temulawak (EET) terhadap sel fibroblas gingiva manusia (in vitro). Metoda: Model sel fibroblas gingiva diperoleh dari kultur primer jaringan gingiva manusia. Ekstrak etanol temulawak (1%, 2,5%, 5%, 10%, 20%, 40%) dipaparkan pada sel fibroblas gingiva dengan durasi paparan 1 jam, 3 jam, dan 24 jam. Viabilitas sel pasca paparan EET dianalisis dengan uji MTT (3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyl-tetrazolium bromide) dan sitotoksisitas ditetapkan berdasarkan Inhibition Concentration 50% (IC50). Sedangkan, jumlah sel pasca paparan EET dievaluasi dengan metoda exclusion dye/trypan blue. Hasil: Model sel fibroblas gingiva dapat diperoleh dari kultur primer jaringan gingiva dan secara morfologi teridentifikasi sebagai sel fibroblas. Berdasarkan nilai IC50, EET pada konsentrasi >20% pasca paparan 1 dan 3 jam dan konsentrasi ≥10% pasca paparan 24 jam sitotoksik terhadap sel fibroblas gingiva. Jumlah sel fibroblas gingiva menurun sesuai dengan peningkatan konsentrasi pada durasi paparan 24 jam. Kesimpulan: Ekstrak etanol temulawak memiliki efek sitotoksik terhadap sel fibroblas gingiva. Sitotoksisitas ekstrak etanol temulawak dipengaruhi oleh konsentrasi dan durasi paparan.

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Background: Javanese turmeric (Curcuma xanthorrhiza Roxb.) is a herbal plant native to Indonesia and is a superior herbal plant to be developed into a standardized herbal medicine. In some studies, Curcuma xanthorrhiza ethanolic extract (CXEE) had been reported to have antimicrobial effect. However, its safety has not been evaluated for oral mucosal tissue. Objective: To evaluate the cytotoxicity of Curcuma xanthorrhiza ethanolic extract to human primary gingival fibroblast cells (in vitro). Method: Gingival fibroblast cells model were cultured from human primary gingival tissues. CXEE (1%, 2,5%, 5%, 10%, 20%, 40%) was added into gingival fibroblast culture for 1 h, 3 hrs, and 24 hrs. Cells viability after treatment of EET was analized with the 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay and determined by Inhibition Concentration 50% (IC50). Meanwhile, cell density of treated cells was determined by exclusion dye/Trypan Blue. Result: Primary culture of human gingival tissue was able to produce gingival fibroblast cells model that was morphologically identified. Based on IC50, CXEE was cytotoxic againts gingival fibroblast cells at >20% of final concentration after 1 hr and 3 hrs treatment and at ≥10% of final concentration after 24 hrs treatment. Cell density of gingival fibroblast cells showed reduction as the increase of extract concentration in 24 hrs treatment. Conclusions: Curcuma xanthorrhiza ethanolic extract shows cytotoxic effect againts gingival fibroblast cells and is affected by concentration and duration of treatment."

"The synthesis of silica from rice husk ash has been studied. The purification has been done by adding acid solution and by heating. The sample heated in the temperature range of 700 - 1000°C. The characterization was done by means of the X- Ray diffraction, Electron microscope and X-ray Fluorescence. The results show the RHA after burning contain 59.72 % wt, after heating the weight fraction of silica increase, 700°C around 84.59%, 850°C around 85.75 % and 1000°C around 87.55 %. Electron microscope shows the evolution of microstructure on heating. From the evolution of impurity elemens in the RHA, it is concluded that the increased of silica contained is due to decrease of potassium contain in the RHA."

"Penelitian ini sendiri dilakukan dengan membakar sekam padi pada temperatur 700oC sampai berubah menjadi abu sekam padi. Selanjutnya, abu sekam padi diberikan perlakuan mekanokimia ayng bertujuan untuk mengurangi ukuran partikel. Proses mekanokimia menggabungkan proses mekanik dengan menggunakan planetary ball mill dan proses kimia dengan menambahkan asam klorida 1M. Pada penelitian ini proses mekanokimia dilakukan selama 15 menit dan 30 menit sebagai variasi. Langkah selanjutnya yaitu menambahkan abu sekam padi hasil proses mekanokimia tersebut ke dalam beton sebagai material pengganti semen. Beton dibuat menggunakan cetakan 10 cm x 10 cm dan uji tekan beton akan dilakukan setalah curing selama 28 hari. Beton dengan abu sekam padi hasil proses mekanokimia 30 menit mempunyai kekuatan tekan sebesar 15,15 MPa dan beton dengan abu sekam padi hasil proses mekanokimia 15 menit mempunyai kekuatan tekan sebesar 14,8 MPa.

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This research was carried out by burning the rice husk at 700oC until it turned into grayish white ash. After that, rice husk ash was given a mechano-chemical treatment to reduce the partikel size. Mechano-chemical process combines the mechanical process using planetary ball mill and chemical process by adding the hydrochloric acid 1M. In this research, mechano-chemical process was conducted for 15 minutes and 30 minutes as variation. Next step was used the rice husk ash from mechano-chemical process as cement replacement. Concrete was made on 10 cm x 10 cm mold and compressive test will was carried out after 28 days of curing process. The compressive strength of concrete with the addition of rice husk ash from mechano-chemical process is 15,15 MPa and the compressive strength of concrete with the addition of rice husk ash from mechano-chemical process is 14,8 MPa.

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