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"Latar Belakang: Siler yang baik adalah yang memiliki tingkat kebocoran mikro yang rendah Penelitian ini bertujuan untuk menganalisis siler golongan resin SRE dan polidimetilsiloksan generasi baru SPGB Metode: Tiga puluh dua gigi premolar bawah dibagi dua kelompok sama besar yaitu kelompok SRE dan SPGB Setelah pengisian saluran akar dengan teknik kondensasi lateral sampel diinkubasi 370C 24 jam mahkota dipotong menyisakan bagian akar 15 mm dilapis cat kuku kecuali 1 mm dari apeks lalu direndam dalam tinta India selama 7 X 24 jam Lalu sampel didekalsifikasi dengan asam nitrat 5 didehidrasi berturut turut dengan alkohol 80 90 dan 100 dan dibuat transparan dengan metil salisilat 100 Kedalaman penetrasi tinta dievaluasi dengan mikroskop stereo Skor 1 untuk penetrasi tinta 0 0 5 mm skor 2 untuk penetrasi tinta 0 51 1 mm dan skor 3 untuk penetrasi tinta 1 mm Hasil: Distribusi proporsi kebocoran terbesar kelompok SRE terdapat pada skor 2 yaitu sebesar 56 3 Sedangkan distribusi proporsi kebocoran terbesar kelompok SPGB terdapat pada skor 1 yaitu sebesar 68 8 Dengan tes Kolmogorov Smirnov terdapat perbedaan bermakna antara kelompok SRE dan SPGB Kesimpulan: Kebocoran mikro pengisiansaluran akar pada sepertiga apeks dengan siler polidimetilsiloksan generasi baru lebih rendah dibandingkan dengan siler resin epoksi

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Background: An ideal root canal sealer should have good sealing ability The purpose of this study was to analyze the microleakage of obturation using epoxy resin based SRE and new generation polydimethylsiloxane based SPGB as root canal sealer

Methods: Thirty two mandibular first premolars were equally divided into two groups and obturated with lateral condensation technique The sealer used for Group I and Group II were SRE and SPGB respectively After obturation the specimens were incubated 370C 24 h decoronated sealed with nail polish except 1mm from apex immersed in Indian ink for 7 days decalcified with 5 nitric acid solution dehydrated with 80 90 and 100 alcohol consecutively and made transparent by immersing them in 100 methyl salicylate Dye penetration were evaluated under stereomicroscope and givenscore 1 3 Specimen with 0 0 5 mm dye penetration was given score 1 while 0 51 1 mm penetration was given score 2 and 1 mm was given score 3 The results were statistically analyzed with Kolmogorov Smirnov test

Results: The largest proportion distribution in SR group was score 2 56 3 whilst the largest proportion distribution in SPGB group was score 1 68 8 There was a significant difference between the microleakage of epoxy resin based and new generation polydimethylsiloxane based sealer observed from the one third apical leakage

Conclusion: The microleakage of new generation polydimethylsiloxanebasedsealer is lower than epoxy resin based sealer"

"ABSTRAKLatar belakang: Salah satu sifat ideal suatu siler saluran akar adalah memiliki kemampuan penutupan yang baik terutama pada sepertiga apeks. Tujuan: Untuk mengevaluasi perbandingan kebocoran antara pengisian saluran akar dengan siler polidimetilsiloksan SP dan siler bioceramic SB . Metode: Tiga puluh enam gigi premolar rahang bawah, dibagi dua kelompok dan diisi dengan teknik kon tunggal menggunakan siler polidimetilsiloksan pada kelompok pertama, dan siler bioceramic pada kelompok ke-dua. Selanjutnya gigi diinkubasi 37?C, selama 24 jam , kemudian dilapisi dengan dua lapis cat kuku kecuali pada 2 mm dari apeks, dan direndam dalam tinta india 7 X 24 jam . Sampel didekalsifikasi, didehidrasi dan dibuat transparan sesuai dengan metode Robertson. Kedalaman penetrasi zat tinta dievaluasi dengan mikroskop stereo. Skor 0 untuk tidak bocor, skor 1 untuk penetrasi zat tinta le; 0,5 mm, skor 2 untuk penetrasi 0,51 ndash; 1 mm, dan skor 3 untuk penetrasi > 1 mm. Hasil: Distribusi proporsi kebocoran terbesar pada kelompok SP terdapat pada skor 2 44.4 , sedangkan pada kelompok SB terdapat pada skor 1 55.6 . Kesimpulan: Tingkat kebocoran pengisian saluran akar dengan siler bioceramic tidak berbeda dengan siler polidimetilsiloksan.

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ABSTRACTBackground One of the ideal properties of a root canal sealer is to have a good sealing ability, especially at the apical third of the root. Objective To evaluate the comparison of the apical leakage between obturation using bioceramic sealer SB and polydimethylsiloxane sealer SP . Methods Thirty six mandibular premolars were equally divided into two groups and was obturated with single cone technique. The sealer used for Group I and Group II were SP and SB respectively. After obturation, the samples were incubated 37 C, 24 h , sealed with two coats of nail polish except for 2 mm from the apex, immersed in the Indian ink for 7 days, decalcified, dehydrated and made transparent according to Robertson technique. Dye penetration were evaluated under stereomicroscope. Samples with no dye penetration were given score 0, le 0,5 mm dye penetration were given score 1, 0,051 ndash 1 mm were given score 2, and 1 mm were given score 3. Result The largest proportion distribution in SP group was at the score 2 44.4 , and in group SB was at the score 1 55.6 . Conclusion Bioceramic sealer showed similar apical leakage to polydimethylsiloxane sealer."

"ABSTRAKDalam pengembangan teknologi di dunia medis, pemantauan kesehatan secara konstan danberkesinambungan yang dilakukan secara realtime merupakan salah satu parameter utamatercapainya keberhasilan dalam proses penyembuhan pasien.Namun hingga saat ini masihterdapat berbagai kendala seperti degradasi kualitastransfer pembacaan sinyal elektrik olehelektroda konduktif hingga yang bersifat biologis seperti iritasi pada kulit jika dilakukanpemantauan jangka panjang. Salah satu solusi untuk mengatasi hal tersebut ialah denganmelakukan substitusi terhadap material bioelektroda Ag/AgCl yang telah digunakan secarakonvensional dengan bioelektrodacampuran Polydimethylsiloxane (PDMS) dan CarbonNanotube (CNT) yang memiliki tingkat fleksibilitas mekanik maupun parameterbiodegradabilitas yanglebih baik. Pada penelitian ini telah dilakukan proses fabrikasikomposit PDMS dengan material filler penguat berupa Carbon Nanotube Berdinding Tunggal(SWCNT) dengan perbedaan variabel konsentrasi sebesar 3%, 5%, dan 7%. Didapatkanbahwa saat dilakukan proses karakterisasi mekanik modulus elastisitas (E) dari kompositdengan prosedur uji tarik mikro, besarnya peningkatan konsentrasi CNT berpengaruh padanilai modulus, dengan rincian pada spesimen awal ialah sebesar 1,794 MPa dan mengalamipeningkatan signifikan menjadi 3,149 MPa lalu tingkat kenaikannya melemah menjadi 3,27MPa. Pemodelan analitik mikromekanik juga telah dilakukan mencakup pemodelan aturanpencampuran Voigt dan Reuss, hingga pemodelan Halpin-Tsai yang lebih kompleks

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ABSTRACTThe development in the medical technology area, a constant and continous health monitoringperformed in real time is one of the main parameters to achieve success in the healing processof the patient. But until now there are still many obstacles such as the degradation of thequality of the reading transfer using electrical signals by conductive electrodes to thebiological problem such as irritation to the skin if done on long-term monitoring. Onesolution to overcome this problem is to conduct the substitution of the bioelectrode materialof Ag / AgCl which has been used conventionally with a novel bioelectrode, a mixture ofPolydimethylsiloxane (PDMS) and Carbon Nano Tube (CNT) which has a better qualityinmechanical flexibility and biodegradability parameters. This study has been conducted withfabrication PDMS composite and its reinforcing filler material in the form of Single-WalledCarbon Nano Tube (SWCNT) with the difference of concentrations variable consist 3%, 5%and 7%. We report that when the process is carried out the mechanical characterization of themodulus of elasticity (E) of the composite with micro tensile test procedure, the amount ofincrease in the concentration of CNTs cause an effect on the value of modulus, with detailson the first specimen is at 1.794 MPa and increased significantly to 3,149 MPa, then the ratesof increase weakened to 3.27 MPa. Analytic modeling micromechanical modeling has alsobeen covered include Voigt and Reuss model which known as aRules of Mixture, and morecomplex model such as Halpin-Tsai model"

"Teknik timbul panas berbiaya rendah untuk ilmu mikro dan nanoteknologi merupakan teknik menjajikan di bidang litografi konvensional yang menghasilkan replikasi pola atau motif yang berkualitas tinggi. Di studi ini, teknik tersebut diaplikasikan dengan polimer yang dipilih secara selektif dan terdiri dari cetakan (yang berfungsi sebagai stempel) dengan pola mikropilar 5 x 5µm dan material acuan (yang bertindak sebagai substrat penerima pola dari stempel). Polimer yang digunakan adalah polystyrene (PS) dan polydimethylsiloxane (PDMS). Studi ini sebagian besar ditujukan untuk mengeksplorasi dan menilai batas resolusi dari replikasi pola akhir menggunakan mesin timbul panas konvensional (WT90-DS) yang sesuai dengan kebutuhan laboratorium berbasis universitas. Proses timbul panas memiliki tiga parameter kunci: temperatur, waktu, dan tekanan. Proses timbul panas ini memiliki beberapa tahapan: pemanasan, penahanan, pendinginan, istirahat, dan pelepasan cetakan. Studi ini menunjukkan hasil yang menjajikan dengan menganalisis tinggi dan lebar dari pola yang tercetak yang dibandingkan dengan cetakan referensi menggunakan profilometry. Hasil menunjukkan bahwa temperatur 120 °C dan tekanan 4kg menghasilkan replikasi terbaik dengan menampilkan keseragaman tinggi dan lebar dari pola jika dibandingkan dengan pola referensi.

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Low-cost hot embossing techniques for micro and nanotechnology studies is a promising conventional lithography technique that produces high-quality replications of patterns. In this study, the technique used prudent selections of polymers and consists of mould (which acts as a stamp) with a micropillar pattern of 5 x 5µm and moulding (which acts as the substrate that receives patterns from the stamp). The polymers used are polystyrene (PS) and polydimethylsiloxane (PDMS). This study is mainly aimed to explore and assess the resolution limit of the final pattern replication employing conventional hot embossers (WT90-DS) that match the necessities of a university-based lab. The embossing process requires three key parameters: temperature, time, and pressure. This hot embossing process experiences several stages: heating, holding, cooling, resting, and demoulding. The study demonstrates promising results by analysing the imprinted pattern’s height and width compared with the mould dimensions as a reference by utilising profilometry. The result shows that the temperature of 120 °C with a pressure of 4kg produces the best result by displaying uniform height and width of pattern compared to the reference."

"Latar Belakang: Pengisian dengan kon gutaperca berlapis resin (GBR) dan siler resin metakrilat menciptakansuatu sistem monoblok tersier. Tujuan: menganalisis perbandingan kerapatan antara pengisian GBR dan gutaperca konvensional (GK) dengan siler resin metakrilat di daerah sepertiga apeks.Metode:Tiga puluh dua gigi insisif bawah, dibagi dua kelompok sama besar, yaitu kelompok GBR dan GK dengan masing-masing kelompok menggunakan siler resin metakrilat. Setelah pengisian saluran akar dengan tekniksingle-cone, sampel diinkubasi (370C, 24 jam), kemudian dibelah dua secara vertikal. Dilakukan pemeriksaan kerapatan sepertiga apeks berdasarkan celah mikro yang ada pada daerah 5mm dari apeks menggunakan SEM dan diberi skor. Analisis data menggunakan uji Kolmogorov-Smirnov. Hasil: Skor 0 terbanyak pada GBR 43.8%,skor 1 terbanyak pada GK 81,3%% (165), skor 2 0% dan skor 3 terbanyak pada GBR 12.5%.Kesimpulan: Kerapatan hasil pengisian dengan kon gutaperca berlapis dibanding gutaperca konvensional dengan masing-masing kelompok menggunakan siler resin metakrilat pada sepertiga apeks tidak ada perbedaan bermakna walaupun secara subtansi jumlah celah mikro pada kelompok gutaperca berlapis lebih sedikit didaerah sepertiga apeks

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Background:Resin-coatedguttapercha as aroot canal obturation material is the system of tertiary monoblock. Purpose: to compare sealability of obturation using methacrylate resin-based root canal sealer between GBR dan GK group. Methods: Thirty two human lower insisive was used as specimen.All specimen was prepared using REVO-S and divided randomly into two groups. First group, GBK was obturated with resin-coated guttapercha andmethacrylate resin-based root canal sealer; while GK group was obturated with conventional guttapercha with the same sealer.Afterobturation, the specimens were incubated (370C, 24 h), then the speciments was cut verticaly. The gap existance was measured using SEM and given score 0-3. Theresults were statistically analyzed with Kolmogorov Smirnov test. Results:Thelargest proportion distribution in GBR group was score 0 (43.8%), whilst the largestproportion distribution in GK group was score 1 (81.3%), both these groups has no score 2, and the largest proportion distribution in GBR was score 3(12.5%) Conclusion: Resin-coated guttapercha as an obturation material hadinsignificancy diffrence statisticaly than conventional guttapercha of sealing ability, despite resin-coated guttapercha showed better sealing ability substantially.

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"ABSTRAK Latar Belakang: siler polidimetilsiloksan merupakan siler baru yang berpotensi menutup saluran akar lebih baik. Tujuan: membandingkan tingkat kerapatanpengisian di sepertiga apeks antara teknik kon tunggal (KT) dan downpackbackfill(DB) menggunakan siler polidimetilsiloksan. Metode: empat puluh gigipremolar bawah dibagi menjadi dua kelompok KT dan DB. Setelah pengisiansaluran akar, sampel diinkubasi, dilapisi cat kuku, direndam dalam tinta India, laludibuat transparan dengan metode Robertson. Kebocoran di sepertiga apeksdievaluasi dengan mikroskop stereo. Hasil: skor kebocoran terendah (0-0,5 mm)dimiliki oleh kelompok KT dan skor kebocoran tertinggi (>1 mm) dimiliki olehkelompok DB. Kesimpulan: teknik kon tunggal memberikan tingkat kerapatanyang lebih baik dibandingkan downpack-backfill, walaupun secara statistik perbedaan antar keduanya tidak signifikan. ABSTRACT Background: polydimethylsiloxane sealer is a brand new sealer that potentiallyhas a better sealing ability to the root canal. Aim: to compare the apical sealingability in one third apex between single cone (SC) and downpack-backfill (DB)technique using polydimethylsiloxane sealer. Methods: fourty extracted humanmanibular premolars devided into two group, SC and DB. After obturated withpolydimethylsiloxane sealer, samples were stored in incubator, coated with nailvarnish, immersed in India ink, and then specimens were cleared usingRobertson?s technique. The apical dye penetration was evaluated using astereomicroscope. Result: the lowest leakage score (0-0,5 mm) was found in SCgroup and the highest score(>1 mm) in DB group. Summary: single conetechnique exibited better sealing ability rather than downpack-backfill technique, although no statistical significant difference between this two techniques. ;Background: polydimethylsiloxane sealer is a brand new sealer that potentiallyhas a better sealing ability to the root canal. Aim: to compare the apical sealingability in one third apex between single cone (SC) and downpack-backfill (DB)technique using polydimethylsiloxane sealer. Methods: fourty extracted humanmanibular premolars devided into two group, SC and DB. After obturated withpolydimethylsiloxane sealer, samples were stored in incubator, coated with nailvarnish, immersed in India ink, and then specimens were cleared usingRobertson?s technique. The apical dye penetration was evaluated using astereomicroscope. Result: the lowest leakage score (0-0,5 mm) was found in SCgroup and the highest score(>1 mm) in DB group. Summary: single conetechnique exibited better sealing ability rather than downpack-backfill technique, although no statistical significant difference between this two techniques. ;Background: polydimethylsiloxane sealer is a brand new sealer that potentiallyhas a better sealing ability to the root canal. Aim: to compare the apical sealingability in one third apex between single cone (SC) and downpack-backfill (DB)technique using polydimethylsiloxane sealer. Methods: fourty extracted humanmanibular premolars devided into two group, SC and DB. After obturated withpolydimethylsiloxane sealer, samples were stored in incubator, coated with nailvarnish, immersed in India ink, and then specimens were cleared usingRobertson?s technique. The apical dye penetration was evaluated using astereomicroscope. Result: the lowest leakage score (0-0,5 mm) was found in SCgroup and the highest score(>1 mm) in DB group. Summary: single conetechnique exibited better sealing ability rather than downpack-backfill technique, although no statistical significant difference between this two techniques. "

"Dalam studi ini, campuran Chlorinated Rubber (CR), Polydimethylsiloxane (PDMS) dan Grafena Oksida (GO) diteliti secara sistematis untuk diusulkan sebagai aditif anti-fouling dalam poliuretan (PU). Peningkatan kekuatan tarik diperoleh dengan penambahan campuran CR dan PDMS:GO. Spektrum Forier Transform Infra-red menunjukkan penurunan intensitas regangan ikatan rangkap C=C dan memunculkan ikatan Si pada senyawa kimia PU. Untuk mengetahui peran fungsi anti-fouling, sampel direndam di laut selama dua bulan. Selanjutnya sampel yang direndam di laut dikarakterisasi menggunakan mikroskop optik dan pengujian mekanik. Pengamatan mikroskop optik diperoleh bahwa penambahan CR mengurangi pertumbuhan teritip mikro dan penambahan PDMS:GO menurunkan pertumbuhan alga mikro. Untuk penelitian lebih lanjut, pengukuran Electrochemical Impedance Spectroscopy (EIS) dikembangkan untuk mengetahui spektrum impedansi sampel sebelum dan sesudah perendaman dalam air distilasi. Hal ini menunjukkan bahwa impedansi total berubah dengan perendaman. Elemen rangkaian ekivalen dari spektrum impedansi dimodelkan untuk mengekstrak resistansi seri, resistansi paralel, dan kapasitansi. Menariknya, resistansi seri, resistansi paralel dan kapasitansi berubah secara konsisten yang menunjukkan kemungkinan pelepasan elemen anti-fouling selama perendaman untuk setiap sampel. Selanjutnya dilakukan uji pelapukan di bawah sinar ultraviolet (UV) selama 500 jam untuk mengetahui kerusakan sifat mekanik. Hasil pengamatan menunjukkan bahwa pada awal paparan sinar UV hingga 80 jam kuat tarik meningkat signifikan.

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In this study, a mixed chlorinated rubber (CR), polydimethylsiloxane (PDMS) and graphene oxide (GO) was systematically investigated to propose as anti-fouling additives in polyurethane (PU). The increasing of tensile strength were observed by the addition of the mixture of CR and PDMS:GO. The Fourier transform infra-red spectra showed the decreasing of a C=C strain group and increasing Si bond of chemical compounds of PU, respectively. In order to investigate the role of the anti-fouling function, the samples were immersed in the sea for two months. Further the immersed samples in the sea were characterized using optical microscope and mechanical testing. The optical microscope observation obtained the addition of CR reduced the growth of micro barnacle and the addition of PDMS:GO decreased the growth of micro algae. To more elaboration, the electrochemical impedance spectroscopy (EIS) measurement was developed to investigate the impedance spectra of the samples before and after immersion in distilled water. It showed that the total impedance changed by the immersed samples. The equivalent circuit element from the impedance spectra was modelled to extract the series resistance, parallel resistance and capacitance. Interestingly, the series resistance, parallel resistance and capacitance were changed consistently which indicated the probably of the anti-fouling element release during the immersion for each sample. Furthermore, the ageing test under ultraviolet (UV) light was performed for 500 hours to investigate the decay of the mechanical properties. It was observed that the UV light ageing initially increased the tensile strength until of 80 hours exposure."

"Latar Belakang: Kerapatan pengisian saluran akar merupakan hal yang penting bagi kesuksesan perawatan saluran akar. Pengambilan gutaperca dan preparasi pasak pada restorasi gigi pasca PSA dapat mengganggu kerapatan bahan pengisi yang tersisa. Siler saluran akar sebaiknya dapat mempertahankan kerapatan bahan pengisi setelah dilakukan pembuangan gutaperca dan preparasi pasak. Siler epoksi telah digunakan secara luas karena memiliki sifat adhesif dan kerapatan yang baik dengan dinding saluran akar. Baru-baru ini siler MTA juga telah dikembangkan dan dikatakan memiliki sifat adhesif dan kerapatan yang baik. Tujuan: Tujuan penelitian ini adalah untuk menganalisis kerapatan sepertiga apeks pengisian saluran akar dengan siler epoksi dan siler MTA setelah dilakukan preparasi pasak. Metode: Preparasi saluran akar dilakukan pada empat puluh gigi manusia dengan saluran akar tunggal dan dibagi menjadi dua kelompok secara acak, yaitu kelompok siler epoksi (SE) dan siler MTA (SM). Preparasi saluran akar dilakukan dengan ProTaper rotary, dan irigasi NaOCl 2,5% dan EDTA cair 17%. Preparasi pasak dengan peeso reamer dilakukan 7 hari pasca pengisian dengan menyisakan bahan pengisi sepanjang 5 mm di bagian apeks. Kerapatan sisa bahan pengisi diukur dengan menghitung penetrasi tinta pada sampel yang telah ditransparansi. Pengamatan dilakukan dengan mikroskop stereo perbesaran 20 kali. Skor 1 untuk penetrasi tinta 0-0,5 mm, skor 2 untuk penetrasi tinta 0,51-1mm, dan skor 3 untuk penetrasi tinta >1 mm. Hasil: Data penetrasi tinta pada kelompok SE: skor 1 sebanyak 35%, skor 2 sebanyak 30%, dan skor 3 sebanyak 35%. Sedangkan pada kelompok SM skor 1 sebanyak 25%, skor 2 sebanyak 30%, dan skor 3 sebanyak 45%. Uji Chi-Square menunjukkan terdapat perbedaan kerapatan yang tidak bermakna antara kelompok SE dan SM. Kesimpulan: Pengisian sepertiga apeks pasca preparasi pasak pada kelompok siler epoksi lebih rapat dibandingkan kelompok siler MTA, namun keduanya tidak berbeda bermakna.

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Background: Root canal obturation sealing ability is an important part of endodontic success. Restoration of endodontically treated teeth may sometimes need post and core. Post preparation procedure requires partial removal of the root canal filling to prepare adequate space for the post and retention of the intra canal post. Root canal sealer should be able to maintain obturation seal. Epoxy sealer has been widely used because its adhesive properties and sealing ability. Recently MTA sealer has also been developed and according to the manufacturer, MTA sealer also has adhesive properties and good sealing ability.

Aim: The aim of this study was to analyze the sealing ability of apical third of the root canal a with epoxy sealer and MTA sealer after post preparation.

Methods: Root canal preparation was performed on forty human teeth with a crown down technique; irrigation with 2,5% NaOCl and 17% EDTA, and lubrication with RC-Prep were used. The canals were then filled with gutta-percha and root canal sealer utilizing a cold lateral condensation technique. MTA Fillapex or AH-Plus were used in the experimental groups. The teeth were cleared with Robertson technique and examined under a stereomicroscope. Post preparation was performed with peeso reamer 7 days after obturation. Residual seal was measured by counting dye leakage. Observations were made with a stereo microscope magnification of 20 times. Score 1 for ink penetration 0-0.5 mm, a score of 2 to 0.51 - 1mm dye leakage, and a score of 3 for dye leakage > 1 mm.

Results: Dye leakage on the SE group: score1 : 35 %, score 2: 30 %, and score 3: 35 %. While the SM group: score 1: 25 %, score 2: 30 %, and score 3: 45 %. Chi-Square test showed no significant differences in density between the SE and SM group.

Conclusion: Dye leakage demonstrated that SE group show less leakage than SM group. Chi-Square test show there is no significant difference between both group."

"ABSTRAKLatar belakang: Siler dapat meningkatkan sealing ability Tujuan: Menganalisis dan membandingkan sealing ability pengisian saluran akar dengan siler bioceramic dan resin metakrilat. Metode: Tiga puluh gigi dengan saluran akar tunggal, dipreparasi dengan ProTaper Next, dibagi dalam dua kelompok secara acak; Masing-masing grup diisi dengan gutaperca berlapis, untuk kelompok 1 menggunakan Siler Bioceramic SB dan kelompok 2 Siler Resin-Metakrilat SRM . Pengukuran kebocoran dengan tinta india pada daerah sepertiga apikal apeks yang dipotong secara melintang, kemudian dilihat dengan mikroskop stereo. Hasil: Kelompok siler bioceramic menunjukkan celah tepi yang lebih sedikit jika dibandingkan dengan siler resin-metakrilat. Kesimpulan: Sealing ability pengisian saluran akar menggunakan siler bioceramic SB lebih baik dibandingkan dengan siler resin-metakrilat SRM .

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ABSTRAKBackground Sealer may increase sealing ability. Purpose To compare and analyze sealability of obturation using the bioceramic sealer and methacrylate resin based sealer. Methods thirty single rooted teeth were prepared using ProTaper Next and divided randomly into two groups the first group was obturated with Bioceramic Sealer SB while the second group was obturated with methacrylate resin based sealer SRM . Each group used coated gutta percha as a core material. Apical third marginal adaptation was evaluated by observing the dye penetration between the obturation material and the root canal walls on cross sectioned samples. Results SB Showed the least microleakage in the apical third marginal adaptation, followed by SRM. Conclusion Obturation of root canal using bioceramic sealer has the best sealing ability at the apical third, compared to SRM."

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Latar Belakang: Siler kalsium silikat bersifat hidrofilik, berikatan secara kimia ke dentin,  membentuk hidroksiapatit, memiliki waktu kerja dan settingideal, dan tidak terjadi penyusutan. Siler resin epoksi yang banyak digunakan saat ini memiliki kekurangan berupa adanya penyusutan saat mengeras. Evaluasi adaptasi siler dapat menentukan kemampuan kerapatan suatu siler. Salah satu metode untuk mengevaluasi kemampuan kerapatan siler adalah dengan Scanning Electron Microscopy (SEM). Tujuan: Menganalisis perbedaan adaptasi siler pada sepertiga tengah dinding saluran akar antara siler berbahan dasar kalsium silikat dengan resin epoksi.Metode: Tiga puluh dua sampel gigi premolar mandibula dibagi menjadi dua kelompok, yaitu kelompok 1: siler resin epoksi dan kelompok 2: siler kalsium silikat. Sampel dipreparasi dan diobturasi dengan siler berbahan dasar kalsium silikat dan resin epoksi. Selanjutnya, gigi dipotong vertikal dan disiapkan untuk analisis adaptasi siler menggunakan SEM. Data tersebut dianalisis secara statistik dengan uji Chi-square. Hasil Penelitian: Tidak terdapat perbedaan bermakna antara adaptasi siler kalsium silikat dan resin epoksi secara statistik (p>0.05). Partikel resin epoksi secara keseluruhan tampak berukuran lebih besar dibandingkan dengan kalsium silikat. Kesimpulan: Tidak terdapat perbedaan adaptasi siler secara statistik antara siler berbahan dasar kalsium silikat dengan resin epoksi pada sepertiga tengah dinding saluran akar, namun secara klinis sampel siler kalsium silikat lebih sedikit menunjukkan gap/ celah dan lebih banyak yang berpenetrasi ke dalam tubuli dentin dinding saluran akar.

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Background: Calcium silicate sealer is hydrophilic, chemically bonded to dentin, forms hydroxyapatite, has an ideal working and setting time, and does not shrink. The epoxy resin sealer that is widely used today has the disadvantage of shrinkage when hardening. Evaluation of the adaptation of the sealer can determine the sealing ability of a sealer. One of the method for evaluating the sealing ability of a sealer is Scanning Electron Microscopy (SEM). Objective: To analyze differences in the adaptation of sealers in middle third of root canal wall between the calcium silicate and epoxy resin based sealer. Methods: Thirty-two mandibular premolar teeth samples were divided into two groups, that are group 1: epoxy resin sealer and group 2: calcium silicate sealer. Samples were prepared and obturated with calcium silicate and epoxy resin based sealer. Next, the teeth were cut vertically and prepared for analysis of the sealer adaptation using SEM. The data was analyzed statistically by Chi-square test. Results: There was no significant difference between the adaptation of calcium silicate and epoxy resin sealer statistically (p> 0.05). Overall epoxy resin’s particles appear larger than calcium silicate. Conclusion: There was no statistical difference in the adaptation of sealers between calcium silicate and epoxy resin based sealer in middle third of root canal wall, but clinically fewer calcium silicate sealer samples showed gaps and more penetrated into dentinal tubules of root canal wall.

 

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