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"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."

"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 ......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"