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Abstrak :
ABSTRAK Latar Belakang: Kebocoran mikro tumpatan resin komposit dengan dentin seringkali diakibatkan kerusakan serat kolagen dentin pada lapisan hybrid. Tujuan dari penelitian ini untuk mengevaluasi pengaruh larutan ekstrak biji anggur (EBA) sebagai bahan biomodifikasi dentin untuk mencegah kebocoran mikro antara resin komposit dan dentin. Metode: 52 spesimen dentin dibagi 2 kelompok. Kelompok 1 aplikasi larutan EBA selama 30 detik setelah etsa. Kelompok 2 sebagai kontrol. Analisis data dengan uji Mann-Whitney. Hasil: Kebocoran mikro kelompok larutan EBA lebih besar secara statistik berbeda bermakna dengan kontrol. Kesimpulan: Aplikasi larutan EBA setelah pengaplikasian etsa dapat meningkatkan kebocoran mikro antara tumpatan resin komposit dengan dentin.

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ABSTRACT Background : Microleakage of composite resin and dentin frequently caused by breakdown of collagen matrix at hybrid layer. The purpose of this study is to evaluate the influence grape seed extract (GSE) solution as dentin biomodification against microleakage between composite resin and dentin. Method : 52 dentin specimen divided into 2 groups. Groups 1 application GSE solution for 30 second after etching. Group 2 as control group. Result : GSE solution group significantly increase microleakage between composite resin and dentin compare to control group. Conclusion : Application of GSE solution after ethcing can increase microleakage between composite resin and dentin.

Abstrak :
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

Abstrak :
[ABSTRAK
Latar Belakang: Kebocoran mikro dinding gingiva restorasi resin komposit proksimal sering terjadi. Penelitian ini bertujuan untuk menganalisis perbedaan tingkat kebocoran mikro dinding gingiva antara RK flowable konvensional dan modifikasi dengan teknik precured dan cocured. Metode: 120 kavitas kelas II Black gigi premolar RA dibagi menjadi empat kelompok. Setelah dipreparasi berbentuk boks, kelompok 1 direstorasi dengan teknik precured (liner konvensional dan modifikasi) , kelompok 2 dengan teknik cocured (liner konvensional dan modifikasi), kelompok 3 dengan liner RK flowable konvensional (teknik precured & cocured),dan kelompok 4 dengan liner RK flowable modifikasi (teknik precured & cocured). Pengukuran penetrasi zat warna biru metilen 1% dilakukan setelah thermocycling. Gigi kemudian dibelah mesiodistal dan diamati menggunakan mikroskop stereo 2 pembesaran 25x. Analisis data dengan uji Kolmogorov-Smirnov. Hasil: Terdapat perbedaan bermakna antarkelompok teknik satu dan dua dengan tingkat kebocoran teknik cocured lebih rendah (p= 0.047) dan tidak terdapat perbedaan bermakna antara kelompok tiga dan empat (p= 0.985). Kesimpulan: Teknik cocured memiliki tingkat kebocoran lebih rendah dibandingkan dengan teknik precured. Namun tidak terdapat perbedaan bermakna antara kelompok dengan liner RK flowable konvensional dan modifikasi.

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ABSTRACT
Background: Microleakage of composite restoration in proximal often occurs on gingival wall. The purpose of this study to analyze the microleakage of gingival wall in composite restoration using technique cocured and precured with conventional and modification liner. Methods: Standardized class II were prepared on 60 extracted human upper premolar mesial and distal into 4 groups. Within a box-like cavities, the first group is restored with precured technique (conventional & modification liner), second group is restored with cocured technique (conventional & modification liner), third group is restored with conventional liner (precured & cocured technique), and fourth group is restored with modification liner (precured & cocured technique). The specimens were subjected to thermocycling, followed by immersion in 1% methylene blue dye for 24 hours. The teeth were sectioned mesio-distally and evaluated for microleakage under 25x magnification steremicroscope and score in ordinal scale (0-3). Statistical analysis was performed with the Kolmogorov-Smirnov test. Results: There was significant difference between first and second group, which is microleakage in second group lower than first (p= 0.047). There was no significant difference between third group and fourth (p= 0.985). Conclusion: Cocured technique have lower microleakage than precured technique. But there is no significance difference between conventional liner group and modification liner. ;Background: Microleakage of composite restoration in proximal often occurs on gingival wall. The purpose of this study to analyze the microleakage of gingival wall in composite restoration using technique cocured and precured with conventional and modification liner. Methods: Standardized class II were prepared on 60 extracted human upper premolar mesial and distal into 4 groups. Within a box-like cavities, the first group is restored with precured technique (conventional & modification liner), second group is restored with cocured technique (conventional & modification liner), third group is restored with conventional liner (precured & cocured technique), and fourth group is restored with modification liner (precured & cocured technique). The specimens were subjected to thermocycling, followed by immersion in 1% methylene blue dye for 24 hours. The teeth were sectioned mesio-distally and evaluated for microleakage under 25x magnification steremicroscope and score in ordinal scale (0-3). Statistical analysis was performed with the Kolmogorov-Smirnov test. Results: There was significant difference between first and second group, which is microleakage in second group lower than first (p= 0.047). There was no significant difference between third group and fourth (p= 0.985). Conclusion: Cocured technique have lower microleakage than precured technique. But there is no significance difference between conventional liner group and modification liner. , Background: Microleakage of composite restoration in proximal often occurs on gingival wall. The purpose of this study to analyze the microleakage of gingival wall in composite restoration using technique cocured and precured with conventional and modification liner. Methods: Standardized class II were prepared on 60 extracted human upper premolar mesial and distal into 4 groups. Within a box-like cavities, the first group is restored with precured technique (conventional & modification liner), second group is restored with cocured technique (conventional & modification liner), third group is restored with conventional liner (precured & cocured technique), and fourth group is restored with modification liner (precured & cocured technique). The specimens were subjected to thermocycling, followed by immersion in 1% methylene blue dye for 24 hours. The teeth were sectioned mesio-distally and evaluated for microleakage under 25x magnification steremicroscope and score in ordinal scale (0-3). Statistical analysis was performed with the Kolmogorov-Smirnov test. Results: There was significant difference between first and second group, which is microleakage in second group lower than first (p= 0.047). There was no significant difference between third group and fourth (p= 0.985). Conclusion: Cocured technique have lower microleakage than precured technique. But there is no significance difference between conventional liner group and modification liner. ]