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Abstrak :
Latar Belakang: MTA modifikasi merupakan perkembangan material MTA konvensional sebagai upaya untuk memperbaiki sifat fisiknya. Tujuan: Menganalisis perbedaan kebocoran mikro antara MTA konvensional dan MTA modifikasi pada penutupan perforasi. Metode: Empat puluh spesimen gigi premolar dengan perforasi lateral, ditutup dengan MTA konvensional dan MTA modifikasi. Setelah 24jam, spesimen direndam dalam tinta india selama 24jam. Kebocoran mikro dinilai dengan melihat penetrasi tinta india menggunakan mikroskop stereo (20x). Uji statistik menggunakan Chi-Square (p<0,05) Hasil: MTA modifikasi menunjukkan nilai kebocoran mikro (0,5-1mm) lebih kecil (25%) dibandingkan MTA konvensional (45%), namun tidak berbeda bermakna. Kesimpulan: Terlihat kebocoran mikro pada penutupan perforasi, baik menggunakan material MTA konvensional maupun MTA modifikasi. ......Background: Modified MTA is an advancement of MTA to improve its undesirable properties. Objective: To analyze the microleakage of conventional MTA and modified MTA in perforation treatment. Methods: Forty specimens of human’s premolar teeth with lateral perforations were sealed by conventional MTA and modified MTA. After 24 hours, the specimens were immersed in Indian ink for 24 hours. The score of microleakage was determined using stereo microscope (20x). Statistical analysis was done by Chi Square (p<0,05). Result: Less microleakage score (0,5-1mm) was detected in modified MTA (25%) compared to conventional MTA (45%), although not statistically significant. Conclusion: Microleakages were detected in both conventional and modified MTA as material for perforation treatment.

Abstrak :
Tumpatan bonded amalgam merupakan tumpatan amalgam yang ditambahkan bahan adhesif /pelapis antara amalgam dengan struktur gigi untuk mengurangi kebocoran mikro. Tujuan : Untuk mengevaluasi kebocoran mikro pada tumpatan bonded amalgam dengan resin semen dan Glass Ionomer Cement. Metode : Sejumlah 40 gigi premolar kavitas kelas I (3x3x2cm; 4 kelompok dengan n=10)) direndam dalam methylene blue 1% selama 24 jam kemudian dipotong. Penetrasi pewarna diamati dengan stereomikroskop dan dinilai dengan skor 0-3. Hasil dievaluasi dengan uji Kruskal Wallis dan Mann-Whitney. Hasil : Perbedaan bermakna diantara tiap kelompok penelitian. Kesimpulan : Terdapat kebocoran mikro pada seluruh spesimen dengan nilai yang berbeda.

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Bonded amalgam restoration is amalgam restoration bonded to tooth structure with adhesive or liner. Objective : to evaluate microleakage on bonded amalgam restorations. Methods : 40 premolar teeth with cavity class I, 3x3x2 cm, 4 groups (10 specimens in each group) were immersed in methylene blue 1% for 24 hours and cutted. Penetration of dyes were observed by stereomicroscope and measured with penetration score 0-3 and evaluated by Kruskal Wallis and Mann-Whitney. Results : there was significant differences between each groups. Conclusions : There was microleakage on every groups with different values.

Abstrak :
ABSTRACT
For a given sealant, successful pit and fissure sealing is principally governed by the enamel conditioning technique and the presence of moisture contamination. A new generation of hydrophilic resin sealants is reported to tolerate moisture. This study investigates the impact of Er YAG laser preconditioning and moisture contamination on the microleakage of a recent hydrophilic sealant. Occlusal surfaces of extracted human molars were either acid etched (n = 30), or successively lased and acid etched (n = 30). Ten teeth from each group were either air dried, water contaminated, or saliva-contaminated prior to sealing with UltraSeal XT hydro. Samples were inspected for penetration of fuchsin dye following 3000 thermocycles between 5 and 50 C, and the enamel sealant interfaces were observed by scanning electron microscopy (SEM). Significant differences in microleakage were evaluated using the Mann Whitney U test with Bonferroni adjustment (p = 0.05). Laser pre-conditioning significantly reduced dye penetration irrespective of whether the enamel surface was moist or dry. Microleakage of watercontaminated acid etched teeth was significantly greater than that of their air-dried or salivacontaminated counterparts. SEM analysis demonstrated good adaptation in all groups with the exception of water-contaminated acid etched teeth which exhibited relatively wide gaps. In conclusion, this hydrophilic sealant tolerates the presence of saliva, although water was found to impair its sealing ability. Laser pre-conditioning significantly decreases microleakage in all cases.

Abstrak :
Penelitian ini bertujuan untuk mengevaluasi pengaruh durasi penyinaran dengan LED terhadap kebocoran tepi mikro restorasi resin komposit bulk-fill. Tiga puluh gigi premolar dipreparasi pada permukaan oklusal dengan panjang 4 mm, lebar 3 mm, dan kedalaman 4 mm yang disesuaikan dengan anatomi masing-masing gigi. Spesimen dibagi menjadi tiga kelompok secara acak berdasarkan durasi penyinaran 10 detik, 20 detik, dan 30 detik. Pengukuran kebocoran tepi mikro dilakukan menggunakan metode penetrasi zat warna, larutan methylene blue 1. Data yang diperoleh dianalisis menggunakan uji statistik Kruskal-Wallis. Hasil analisis tidak menunjukan perbedaan bermakna p>0,05 pada semua kelompok. Durasi penyinaran tidak memberikan pengaruh yang signifikan terhadap kebocoran tepi mikro restorasi resin komposit bulk-fill. ......This aims to evaluate the influence of different exposure time on its microleakage. Cavity preparation was perfomed on the occlusal side of thirty human premolar teeth with 4 mm length, 3 mm width, and 4 mm depth. Specimen were randomly divide into three groups according to exposure times 10s, 20s, and 30s. The microleakage was measured using 1 methylene blue. Data were statistically analyzed by Kruskal Wallis. The result showed insignificant differences in all groups p 0,05. Exposure times was not significantly affected the microleakage of bulk fill composite resin restoration.

Abstrak :
Latar Belakang. Kebocoran mikro masih menjadi masalah utama dalam bidang kedokteran gigi karena dapat menyebabkan bakteri dan cairan mulut masuk diantara dinding kavitas dan tumpatan. Tujuan. Mengevaluasi kebocoran mikro pada tumpatan GIC Konvensional dan RMGIC. Metode. Gigi premolar dipreparasi pada bagian oklusal dengan ukuran 3 x 3 x 2,5 mm, kemudian ditumpat dengan GIC Fuji IX, Fuji II dan Fuji II LC. Kemudian, spesimen direndam dalam akuabides, setelah 24 jam direndam dalam larutan pewarna methylene blue 1%, kemudian dipotong melintang arah bukolingual dan diamati di bawah stereomikroskop. Hasil Penelitian. Kebocoran mikro paling besar terjadi pada GIC Fuji IX, diikuti dengan Fuji II dan Fuji II LC. Kesimpulan. Terdapat kebocoran mikro pada tumpatan GIC Konvensional dan RMGIC, dimana derajat kebocoran mikro pada GIC Konvensional lebih besar dibandingkan RMGIC.

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Background. Microleakage around restoration is still a major problem in clinical dentistry, which can cause the penetration of bacteria and oral fluids between the cavity wall and the restoration. Objectives. To evaluate the microleakage of Conventional GIC and RMGIC restoration. Methods. The premolars were prepared oclusally to a size of 3 x 3 x 2,5 mm dimensions, and were filled with GIC Fuji IX, Fuji II, and Fuji II LC. Then, all specimens were stored in aquabidest, after 24 hours all specimens were immersed in 1 % methylene blue dye, then were sectioned in a buccolingual direction, and inspected under stereomicroscope. Results. GIC Fuji IX showed maximum leakage followed by Fuji II and Fuji II LC. Conclusions. The microleakage was evident in Conventional GIC and RMGIC restoration, where the microleakage degree in Conventional GIC were greater than RMGIC.

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. ]