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Abstrak :
Latar Belakang: Semen Ionomer Kaca (SIK) adalah bahan restorasi yang terdiri dari bubuk kaca kalsium fluoroaluminosilikat dan asam oliakrilik. Pada tahap awal reaksi setelah dilakukan pencampuran, SIK sensitif terhadap udara dan air yang dapat menghambat reaksi pengerasan, sehingga perlu diberikan perlindungan dengan material yang kedap air dan salah satu material tersebut adalah bonding agent. Tujuan: Menganalisis hubungan kedalaman intrusi air terhadap kekerasan SIK. Metode: 12 spesimen SIK dengan diameter 5 mm dan tebal 2 mm, dibagi menjadi 3 kelompok: kelompok 1 tanpa bahan pelindung, kelompok 2 diaplikasikan varnis, dan kelompok 3 diaplikasikan bonding agent. Seluruh spesimen direndam dalam methylene blue 0,1% selama 24 jam dan di masukkan ke dalam inkubator dalam suhu 370C. Selanjutnya setiap sampel dibelah menjadi 2 bagian, pada satu bagian dilakukan pengukuran terhadap kedalaman intrusi air menggunakan measuring microscope sedangkan pada satu sisi lainnya dilakukan pengukuran terhadap kekerasan menggunakan Knoop Microhardness Tester. Kemudian hasilnya dianalisis secara statistik. Hasil: Pada tiap kelompok terdapat hubungan korelasi yang kuat antara kedalaman intrusi air dan kekerasan SIK dengan nilai korelasi -0,868 dan nilai p < 0,05 . Kesimpulan: Semakin dalam intrusi air pada SIK, semakin rendah kekerasan SIK.

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Background: Glass Ionomer Cement (GIC) is a restorative material consisting of calcium fluoroaluminosillicate glass powder and polyacrylic acid. At the initial reaction after mixing, GIC is sensitive to the air and water which can inhibit the setting reaction, therefore it is needed a protection by materials which are watertight and one of them is bonding agent. Aim: To analyze the relation of the depth water intrusion to the hardness of GIC. Method: 12 specimen with 5 mm in diameter and 2 mm in thickness, were divided into 3 groups: the first group wasn?t given a coating, the second group was given varnish, and the third group was given bonding agent. All specimen were soaked in methylene blue 0,1% during 24 hours and placed in incubator with 370C in temperature. Furthermore, each sample was cut into 2 parts, one part was measured to know the depth of water intrusion by measuring microscope while the other part was measured to know its hardness by Knoop Microhardness Tester. Afterwards, the result is analyzed statistically. Result: There is a strong correlation between the depth of water intrusion and the hardness of GIC in each group with correlation value -0,868 and p value < 0,05. Conclusion: The deeper the water intrusion of GIC, the lower the hardness of GIC.

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 :
Latar Belakang: Semen Ionomer Kaca (SIK) adalah bahan restorasi yang terdiri dari bubuk kaca kalsium fluoroaluminosilikat dan asam poliakrilik. Pada tahap awal reaksi setelah pencampuran, SIK sensitif terhadap udara dan air yang dapat menghambat reaksi pengerasan sehingga perlu perlindungan dengan material yang kedap air dan salah satunya adalah bonding agent. Tujuan: menganalisis efek bonding agent terhadap kedalaman intrusi air pada SIK. Metode: 12 spesimen SIK diameter 5 mm dan tebal 2 mm, dibagi menjadi 3 kelompok: kelompok 1 tanpa pelapisan, kelompok 2 dilapis varnis, dan kelompok 3 dilapis bonding agent. Seluruh spesimen direndam dalam methylene blue 0,1% selama 24 jam dan dimasukkan dalam inkubator dengan suhu 370 C. Kemudian setiap sampel dibelah menjadi 2, yang satu sisi diukur kedalaman intrusi airnya menggunakan measuring microscope dan bagian lainnya diukur kekerasan permukaannya menggunakan Knoop Microhardness Tester. Kemudian hasilnya dianalisis secara statistik. Hasil: Pada ketiga kelompok terlihat adanya perbedaan bermakna dengan nilai kedalaman intrusi air tertinggi ada pada kelompok tanpa perlakuan dan paling rendah pada kelompok bonding agent. Kesimpulan: Aplikasi bonding agent dapat menurunkan kedalaman intrusi air pada SIK.

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Background: Glass Ionomer Cement (GIC) is a restorative material containing calcium fluoroaluminosilicate glass powder and polyacrylic acid. At initiation stage of reaction after mixing, GIC becomes sensitive with air and water which can inhibit setting reaction so it needs to be protected with waterproof material, the one is bonding agent. Aim: To analize bonding agent?s effect in depth of water intrusion in GIC. Method: 12 GIC speciments with 5 mm in diameter and 2 mm in height were divided into 3 groups: group 1 without any protecting layer, group 2 was coated with varnish, and group 3 was coated with bonding agent. All speciments were immersed in methylene blue 0,1% as long as 24 hours and was put into incubator 370 C. Then, each samples was cut off into 2 pieces, one side was measured for water intrusion using measuring microscope dan the other was measured for surface hardness using Knoop Microhardness Tester. After that, the result was analized statistical. Result: At 3 groups showed there was significant difference, the highest water intrusion depth score was group without any protecting layer and the lowest score was bonding agent?s group. Conclusion: Application of bonding agent could decrease the depth of water intrusion in GIC.

Abstrak :
Latar Belakang: Semen Ionomer Kaca (SIK) adalah bahan restorasi yang terdiri bubuk kaca kalsium fluoroaluminosilikat dan asam poliakrilik. Pada tahap awal reaksi setelah pencampuran, SIK sensitif terhadap udara dan air yang dapat menghambat reaksi pengerasan, sehingga perlu perlindungan dengan material yang kedap air dan salah satunya adalah bonding agent. Tujuan: menganalisis efek bonding agent terhadap kekerasan SIK. Metode: 12 spesimen SIK diameter 5mm dan tebal 2mm, dibagi menjadi 3 kelompok: kelompok 1 tanpa pelapisan, kelompok 2 dilapis varnis dan kelompok 3 dilapis bonding agent. Seluruh spesimen direndam dalam methylen blue 0,1% selama 24 jam dan di masukkan dalam inkubator dalam suhu 37oC. Kemudian setiap sampel dibelah menjadi 2, yang satu sisi diukur kedalaman intrusi airnya dengan measuring microscope dan bagian lainnya diukur ke kekerasan permukaannya dengan Knoop Microhardness Tester. Kemudian hasilnya dianalisis secara statistik. Hasil: Pada ketiga kelompok terlihat adanya perbedaan bermakna dengan nilai kekerasan SIK tertinggi ada pada kelompok bonding agent. Kesimpulan: Aplikasi bonding agent dapat meningkatkan kekerasan SIK.

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Background: Glass Ionomer Cement (GIC) is a restorative material containing calcium fluoroalluminosillicate glass powder and polyacrylic acid. At the initial reaction after mixing process, GIC becomes sensitive to the air and water which can inhibit setting reaction, therefore it needs to be protected with waterproof material, such as bonding agent. Aim: Analyzing effect of bonding agent application in the hardness of GIC. Method: 12 GIC specimens with 5 mm in diameter and 2 mm in height were divided into 3 groups: first group were without coating, second group were coating with varnish, and third group were covering with bonding agent. All specimens were immersed in methylene blue 0,1% for 24 hours and stored into incubator 37o C. Furthermore, each sample was cut into 2 pieces, one part was measured for water intrusion using measuring microscope while the other part was measured for surface hardness using Knoop Microhardness Tester. Afterwards, the result was analized statistical. Result: At 3 groups show there was significant difference, the highest hardness score is bonding agent?s group. Conclusion: Application of bonding agent could increase the hardness of GIC.