ABSTRAKGlass Ionomer Cement (GIC) merupakan bahan restorasi yang memiliki sifat adhesif, sewarna dengan gigi dan memiliki kemampuan pelepasan ion uor yang dipengaruhi derajat keasaman (pH). Air sungai Desa Anjir Pasar memiliki sifat yang asam dengan pH 3. Derajat keasaman (pH) asam dapat meningkatkan kadar kelarutan ion uor pada GIC. Tujuan penelitian ini untuk mengetahui perbedaan kadar kelarutan ion uor pada GIC setelah perendaman dalam air sungai Desa Anjir Pasar dan akuades. Penelitian ini menggunakan sampel GIC dengan diameter 5 mm dan ketebalan 2 mm. Masing-masing kelompok direndam dalam air sungai dan akuades selama 7 hari kemudian dihitung kadar kelarutan ion uornya. Data diuji menggunakan analisis parametrik Independent T-Test 95% (α=0,05) dan didapatkan p=0,002 (p<0,05). Dari hasil tersebut diketahui bahwa terdapat perbedaan bermakna antara kadar kelarutan ion uor setelah perendaman air sungai dengan kadar kelarutan ion uor setelah perendaman akuades. Disimpulkan bahwa terdapat perbedaan yang signi kan antara kadar kelarutan ion uor pada GIC setelah perendaman dalam air sungai Desa Anjir Pasar Barito Kuala yang lebih tinggi daripada setelah perendaman dalam akuades. ISSN 2442ISSN -2576 Tersedia online di http://jurnal.ugm.ac.id/mkgi DOI: http://dx.doi.org/10.22146/majkedgiind.11257Majalah Kedokteran Gigi Indonesia Vol 2 No 2 -Agustus 2016 ISSN 2460-0164 (print), PENDAHULUANKesehatan gigi dan mulut secara tidak langsung menjadi bagian penting dan tidak dapat dipisahkan dari kesehatan tubuh secara umum sehingga merupakan investasi seumur hidup. Penyakit gigi dan mulut yang paling banyak ditemukan di masyarakat luas yaitu karies gigi, karies tidak hanya terjadi pada orang dewasa tetapi dapat pula terjadi pada anak.1 Salah satu cara penanggulangan karies adalah dengan membuang jaringan karies dan menumpatnya dengan bahan restorasi. Bahan restorasi berfungsi untuk memperbaiki dan merestorasi struktur gigi yang rusak.2 Bahan yang sering digunakan untuk merestorasi baik gigi sulung maupun gigi tetap dalam praktek kedokteran gigi adalah bahan restorasi adhesif sewarna gigi. Bahan restorasi sewarna gigi yang banyak beredar di pasaran salah satunya adalah Glass Ionomer Cement (GIC). 3Bahan GIC yang pertama kali diperkenalkan pada bidang kedokteran gigi oleh Wilson dan Kent tahun 1972. 4 Mereka menggabungkan keunggulan sifat translusen dan pelepasan ion uor dari semen silikat serta biokompatibilitas dan sifat adhesif dari
Background: Chlorhexidine 2% have antimicrobial ability and also can strengthen dentin bond with resin composite by inhibiting enzyme matrix metalloproteinases (MMP) which the degradation of adhesive-dentin. Resin composite bioactive has the advantage resistant to the pressure. Objective: To prove the effect of chlorhexidine 2% as a cavity cleanser on the shear bond strength of resin composite bioactive. Method: True Experimental study with post-test only with control group design using 20 dentin maxillary first premolars and divided into four groups: chlorhexidine gluconate 2% before etching, chlorhexidine gluconate 2% after etching, chlorhexidine digluconate 2% before etching, and 2% chlorhexidine digluconate after etching. Result: One Way ANOVA statistical test has indicated no significant difference in the chlorhexidine 2% treatment group before etching or after etching. Conclusion: The application of chlorhexidine 2% before etching or after etching did not significantly affect the shear bond strength of bioactive resin composite.Key words: Bioactive resin composite, Chlorhexidine, Shear bond strength.ABSTRAKLatar Belakang:Chlorhexidine 2% memiliki kemampuan antimikroba dan juga dapat memperkuat pelekatan dentin dengan resin komposit dengan cara menghambat enzyme matrix metalloproteinases (MMP) yang dapat menurunkan degradasi dentin. Resin komposit bioaktif memiliki keunggulan tahan terhadap tekanan. Tujuan: Untuk membuktikan pengaruh chlorhexidine 2% sebagai cavity cleanser terhadap kuat geser resin komposit bioaktif. Metode: Penelitian eksperimental murni (True Experimental) dengan rancangan posttestonlywith control group design yang menggunakan 20 gigi premolar 1 rahang atas dan dibagi menjadi 4 kelompok: chlorhexidine gluconate 2% sebelum etsa, chlorhexidine gluconate 2% sesudah etsa, chlorhexidine digluconate 2% sebelum etsa, dan chlorhexidine digluconate 2% sesudah. Hasil: Uji statistik One Way Anova menunjukkan tidak terdapat perbedaan yang bermakna pada kelompok perlakuan chlorhexidine 2% sebelum etsa atau sesudah etsa. Kesimpulan: Aplikasi chlorhexidine 2% sebelum etsa atau sesudah etsa tidak mempengaruhi secara bermakna terhadap kuat geser resin komposit bioaktif.Kata Kunci: Chlorhexidine, Kuat geser, Resin komposit bioaktif.
Background: Surface resistance between composite resin and dentin is currently one of the problems of restorative materials. Failure ofcomposite resin are still being reported in clinical studies with failure rates ranging between 5-45% based on observations for 5-17 years. Bioactive composite resin is a new type of composite resin that has mechanical and chemical properties similiar to teeth. The use of resins, bonding materials, drying time of the solvent, and type of solvent also affect the shear bond strength Purpose: The purpose of this study was to analyze the effect of air drying time bonding (self-etch) with ethanol as a solvent on the shear bond strength of bioactive composite resins. Methods: This study used 32 non-carious maxillary premolar teeth that were fixed using acrylic resin. Fiber glass with a diameter of 3 mm and thickness of 3 mm were fixed to dentin surface and applied using bioactive composite resin were divided into 4 treatment group, i.e. the group without air drying, 20 s, 40 s, and 60 s. Shear bond strength test using Universal Testing Machine. Results: One Way Anova and Post Hoc Bonferroni test showed significant differences with p=0,002 (p<0,05). The average shear bond strength value of the lowest bioactive composite resin in the group bonding without air drying with a value of 6.381 ± 2.818 MPa and the highest shear bond strength value of the bioactive composite resin in the 60 seconds bonding air drying group with a value of 11.873 ± 2.931 MPa. Conclusion: The air drying time of the bonding affects the shear bond strength of the bioactive composite resin.Keywords: Air drying time, bioactive composite resin, bonding, ethanol, shear bond strength.
Background: The most commonly used denture cleanser is alkaline peroxide. Long-term use of alkaline peroxide caused color change on denture base. One of which can be used as an alternative ingredient is kasturi leaf (Mangifera casturi). 50% kasturi leaf extract has antifungal properties against candida albicans. 50% kasturi leaf extract can be used as an alternative natural denture cleanser. Purpose: To know the immersion effect in 50% kasturi leaf extract on color changes of thermoplastic nylon. Methods: This study was true experimental with pretest dan posttest with control group design. 24 samples used simple random sampling with 8 samples in each groups. The sample is round sized 20mm in diameter and 3mm thickness. The treatment divided into 3 group, 50% leaf extract as treatment group, alkaline peroxide as positive control group, dan aquadest as negative control group. The color change was measured before and after immersion for five days using digital analysis tools with CIELab system. Results: One Way ANOVA dan Post Hoc Bonferroni statistical test showed significant differences (p<0,05) between the immersion groups in 50% kasturi leaf extract (6,25 ± 1,90), alkaline peroxide (4,00 ± 0,99), and aquadest (2,19 ± 0,71). Conclusion: The 50% kasturi leaf extract has effect on color changes of thermoplastic nylon denture base. The color changes in 50% kasturi leaf extract is higher than alkaline peroxide and aquadest. Keywords : Color changes, Kasturi leaf, Thermoplastic nylon
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