Background: The adhesion of root canal filling material to dentin is one of the crucial factors in determining the success of endodontic treatment. However, the smear layer that forms during instrumentation serves as an interface that impedes the bonding mechanism of the filling material. A proper irrigation solution is required to remove the smear layer and provide a dentin surface that supports the bonding mechanism of the filling material in establishing good adhesion. Purpose: This study aims to evaluate and compare the bond strength of filling material with different final irrigation solutions. Methods: Mandibular premolars were prepared by a crown down, pressure-less technique and divided into three final irrigation groups (2.5% NaOCl, 17% EDTA and 20% citric acid). The root canal of each tooth was obturated using epoxy sealer and gutta-percha. A two-millimetre-thick section of the apical third portion of each group was arranged for the push-out assessment using a universal testing machine in an apical to coronal direction at 1 mm/min crosshead speed. Results: A one-way ANOVA test indicated the difference in push-out bond strength among the groups (p<0.05). A post hoc Bonferroni test presented a statistically significant difference in the bond-strength value between the 2.5% NaOCl group compared with the 20% CA group (p<0.05). Conclusion: The push-out bond strength of root canal filling material is increased by applying a chelating agent as the final irrigation solution where 20% of CA presents the highest push-out bond strength.
Background:Resin-based sealers are widely used because they have good physical and biological properties and form micro-retention in dentin. There are also non-resin-based sealers. A non-resin-based sealer also has good micro-retention properties. The bond between dentin and the sealer can be improved by removing the smear layer. 2.5% NaOCl and 17% EDTA are the most common combination of irrigation solutions used to remove the smear layer. The use of 2% chlorhexidine after 17% EDTA at the end of irrigation will increase the antimicrobial effect and inhibit the activity of matrix metallo-proteinase (MMP).Objective: to determine push-out bond strength of obturation material with resin and non-resin sealers with 2.5% NaOCl, 17% EDTA and 2% CHX irrigation solution.Methods: The study used a true experimental method (post-test only group design). The treatment group (obturation with gutta percha and resin sealer; gutta-percha and non-resin sealer; gutta-percha only) were tested using a universal testing machine. Statistical tests using the Kruskal Wallis test and Mann Whitneytest.Results:Kruskall Wallis test showed that there were differences value of push-out bond strength in different obturation material with gutta percha and resin sealer; gutta-percha and non-resin sealer; gutta-percha only (p <0.05). The Mann Whiney test showed a significant difference bond strength between the non-resin sealer obturation group and gutta percha only group and between between the resin sealer obturation group and gutta percha only group (p<0.05).Conclusion:The use of sealer (a resin-based sealer and non-resin-based sealer) and 2.5% NaOCl, 17% EDTA and 2% CHX as irrigation solution can increase the bond strength of the obturation material. Keywords:bond strength, non-resin based sealer, resin based sealer. ABSTRAKLatarbelakang:Sealerberbahandasar resin banyakdigunakankarenadapatmembentukretensimikro pada dentin. Sealer non-resin juga memilikisifatretensimikro yang baik. Ikatan dentin dan sealerdapatditingkatkandenganmenghilangkansmear layer. NaOCl 2,5% dan EDTA17% adalahkombinasilarutanirigasi yang umumdigunakan. Penggunaanchlorhexidine 2% setelah EDTA 17% pada akhiririgasiakanmeningkatkanefekantimikroba dan menghambataktivitasmatrix metallo-proteinase (MMP). Tujuan:untukmenentukankekuatanikatanpush-outsealer resin dan non-resin denganNaOCl 2,5%, EDTA 17% dan CHX 2%. Metode:Penelitianinimenggunakanmetodeeksperimenmurni (post-test only group design). Kelompokperlakuan (gutta percha dan sealer resin; gutta percha dan sealer non-resin; gutta perchasaja) diujimenggunakanuniversal testing machine. Uji statistikmenggunakan uji Kruskal Wallis dan uji Mann Whitney. Hasil: Uji Kruskall Wallismenunjukkanadaperbedaannilaikekuatanperlekatanpush-outbahanobturasi yang berbedadengangutta percha dan sealer resin; gutta-percha dan sealer non-resin; hanyagutta-percha (p <0,05). Uji Mann Whitneymenunjukkanperbedaankekuatanperlekatan yang signifikanantarakelompoksealer non-resin dibandingkankelompoktanpasealer dankelompoksealer resin dibandingkankelompoktanpasealer (p <0,05). Kesimpulan:Penggunaansealer dan penggunaanNaOCl 2,5%, EDTA 17%, dan 2% CHX sebagailarutanirigasidapatmeningkatkankekuatanperlekatanbahanobturasi. Kata kunci:kekuatanperlekatan, sealer non-resin, sealer resin.
Background: River water is acidic, causing caries. Dental caries can be treated by performing restorations, one of which is GIC. Increasing technology, one of the newest is water settable GIC. Water-settable GIC can be directly mixed with sterile water making it easier for dentists because of its easy application. The advantage of water settable GIC is its high resistance to abrasion so it has a high shear bond strength. Objective: Knowing the effect of water settable GIC immersion in river water and PDAM water to diametric shear bond strength. Method: This.study used a true experimental laboratory research method with a post test only design with a control group design on 27 samples which were divided into 3 groups immersion. After immersion, the value of the diametral tensile strength is measured using a universal testing machine by compressing it until the sample breaks. Result: There was a significant difference between the value of the diametric tensile strength of the sample groups of water settable GIC that immersed in river water and the sample groups of conventional GIC that immersed in aquadest. Conclusion: There is an effect due to water settable GIC immersion in river water and PDAM water to shear bond.strength. Keywords: River Water, PDAM, Shear Bond Strength, Water Settable GIC. ABSTRAKLatar Belakang: Air sungai bersifat asam, sehingga menyebabkan terjadinya karies. Karies gigi dapat dirawat dengan melakukan restorasi, salah satunya adalah GIC. Semakin meningkatnya teknologi, Salah satu yang terbaru yaitu water settable GIC. Water-settable GIC dapat langsung di campur dengan air steril sehingga mempermudah dokter gigi karena pengaplikasiannya yang mudah. Kelebihan dari water settable GIC adalah resistensi yang tinggi terhadap abrasi sehingga memiliki kekuatan ikat geser yang tinggi.. Tujuan: Mengetahui pengaruh perendaman water settable GIC dalam air sungai dan air PDAM terhadap kekuatan ikat geser. Metode: Penelitian ini menggunakan metode penelitian eksperimental murni laboratoris (true experimental laboratories) dengan rancangan post test only with control group design pada 27 sampel yang dibagi menjadi 3 kelompok perendaman. Nilai kekuatan ikat geser pada sampel diukur dengan menggunakan universal testing machine. Hasil: Terdapat perbedaan bermakna antara nilai kekuatan ikat geser kelompok sampel water settable GIC yang direndam dalam air sungai dengan kelompok sampel water settable GIC yang direndam dalam akuades. Kesimpulan: Terdapat pengaruh akibat perendaman water settable GIC dalam air sungai dan air PDAM terhadap kekuatan ikat geser. Kata kunci : Air PDAM, Air sungai, Kekuatan Ikat Geser, Water settable GIC.
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