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Abstrak :
Ketahanan ikatan resin komposit-dentin merupakan salah satu penentu keberhasilan restorasi resin komposit. Tujuan penelitian ini adalah menganalisis efek klorheksidin terhadap degradasi kekuatan ikat resin kompositdentin. Metode: Dua puluh empat sampel dentin yang diambil dari mahkota gigi premolar, dibagi menjadi tiga kelompok yang diberikan perlakuan berbeda. Kelompok I diberi perlakuan bahan bonding tanpa klorheksidin, kelompok II diberi perlakuan klorheksidin dan bonding, kelompok III diberi perlakuan bonding mengandung klorheksidin, pada tiap kelompok dibagi menjadi 2 sub-kelompok yaitu kelompok tanpa direndam dan kelompok yang direndam NaOCl 10% selama satu jam, sehingga didapat enam sub-kelompok. Kemudian seluruh kelompok di ukur kekuatan ikat gesernya menggunakan Universal Testing Machine. Satu sampel dari setiap sub-kelompok dilakukan Scanning Electron Microscope (SEM). Data dianalisa statistik dengan uji hipotesis Kruskal Wallis yang dilanjutkan dengan uji Mann-Whitney. Hasil: rerata kekuatan ikat geser sebelum perendaman NaOCl 10% tertinggi kelompok I sedangkan rerata kekuatan ikat geser setelah perendaman NaOCl 10% tertinggi pada kelompok III. Terdapat perbedaan bermakna antara kelompok I terhadap kelompok II dan antara kelompok II terhadap kelompok III. Kesimpulan: Klorheksidin mempunyai efek terhadap pengurangan degradasi kekuatan ikat geser resin komposit-dentin. ......Resilience of composite resin-dentin bonding known as one of success composite resin restoration determinants. The purpose of this study was to analyze the effect of chlorhexidine on reducing the degradation of composite resin-dentin shear bond strength. Methods: Twenty-four premolar crowns were divided into three groups then given different treatments. Group I was treated material bonding without chlorhexidine, group II was treated with chlorhexidine and bonding, group III was treated with chlorhexidine-contained bonding. Each group was divided into two sub-groups: the group without immersion of NaOCl 10% and the group with immersion of NaOCl 10% for one hour, then it were obtained six sub-groups. After twenty-four hours, shear bond strengths measured using Universal Testing Machine. A sample of each group was photographed with Scanning Electron Microscope (SEM). Statistical analysis was done by Kruskal Wallis test, then followed by Mann Whitney test to determine significance between groups. Results: The mean value of shear bond strength before immersion of NaOCl 10% was highest on Group I, while the mean value of shear bond strength after immersion of NaOCl 10% was highest on Group III. There are significant differences between Group I with Group II and between Group II with Group III. Conclusion: Chlorhexidine have an effect on reducing the degradation of shear bond strength of resin-dentin bonding.

Abstrak :
Latar Belakang: Penggunaan adhesif universal sebagai sementasi pasak fiber dalam restorasi pasca endodontik populer digunakan karena sifatnya yang serbaguna sehingga dapat diaplikasikan dengan metode total-etch maupun self-etch. Namun, penelitian mengenai perbedaan push-out bond strength (PBS) antara kedua metode tersebut masih terbatas. Tujuan: Mengetahui perbedaan PBS dan failure mode antara metode total-etch dan self-etch sistem adhesif universal pada sementasi pasak fiber. Metode: Tiga puluh gigi premolar rahang bawah yang baru diekstraksi disimpan di dalam air terdeionisasi yang kemudian dilakukan pemotongan mahkota sebelum dilakukan perawatan saluran akar dan preparasi ruang pasak. Pasak kemudian disementasi dengan semen resin dualcure self-adhesive dan bahan adhesif Prime&Bond Universal (PBU). Uji PBS dilakukan untuk mengukur kekuatan ikat geser masing-masing kelompok uji. Kegagalan ikatan kemudian diobservasi menggunakan Scanning Electron Microscopy (SEM). Hasil: Kelompok self-etch memiliki kekuatan ikat yang lebih tinggi dibandingkan dengan kelompok lainnya dengan perbedaan yang bermakna (p<0.05). Tidak terdapat perbedaan kegagalan adhesif yang signifikan di antara kelompok. Kesimpulan: Metode self-etch memiliki kekuatan ikat paling baik dibandingkan dengan kelompok uji lainnya, namun tidak terdapat perbedaan failure mode pada setiap kelompok. ......Background: Universal adhesives for fiber post cementation in endodontically treated teeth have become popular in clinical dentistry as they can be applied in either total-etch or self-etch mode, due to their reduced number of application steps and versatility. However, studies regarding comparison between the two modes are limited and insufficient. Aim/Objective: The aim of the study is to analyze and compare the pushout bond strength and failure mode of the multimode universal adhesive system. Materials and Methods: Thirty freshly extracted mandibular premolars were decoronated prior to a root canal treatment (RCT) and prepared for post placement and bonded using Prime&Bond Universal (PBU). Post was then cemented using dual-cure self-adhesive resin cement. The push-out bond strength (PBS) test was performed to measure the shear bond strength using a universal testing machine (UTM). Failure mode was then observed using scanning electron microscope (SEM). Results: One-way ANOVA followed by a post-hoc Bonferroni and Independent T-Test indicated that there is significant difference (p<0.05) between the bond strength of the total- and self-etch mode of the universal adhesive system. However, no differences in failure mode are observed between groups. Conclusion: Self-etch mode is more preferable due to its higher bond strength dominated with cohesive failure indicating its success in bonding with the root canal

Abstrak :
[ABSTRAK
Resin komposit merupakan bahan restorasi direk dengan teknik aplikasi yang sangat sensitif. Penelitian ini bertujuan untuk menganalisis efek kontaminansi saliva dan darah setelah etsa terhadap kekuatan ikat geser antara resin komposit dan email. Dua puluh lima spesimen email (n=25) secara acak dibagi dalam lima kelompok berdasarkan bahan kontaminasi dan metode pembersihan kontaminan. Hasil penelitian menunjukkan nilai rerata kekuatan ikat geser tertinggi adalah kelompok kontrol, sedangkan yang terendah adalah kelompok kontaminasi darah dengan etsa ulang. Antara kelompok kontrol dengan kelompok kontaminasi terdapat perbedaan yang signifikan. Sebagai kesimpulan, kontaminasi saliva dan darah menyebabkan penurunan kekuatan ikat geser antara resin komposit dan email;Composite resin is a direct restorative material with highly sensitive application technique. ABSTRACT
This study aimed to analyze the effect of saliva and blood contamination after etching procedure to shear bond strength between composite resin and enamel. Twenty five samples of enamel (n=25) were randomly divided into five group based on contamination agent and decontamination procedures. The result showed the mean value of shear bond strength was highest on control group and the lowest on blood contamination group with re-etching procedure. Between control group and contamination group were significantly different. In conclusion, saliva and blood contamination can decrease shear bond strength between composite resin and enamel, Composite resin is a direct restorative material with highly sensitive application technique. This study aimed to analyze the effect of saliva and blood contamination after etching procedure to shear bond strength between composite resin and enamel. Twenty five samples of enamel (n=25) were randomly divided into five group based on contamination agent and decontamination procedures. The result showed the mean value of shear bond strength was highest on control group and the lowest on blood contamination group with re-etching procedure. Between control group and contamination group were significantly different. In conclusion, saliva and blood contamination can decrease shear bond strength between composite resin and enamel]