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Aries C. Trilaksana
Department of Conservative Dentistry, Faculty of Dentistry, Hasanuddin University Makassar, Indonesia
Dentistry

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Effectivity of convex triangular and rectangular cross section instruments on decreasing the amount of root canal enterococcus faecalis bacteria colonies Meilina Goenawan; Juni J. Nugroho; Christine R. Anastasia; Aries C. Trilaksana; Nurhayaty Natsir; Andi Sumidarti
Journal of Dentomaxillofacial Science Vol. 1 No. 2 (2016): (Available online: 1 August 2016)
Publisher : DiscoverSys Inc.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15562/jdmfs.v1i2.9

Abstract

This study aims to evaluate effectiveness difference between convex triangular and rectangular cross section rotary  instruments on root canal Enterococcus faecalis bacteria colonies. Samples mandibular premolar teeth with one narrow and straight root canal divided into 3 groups : instrumented with convex triangular cross section rotary instruments, rectangular cross section rotary instruments, and convex triangular cross section manual  instruments. Each group consisted of 9 samples. Standardized teeth length, instrumented to #15 K-file  and sterilized. E. faecalis suspension in BHIB was standardized then 27 root canals contaminated. Root canals were incubated for 21 days. Every 48 hours root canals added with BHIB. Initial samples were collected, plated in agar culture medium and incubated for bacterial count. and then bacterial count was performed again. Data were collected and analysed using Paired T-test and ANOVAThe results showed there are significant  difference on Enterococcus faecalis bacteria colonies amount before and after preparation with all instruments that was used and bacterial reduction amount in root canals were greater on convex triangular cross section instruments than on rectangular cross section instruments even there was no significant difference.
Antioxidant effectivity to decrease coronal microleakage of composite resin restoration after intra-coronal bleaching Yusri Yusri; Aries C. Trilaksana; Chiristine A. Rovani
Journal of Dentomaxillofacial Science Vol. 1 No. 3 (2016): (Available online: 1 December 2016)
Publisher : DiscoverSys Inc.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15562/jdmfs.v1i3.309

Abstract

This study aimed to compare the ability of the three antioxidant ingredients and a minimal application to decrease microleakage of composite resin restoration after intracoronal bleaching. Fifty maxillary first incisor that met the inclusion criteria were prepared endodontic treatment. They are divided into 10 groups: control group (no antioxidant), sodium ascorbate 10%, catalase 10% and sodium ascorbate 10% with Tween 80 0.2% and an application period of 1 hour, 24 hours and 48 hours. Applied hydrogen peroxide 35% for 5 days. Samples were restored with composite resin and coated with nail polish, placed China ink for 24 hours. Coronal microleakage was assessed using a stereomicroscope, which showed presented a significant different (ρ<0.05) in 48 hours. It was concluded that sodium ascorbate 10% with Tween 80 0.2% had a significant effect in decreasing coronal microleakage in 48 hours.
Co-Authors Andi Sumidarti Chiristine A. Rovani Christine R. Anastasia Juni J. Nugroho Meilina Goenawan Nurhayaty Natsir Yusri Yusri