Penilaiankebersihansepertigaapikaldindingsaluranakardarismearlayer dengan menggunakan rotary instrument dengan disain convex triangular dan rectangular cross section (Hygiene assessment on apical third of root canal wall of smear layer using rotary instrument design convex triangular and rectangular cross section)

• Main Authors: Nurni Amda, Juni Jekti N, Aries Chandra Trilaksana, Christine Anastasia Rovani, Nurhayaty Natsir, Indrya Kirana Mattulada
• Format: Article
• Language: English
• Published: Hasanuddin University 2015-02-01
• Series: Journal of Dentomaxillofacial Science
• Subjects: hygiene of apical third of root canal wall, smear layer, rectangular cross section rotary instrument, convex triangular cross section rotary instrument
• Online Access: http://jdmfs.org/index.php/jdmfs/article/view/429
• ISSN: 2503-0817; 2503-0825

This study aim to compare the smear layer clearance on the apical third of the root canal walls instrumented with convex triangular cross- section designed hand instruments, rectangular cross-section and convex triangular crosssection designed rotary instruments. Mandibular premolars that met the inclusion criteria were divided into 3 groups of 10 samples, and prepared using convex triangular cross section design hand instruments, convex triangular crosssection and rectangular cross-section design rotary instruments. After preparation and drainage, the sample was cut into halves using a stainless steel chisel, a section was randomly selected and examined using SEM with 1000 X. This study showed that the smear layer clearance of hand instrument group was the lowest compared to other two groups, the rotary instruments with rectangular cross-section design showed the highest percentage smear layer clearance among the three groups. It was concluded that root canal preparation using a rotary instrument design convex triangular cross section produces hygiene apical third of the canal walls of the smear layer significantly compared to manual instruments designed convex triangular cross section and root canal preparation with a rotary instrument design of rectangular cross section produces hygiene apical third of the wall root canal of the smear layer significantly compared convex design of triangular cross section.