TINGKAT KEBERSIHAN TIGA SEGMEN SALURAN AKAR PASCA PREPARASI MENGGUNAKAN INSTRUMEN PUTAR MTWO SINGLE LENGTH, PROTAPER CROWN DOWN, DAN PROTAPER HYBRID

• Main Authors: , Agustinus Ronny Cahyadi, , drg. Tunjung Nugraheni, M.Kes, Sp. KG
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/119019/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=59009
• Institution: Universitas Gadjah Mada

Root canal cleanliness is one of root canal preparation�s goal. Nickel Titanium rotary instrument is beginning to be used widely due to its ability in achieving root canal clenliness better than that of stainless steel manual. The aim of this study was to find out any differences on cleanliness level at coronal third, middle third, and apical third of root canal prepared using nikel titanium (NiTi) rotary instrument Mtwo single length, ProTaper crown down, and ProTaper hybrid. The subjects of the study were twelve post extracted maxillary and mandibular premolars which were cut to leave twelve millimeters long roots and then divided into three groups which consisted of premolars prepared using Mtwo single length (group one), ProTaper crown down (group two), and ProTaper hybrid. All subjects were subsequently sectioned longitudinally to be coated with gold. Root canal cleanliness level were observed using Scanning Electron Microscope (SEM) with 2000 times magnification at three fields of view which were coronal third, middle third, and apical third. Micrograph results were given score which ranged from 1 to 4 based on dentinal tubules uncovered by material resulted from preparation. Kruskal-Wallis test results showed significant differences on cleanliness level between three root canal segments after root canal preparation using MTwo single length rotary, ProTaper crown down, and Protaper hybrid (p<0,05). U Mann- Whitney test between segments in each group indicated that coronal third and middle third had the best cleanliness level and apical third had the poorest cleanliness level, there is no significant difference on cleanliness level between Mtwo single length, ProTaper crown down, and ProTaper hybrid at coronal third and apical third (p>0,05), and middle third segment prepared using ProTaper hybrid had significantly the best root canal cleanliness level compared to those prepared using Mtwo single length and ProTaper crown down. This study concludes that all instruments produce good cleanliness level at coronal and middle third, but can�t produce good cleanliness level at apical third and the best cleanliness level happens at midlle third by ProTaper hybrid.