title: Comparison of root canal filling quality by mineral trioxide aggregate and gutta percha cones/AH plus sealer.
abstract: The aims of this study were to evaluate the quality of canal filling using mineral trioxide aggregate (MTA) and gutta-percha (GP) in root canals, and to investigate the differences in the percentage of voids between mesial and distal canals by using microcomputed tomography. Twenty-two extracted human mandibular molars were instrumented using rotary files. Two teeth without canal fillings served as negative controls, and the other teeth were obturated with either ProRoot(®) MTA or gutta-percha and AH Plus(®) sealer. Obturated teeth were scanned with microcomputed tomography, and the percentage of voids (V%) was calculated. These specimens were also examined under a scanning electron microscope. The MTA group showed a significantly higher V% than the GP groups (p<0.05). The mesial canal groups showed significantly higher V% than did the distal canal groups (p<0.05). In orthograde filling, MTA exhibited significantly lower filling quality than did GP.
authors.affiliation: Department of Conservative Dentistry, College of Dentistry, Gangnam Severance Hospital, Yonsei University.
authors.forename: Wonkyung
authors.initials: W
authors.lastname: Jho
authors.forename: Jeong-Won
authors.initials: JW
authors.lastname: Park
authors.forename: Euiseong
authors.initials: E
authors.lastname: Kim
authors.forename: Minju
authors.initials: M
authors.lastname: Song
authors.forename: Deok-Gyu
authors.initials: DG
authors.lastname: Seo
authors.forename: Dong-Kyu
authors.initials: DK
authors.lastname: Yang
authors.forename: Su-Jung
authors.initials: SJ
authors.lastname: Shin
mesh_terms: D003786:Dental Pulp Cavity; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D018915:Root Canal Preparation; D055114:X-Ray Microtomography
chemical_list: D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D006171:Gutta-Percha