title: An ex vivo comparison of the push-out bond strength of a new endodontic filling system (Smartseal) and various gutta-percha filling techniques.
abstract: The purpose of this study was to evaluate, ex vivo, the push-out bond strength of a new filling material (Smartseal) compared with gutta-percha/AH-26. A total of 40 extracted single-rooted human teeth were used. After instrumentation using the ProTaper rotary system, the root canals were filled as follows: Group 1, Smartseal sealer and a 0.06 taper Smartpoint calibrated to apical tip size 30; Group 2, Smartseal sealer and an F3 SmartpointPT; Group 3, AH-26 sealer and a single F3 ProTaper gutta-percha cone and Group 4, AH-26 sealer and gutta-percha using the cold lateral condensation technique. Two successive disk shaped slices were cut from each root sample and the bond strength was measured using the push-out test. Two-way analysis of variance was used for data analysis with the level of significance set at 0.05. Statistical analysis revealed no significant differences (p > 0.05) between the mean bond strengths of the various groups; thus indicating there was no difference in adhesion to dentine between the Smartseal system and gutta-percha/AH-26 applied using either the single cone or lateral condensation technique.
authors.affiliation: Department of Endodontology, School of Dentistry, Aristotle University, University Campus, Thessaloniki, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Economides
authors.forename: Christos
authors.initials: C
authors.lastname: Gogos
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Kodonas
authors.forename: Charilaos
authors.initials: C
authors.lastname: Beltes
authors.forename: Ioannis
authors.initials: I
authors.lastname: Kolokouris
mesh_terms: D001729:Bismuth / Q000737:chemistry; D001840:Dental Bonding; D003786:Dental Pulp Cavity / Q000473:pathology; D004492:Edetic Acid / Q000627:therapeutic use; D004853:Epoxy Resins / Q000737:chemistry*; D006171:Gutta-Percha / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000295:instrumentation / Q000379:methods; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012834:Silver / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013314:Stress, Mechanical; D014025:Titanium / Q000737:chemistry
chemical_list: D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D004492:Edetic Acid; D014025:Titanium; D012973:Sodium Hypochlorite; D001729:Bismuth