title: Resistance to fracture of roots filled with different sealers.
abstract: The aim of this study was to compare the fracture resistance of roots filled with gutta percha (GP) and different root canal sealers.Fifty-five human maxillary central incisors were selected and randomly divided into three experimental groups (Groups 1-3) and two control groups (Groups 4 and 5). They were Group 1-15 root canals filled with an epoxy resin-based sealer (AH Plus) and GP, Group 2 -15 root canals filled with a calcium silicate-based sealer (iRoot SP) and GP, Group 3: 15 root canals filled with another calcium silicate-based sealer (MTA Fillapex) and GP, Group 4: five roots were instrumented but not filled, and Group 5: five roots were neither instrumented nor filled. Compressive loading was carried out using a universal testing machine until fracture occurred. Force applied at time of fracture was recorded as fracture strength of specimen in Newtons. There were no significant differences in fracture strength among the three experimental groups (p>0.05), whose results were significantly superior to that of Group 4 (p<0.05). In conclusion, all the root canal sealers used in the present study increased the fracture resistance of instrumented root canals.
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Burak
authors.initials: B
authors.lastname: Sağsen
authors.forename: Yakup
authors.initials: Y
authors.lastname: Ustün
authors.forename: Kanşad
authors.initials: K
authors.lastname: Pala
authors.forename: Sezer
authors.initials: S
authors.lastname: Demırbuğa
mesh_terms: D017607:Aluminum Compounds; D017610:Calcium Compounds; D019245:Compressive Strength; D003799:Dental Stress Analysis; D004338:Drug Combinations; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D010087:Oxides; D012387:Root Canal Filling Materials / Q000737:chemistry; D012390:Root Canal Therapy / Q000379:methods*; D017640:Silicates; D014082:Tooth Fractures / Q000517:prevention & control*
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D006171:Gutta-Percha; C031293:calcium silicate