title: Push-out Bond Strength of Root-end Filling Materials.
abstract: The aim of this study was to evaluate the bond strength of root-end filling materials. Forty 2-mm-thick slices were obtained from human single-rooted teeth. After root canal preparation using a 1.5 mm diameter cylindrical drill, the dentinal walls were prepared by diamond ultrasonic tip (CVD T0F-2). The specimens were divided according the material (n=10): MTA Angelus (MTAA), MTA Sealer (MTAS, experimental), Sealer 26 (S26) and zinc oxide and eugenol cement (ZOE). The push-out test was performed in a mechanical test machine (EMIC DL 2000) at 1 mm/min speed. The failure type was evaluated by stereomicroscopy. The results were subjected to ANOVA and Tukey test, at 5% significance level. MTAA (19.18 MPa), MTAS (19.13 MPa) and S26 (15.91 MPa) showed higher bond strength (p<0.05). ZOE (9.50 MPa) showed the least bond strength values (p<0.05). Adhesive failure was prevalent in all groups, except for ZOE, which showed mixed failures. It was concluded that root-end filling materials MTA Angelus, MTA Sealer and Sealer 26 showed higher bond strength to dentinal walls than zinc oxide and eugenol cement after retrograde preparation.
authors.affiliation: Department of Dentistry, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil, Universidade de São Paulo, Department of Dentistry, Bauru Dental School, Universidade de São Paulo, Bauru SP , Brazil.
authors.forename: Rodrigo Ricci
authors.initials: RR
authors.lastname: Vivan
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil, Universidade Estadual Paulista, Department of Restorative Dentistry, Araraquara Dental School, Universidade Estadual Paulista, Araraquara SP , Brazil.
authors.forename: Juliane Maria
authors.initials: JM
authors.lastname: Guerreiro-Tanomaru
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil, Universidade Estadual Paulista, Department of Restorative Dentistry, Araraquara Dental School, Universidade Estadual Paulista, Araraquara SP , Brazil.
authors.forename: Roberta
authors.initials: R
authors.lastname: Bosso-Martelo
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil, Universidade Estadual Paulista, Department of Restorative Dentistry, Araraquara Dental School, Universidade Estadual Paulista, Araraquara SP , Brazil.
authors.forename: Bernardo Cesar
authors.initials: BC
authors.lastname: Costa
authors.affiliation: Department of Dentistry, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil, Universidade de São Paulo, Department of Dentistry, Bauru Dental School, Universidade de São Paulo, Bauru SP , Brazil.
authors.forename: Marco Antonio Hungaro
authors.initials: MA
authors.lastname: Duarte
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil, Universidade Estadual Paulista, Department of Restorative Dentistry, Araraquara Dental School, Universidade Estadual Paulista, Araraquara SP , Brazil.
authors.forename: Mário
authors.initials: M
authors.lastname: Tanomaru-Filho
mesh_terms: D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D018915:Root Canal Preparation
chemical_list: D012387:Root Canal Filling Materials