Push-out bond strength of Resilon/Epiphany self-etch and gutta-percha/AH26 after different irrigation protocols.
OBJECTIVE
The purpose of this study was to compare the bond strength of Resilon/Epiphany self-etch (SE) and gutta-percha/AH26 after different irrigation protocols.


METHODS
Extracted single-rooted human teeth were divided into 4 groups and prepared. According to irrigation protocols, groups were: 5.25% NaOCl followed by 17% ethylenediaminetetraacetic acid (EDTA) (groups 1 and 2); and 1.3% NaOCl followed by MTAD (a mixture of tetracycline isomer, an acid, and a detergent) (groups 3 and 4). The root canals were obturated with either gutta-percha/AH26 (groups 1 and 3) or Resilon/Epiphany SE (groups 2 and 4). Push-out bond strength and failure modes were determined.


RESULTS
Gutta-percha/AH26 showed significantly higher bond strength than Resilon/Epiphany SE. The group with 5.25% NaOCl + EDTA and gutta-percha had a significantly higher bond strength than all of the other groups (P < .05); 1.3% NaOCl + MTAD with gutta-percha showed significantly higher bond strength than 5.25% NaOCl + EDTA with Resilon and 1.3% NaOCl + MTAD with Resilon. There was no significant difference between the bond strengths of the Resilon groups (P > .05). The failure mode for all of the experimental groups was mainly adhesive.


CONCLUSIONS
Irrigation with 5.25% NaOCl + EDTA can be a better conditioner before using gutta-percha/AH26. The bond strength of Resilon/Epiphany SE was not different after irrigation with 5.25% NaOCl + EDTA or 1.3% NaOCl + MTAD.
Shokouhinejad
Noushin
N
Department of Endodontics, School of Dentistry/Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran. shokouhinejad@yahoo.com
Sharifian
Mohammad R
MR
Jafari
Maral
M
Sabeti
Mohammad A
MA
D000268:Adhesiveness; D001729:Bismuth / Q000737:chemistry*; D002614:Chelating Agents / Q000737:chemistry; D019343:Citric Acid / Q000737:chemistry; D001840:Dental Bonding; D003786:Dental Pulp Cavity / Q000648:ultrastructure; D003804:Dentin / Q000648:ultrastructure; D004318:Doxycycline / Q000737:chemistry; D004492:Edetic Acid / Q000737:chemistry; D004853:Epoxy Resins / Q000737:chemistry*; D006171:Gutta-Percha / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D011136:Polysorbates / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry*; D012389:Root Canal Obturation; D018915:Root Canal Preparation / Q000379:methods*; D012834:Silver / Q000737:chemistry*; D012973:Sodium Hypochlorite / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
D002614:Chelating Agents; D004853:Epoxy Resins; C475043:MTAD (intracanal irrigant); D011136:Polysorbates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C486893:epiphany sealer; C486892:resilon sealer; D019343:Citric Acid; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D004492:Edetic Acid; D014025:Titanium; D012973:Sodium Hypochlorite; D004318:Doxycycline; D001729:Bismuth