The sealing ability of resilon and gutta-parcha following different smear layer removal methods: an ex vivo study.
OBJECTIVE
The objective of this study was to compare the ex-vivo sealing ability of Resilon/new Epiphany (SE) sealer to that of gutta-percha/AH-Plus following smear layer removal with EDTA or MTAD.


METHODS
One hundred extracted single-rooted human teeth were divided into 4 experimental groups and 2 positive and negative control groups. EDTA was used in groups 1 and 2. In groups 3 and 4 MTAD was used. The root canals were then obturated with gutta-percha/AH-Plus in groups 1 and 3 and Resilon/Epiphany (SE) in groups 2 and 4. After sterilization, the samples were coronally exposed to human saliva and monitored every 24 hours for 60 days.


RESULTS
In groups 1, 2, 3, and 4, 45%, 65%, 90%, and 65% of specimens leaked within 60 days, respectively. There were statistically significant differences between group 1 and 3 (P < .05).


CONCLUSIONS
Resilon/Epiphany (SE) system is as effective as gutta-percha/AH-Plus in preventing saliva leakage. MTAD did not adversely affect the sealing ability of Resilon/Epiphany (SE).
Shokouhinejad
Noushin
N
Department of Endodontics, School of Dentistry/Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran; Researcher, Iranian Center for Endodontic Research, Tehran, Iran.
Sharifian
Mohammad R
MR
Aligholi
Marziyeh
M
Assadian
Hadi
H
Tabor
Rachel K
RK
Nekoofar
Mohammad H
MH
D002614:Chelating Agents / Q000737:chemistry; D019343:Citric Acid / Q000737:chemistry; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification; 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; D012463:Saliva / Q000737:chemistry; D016369:Smear Layer; D013997:Time Factors
D002614:Chelating Agents; D004853:Epoxy Resins; C475043:MTAD (intracanal irrigant); D011136:Polysorbates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; D019343:Citric Acid; D006171:Gutta-Percha; D004492:Edetic Acid; D004318:Doxycycline