Figure 1.

Details of the endodontic sealers used in the study

Sealers	Composition	Manufacturer
AH Plus	Paste A: Bisphenol-A epoxy resin, Bisphenol-F epoxy resin, calcium tungstate, zirconium oxide, silica and iron oxide pigments. Paste B: Dibenzydiamine, aminoadamante, trycyclodecane- diamine, calcium tungstate, zirconium oxide, silica and silicone oil.	Dentsply, DeTrey, Konstanz, Germany
Polifil	Paste based on trifunctional polyol, synthetic from Ricinus communis (castor oil) combined to zinc oxide and calcium carbonate. Liquid: ampoule with synthesized pre-polymer from diphenylmethane diisocyanate with free 20% isocyanate.	Experimental-Polifil,Poliquil Araraquara Polímeros Químicos Ltda, Araraquara, Brazil
Apexit Plus	Calcium hydroxide, calcium oxide, hydrated collophonium, disalicylate, bismuth hydroxide, bismuth carbonate, silicon dioxide, phosphoric acid alkyl ester.	Ivoclar/Vivadent,Fürstentum, Liechtenstein
Sealapex	Calcium hydroxide, barium sulfate, zinc oxide, titanium dioxide and zinc stearate.	SybronEndo, Glendora, CA, USA
Endométhasone	Zinc oxide, dexamethasone, hydrocortisone acetate, diode thymol, paraformaldehyde, lead oxide, barium sufate, magnesium stearate, bismuth subnitrate. Eugenol.	Spécialities Septodont, Saint-Maurdes-Fósses, France
Endofill	Zinc oxide, hydrogenated resin, bismuth subcarbonate, barium sulfate, sodium borate. Eugenol and oil of sweet almonds	Dentsply, Petrópolis Ind. e Com. Ltda, Rio de Janeiro, Brazil