title: Evaluation of penetration and adaptation of three different sealers: a SEM study.
abstract: In this study, dentinal penetration and adaptation of three endodontic sealers were evaluated by using scanning electron microscope (SEM). Seventeen recently extracted, human maxillary anterior teeth were used. After the crowns were removed from the cementoenamel junction, the root canals were instrumented. The teeth were then randomly divided into three groups of five roots each and two teeth were used as controls. The smear layer was removed with EDTA and NaOCl. The canals were obturated with AH 26, CRCS, RSA sealers and gutta-percha using lateral condensation technique. Each root was sectioned longitudinally and then prepared for SEM evaluation. The SEM results showed that AH 26 was the best sealer penetrating into dentinal tubules and adapted to dentinal walls when compared with the CRCS and RSA. The CRCS and RSA occluded the orificies of dentinal tubules. The RSA showed that the penetration was less than AH 26 and more than CRCS.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey. ssevimay@dentristry.ankara.edu.tr
authors.forename: S
authors.initials: S
authors.lastname: Sevimay
authors.forename: D
authors.initials: D
authors.lastname: Dalat
mesh_terms: D001729:Bismuth / Q000032:analysis; D002126:Calcium Hydroxide / Q000032:analysis; D003738:Dental Cements / Q000032:analysis; D004338:Drug Combinations; D004853:Epoxy Resins / Q000032:analysis; D006171:Gutta-Percha / Q000032:analysis*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D011897:Random Allocation; D012387:Root Canal Filling Materials / Q000032:analysis* / Q000592:standards; D012388:Root Canal Irrigants / Q000737:chemistry; D012389:Root Canal Obturation / Q000379:methods; D012834:Silver / Q000032:analysis; D016369:Smear Layer; D014025:Titanium / Q000032:analysis; D015034:Zinc Oxide / Q000032:analysis
chemical_list: D003738:Dental Cements; D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C465381:roeko seal; C075563:Calcibiotic Root Canal Sealer; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D014025:Titanium; D002126:Calcium Hydroxide; D015034:Zinc Oxide; D001729:Bismuth