Evaluation of the influence of smear layer on the apical and coronal sealing ability of two sealers.
The aim of this in vitro study was to determine the effect of the smear layer on apical and coronal leakage in root canals obturated with AH26 or RoekoSeal sealers. A total of 160 maxillary anterior teeth extracted for periodontal reasons were used. The root canals were prepared to a size #7 with ProFile.06 taper Series 29 rotary instruments in a crown-down manner. Eight groups were created by all possible combinations of three factors: smear layer (present/absent), leakage assessment (apical/coronal), and sealer used (AH26/RoekoSeal). All teeth were obturated using lateral condensation technique of gutta-percha. A fluid filtration method was used to test apical or coronal leakage. According to the results of this study, the smear (+) groups displayed higher apical and coronal leakage than those smear (-) groups for both root canal sealers (p < 0.05). There was no statistically significant difference in either apical or coronal leakage between RoekoSeal and AH26, regardless of the presence or absence of the smear layer (p > 0.05). However, apical leakage was significantly higher than coronal leakage for both root canal sealers used in this study (p < 0.05). Under the conditions of this study, the results indicate that removal of the smear layer has a positive effect in reducing apical and coronal leakage for both AH26 and RoekoSeal root canal sealers.
Cobankara
Funda Kont
FK
Department of Endodontics, Faculty of Dentistry, Selçuk University, Campus 42075, Konya, Turkey. kfunda@selcuk.edu.tr
Adanr
Necdet
N
Belli
Sema
S
D001729:Bismuth / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003763:Dental Leakage / Q000145:classification*; D003786:Dental Pulp Cavity / Q000648:ultrastructure; D015194:Diffusion Chambers, Culture; D004338:Drug Combinations; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation; D018915:Root Canal Preparation; D012834:Silver / Q000737:chemistry; D016369:Smear Layer; D014025:Titanium / Q000737:chemistry; D019227:Tooth Apex; D019228:Tooth Crown
D003738:Dental Cements; D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C465381:roeko seal; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D014025:Titanium; D001729:Bismuth