Evaluation of coronal leakage and pathway of dye leakage after obturation with various materials for open apical foramina.
The aim of this study was to investigate coronal leakage after obturation with mineral trioxide aggregate (MTA), resin-based sealer, and silicon-based sealer for open apical foramina and to evaluate pathway of leakage. Twenty-eight maxillary premolars were used, and instrumented to ISO size #80. Teeth were randomly divided into four groups as follows: Group A filled with MTA, Group B with gutta-percha and resin-based sealer, Group C with polymer-based material and resin-based sealer, and Group D with gutta-percha and silicon-based sealer. All samples were evaluated for coronal leakage with methylene blue solution and spectrophotometry. After leakage testing, samples were cut, and sections were observed. Dye leakage of Group A was significantly lowest among all groups at 15 days and 30 days. Defects which induced coronal leakage in resin-based sealer were observed at 7 mm from the apex. Coronal leakage after obturation with MTA for open apical foramina was significantly lower than resin-based sealer and silicon-based sealer.
Pulp Biology and Endodontics, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
Hitoshi
H
Sakaue
Kei
K
Komatsu
Toshihiko
T
Yoshioka
Hitomi
H
Ishimura
Arata
A
Ebihara
Hideaki
H
Suda
D003763:Dental Leakage; D003804:Dentin / Q000737:chemistry; D006801:Humans; D008751:Methylene Blue; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D013053:Spectrophotometry; D019227:Tooth Apex / Q000601:surgery*
D012387:Root Canal Filling Materials; D008751:Methylene Blue