Periapical microleakage of root canals filled with four kinds of sealers using two obturation techniques
- VernacularTitle:四种根管封闭剂的根尖封闭性研究
- Author:
Yan WEI
;
Hong YAN
;
Qi MA
- Publication Type:Journal Article
- Keywords:
Root canal obturation;
Root canal filling materials;
Tooth apex
- From:
Journal of Peking University(Health Sciences)
2004;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the periapical microleakage of the root canals filled with four kinds of sealers using two obturation techniques. Methods: Sixty-four extracted first maxillary premolars were randomly divided into four groups. All the root canals were prepared with Protaper rotary instruments and filled with two obturation techniques: warm vertical condensation and cold lateral condensation. Four kinds of sealers included: Cortisomol, nano-zinc oxide, Apexit and calcium hydroxide which were indivi-dually used for four groups. After the teeth were dyed for 7days with Indian ink, dyeing lines were measured with digital camera under steromicroscope to reflect the microleakage. Results: In cold lateral condensation groups, dyeing lines of calcium hydroxide group had an average length of (1.75?0.22) mm, which was significantly longer than that of Cortisomol group (1.40?0.15 mm) and nano-zinc oxide group [(1.56?0.25) mm, P0.05], which were significantly shorter than that of cold lateral condensation groups (P
