Periapical tissue healing after post space preparation with or without use of a protection plug and root canal exposure to the oral environment: study in dogs

Brazilian Dental Journal

Roberto Holland²  Luciana Noronha Manne¹  Valdir De Souza²  Sueli Satomi Murata¹  Eloi Dezan Júnior² 

[1] ,São Paulo State University School of Dentistry of Araçatuba Department of Restorative DentistryAraçatuba SP ,Brazil

关键词: coronal leakage;    root canal sealer;    post space preparation;    periapical repair;    root canal therapy;   

DOI  :  10.1590/S0103-64402007000400002

来源: SciELO

【 摘 要 】

The purpose of this study was to evaluate the influence of coronal leakage on the healing of dogs' periapical tissues after root canal filling, post space preparation and protection or not with a temporary sealer plug. Forty root canals of dogs' teeth were instrumented and filled by the lateral condensation technique with gutta-percha points and Endomethasone or CRCS sealers. After post space preparation, the remaining filling material was protected or not with a plug of temporary Coltosol sealer and exposed to the oral environment for 90 days. Thereafter, the animals were sacrificed and the specimens were removed and prepared for histomorphological and histobacteriological analysis. The findings revealed 35% of microbial leakage in the groups without plugs and 15% of leakage in the groups with plugs. Statistical analysis showed that the use of a Coltosol plug improved significantly the histomorphological results regardless of the type of root canal sealer (p=0.05) and that CRCS and Endomethasone sealers showed similar results (p>0.05).

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License