A laboratory study of root canal and isthmus disinfection in extracted teeth using various activation methods with a mixture of sodium hypochlorite and etidronic acid

Author(s):  
N. Villalta‐Briones ◽  
P. Baca ◽  
M. Bravo ◽  
C. Solana ◽  
B. Aguado‐Pérez ◽  
...  
2014 ◽  
Vol 25 (6) ◽  
pp. 489-493 ◽  
Author(s):  
Marta Sáinz-Pardo ◽  
Roberto Estevez ◽  
Óliver Valencia de Pablo ◽  
Giampiero Rossi-Fedele ◽  
Rafael Cisneros

The purpose of this ex vivo study was to determine, in "open" and "closed" systems, whether the design has an influence on the penetration length of sodium hypochlorite mixed with a radiopaque contrast medium, measured in millimeters, when delivered using positive pressure (PP) and using sonic (SI) or passive ultrasonic (PUI) activation. Sixty single-rooted teeth were divided into two groups: open and closed systems (n=30). Root canal shaping was performed to a working length of 17 mm. The samples were divided into three sub-groups (n=10) according to irrigant delivery and activation: PP, and SI or PUI activation. By using radiographs, penetration length was measured, and vapor lock was assessed. For the closed group, the penetration distance means were: PP 15.715 (±0.898) mm, SI 16.299 (±0.738) mm and PUI 16.813 (±0.465) mm, with vapor lock occurring in 53.3% of the specimens. In the open group, penetration to 17 mm occurred in 97.6% of the samples, and no vapor lock occurred. Irrigant penetration and distribution evaluation using open and closed systems provide significantly different results. For closed systems, PUI is the most effective in delivering the irrigant to working length, followed by SI.


Author(s):  
Marcia Carneiro Valera ◽  
Adriana Chung ◽  
Márcia Maciel Menezes ◽  
Carlos Eduardo Fernandes Fernandes ◽  
Cláudio Antonio Talge Carvalho ◽  
...  

2021 ◽  
Vol 6 (4) ◽  
pp. 191-193
Author(s):  
Sunny Sharma ◽  
Sonali ◽  
Asusa ◽  
Chander Udhey ◽  
Puneet Kour ◽  
...  

The most commonly used irrigant in the field of endodontics is sodium hypochlorite in the procedure of root canal therapy. Although the use of sodium hypochlorite is quite safe but on the other hand when it comes in to direct contact with the soft tissue, it can result in soft tissue injury.


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