obturation उदाहरण वाक्य
उदाहरण वाक्य
- One such characteristic is the type of obturation used to seal the chamber and prevent gases escaping through the breech.
- Exposure of the obturation material to the oral environment may mean the gutta-percha is contaminated with oral bacteria.
- When a cartridge is fired, the internal pressure expands the case to fit the chamber in a process called obturation.
- To allow obturation in airguns, pellets use soft alloys in conjunction with a thin, concave base designed to expand more easily.
- This required the obturation to be provided by the breech rather than the cartridge case, as is the case in fixed rounds.
- A degree of obturation was achieved via a cup on the face of the block being forced into a recessed ring on the chamber face.
- The 3D scrubbing effect of the file, combined with the fresh irrigant, result in clean canals, which in turn facilitate better obturation.
- Fracturing may be caused by excessive forces placed on the tooth, such as during compaction of gutta-percha during the obturation phase of endodontics.
- Finally the de Bange system introduced in 1877 solved the obturation problem with an asbestos pad impregnated with grease which expanded and sealed the breech on firing.
- Britain adopted the de Bange breech when it returned to breechloaders in the early 1880s after some initial experiments with the inferior " Armstrong cup " obturation system.