Apparatus for evacuation of root canal

Details Apparatus for evacuation of root canal Apparatus for evacuation of root canal

2007-06-05

2007-06-05

Rodriguez, Cris (Department: 3732)

Dentistry

Apparatus

Having intra-oral dispensing means

C433S224000

Reexamination Certificate

active

11152942

ABSTRACT:
In an endodontic procedure, after the working of a root canal by instruments to remove material and shape the walls of the canal, irrigant is supplied via a microcannula. A vacuum is applied via a tube which is inserted partway down the root canal. The tube and microcannula pass through a material created by a standard dental filling material of a composite nature Which provides a seal at a position near the top of the coronal opening. The irrigant is supplied in a manner sufficient to ensure delivery to a side vent of the microcannula. The vacuum at the end of tube draws the irrigant and debris up from the apex of the root canal into the tube. The side vent may have a plurality of more round holes, a diagonal slit or a U shaped slit, or any other shape. The vent opening should not extend more than approximately 0.75 mm from the closed spherical tip of the microcannula, it must be burr free any the opening must be smaller than the internal diameter of the microcannula.

REFERENCES:
patent: 4276880 (1981-07-01), Malmin
patent: 6235008 (2001-05-01), Heinzelman et al.
patent: 2002/0142260 (2002-10-01), Pond
patent: 2004/0043356 (2004-03-01), Schlussel
patent: 2005/0170312 (2005-08-01), Pond
Ingle, John I. and Bakland, Leif I., “Endodontics”, Jun. 2002, pp. 502-503.

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