Title:
歯内治療器具
Document Type and Number:
Japanese Patent JP3731187
Kind Code:
B2
Abstract:
An improved endodontic dental instrument is provided for extirpating and/or obturating a root canal. The instrument has two or more flutes defining tissue removing edges wherein the flutes are formed unequal in size, shape and/or spacing about the periphery of the instrument shaft so as to provide an instrument having a degree of asymmetry. Lands are provided adjacent the tissue removing edges and at least a portion of the lands are recessed from the periphery to reduce frictional loads on the instrument during extirpating and obturating procedures (Fig.1a).
Inventors:
Max Padden, John, Tee.
Application Number:
JP52217997A
Publication Date:
January 05, 2006
Filing Date:
December 11, 1996
Export Citation:
Assignee:
ORMCO CORPORATION
International Classes:
A61C5/02; A61C3/02; A61C5/04; A61C5/42; A61C5/50; A61C1/00
Domestic Patent References:
| JP56068445A | ||||
| JP59115033A | ||||
| JP60129042A | ||||
| JP6016324A | ||||
| JP5816893B2 | ||||
| JP55151958A |
Foreign References:
| DE949002B |
Attorney, Agent or Firm:
Eiji Saegusa
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate
Kenji Saito
Jun Fujii
Hitoshi Seki
Mutsuko Nakano
Shinsuke Otsuki
Suzuki Katsuto
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate
Kenji Saito
Jun Fujii
Hitoshi Seki
Mutsuko Nakano
Shinsuke Otsuki
Suzuki Katsuto