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Patent Searching and Data


Title:
ENDODONTIC INSTRUMENT WITH NARROW RADIAL LANDS
Document Type and Number:
WIPO Patent Application WO/2015/009814
Kind Code:
A4
Abstract:
An improved endodontic instrument that has a uniform tapered working length portion (24) with at least two helical shaped flutes (11) and spiraled lands (17) having a land width no greater than 0.101 mm as measured in a plane perpendicular the central axis of rotation (19) of the instrument. The land width is preferably constant along the working length portion (24) but may vary provided it does not exceed 0.101 mm. The instrument resists mid-root transportation and exhibits superior fatigue performance and cutting efficiency compared to prior art instruments..

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Inventors:
JAUNBERZINS, Andris (3020 Princeton Road, Brookfield, WI, 53005-3854, US)
Application Number:
US2014/046832
Publication Date:
March 19, 2015
Filing Date:
July 16, 2014
Export Citation:
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Assignee:
JAUNBERZINS, Andris (3020 Princeton Road, Brookfield, WI, 53005-3854, US)
International Classes:
A61C5/02
Attorney, Agent or Firm:
ROSSLER, Paul (Gablegotwals, 100 West 5th Street 10th Floo, Tulsa OK, 74103-4990, US)
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Claims:
AMENDED CLAIMS

received by the International Bureau on 12 January 2015

WHAT is CLAIMED

1. An endodontic instrument comprising:

a longitudinal body (10) having a uniform tapered working length portion (24) extending between a shaft end (13) and a tip end (IS) of said longitudinal body (10) and including at least two helical shaped flutes (11) with spiraled lands (17) providing a lateral cutting or scraping edge between said flutes adapted for cleaning and shaping a root canal, the flutes having a same hand orientation as an intended direction of rotation of the endodontic file about a central rotational axis of the endodontic file; said spiraled lands (17) having a land width no greater than 0.101 mm as measured in a plane perpendicular a central axis of rotation (19) of said longitudinal body.

2. An endodontic instrument according to Claim 1 wherein the land width of said spiraled lands is a constant land width between said tip and shaft ends.

3. An endodontic instrument according to Claim 1 wherein the endodontic instrument is a size 8 (0.08 mm) endodontic instrument.

4. An endodontic instrument according to Claim 1 wherein the endodontic instrument is in a range of a size 10 (0.10 mm) to a size 60 (0.60 mm) endodontic instrument

5. An endodontic instrument according to Claim 1 wherein the endodontic instrument is a size 70 (0.70 mm) endodontic instrument.

6. An endodontic instrument according to Claim 1 further comprising the uniform tapered working length portion tapers in a range of +0.02 and +0.08 mm mm from said tip end to said shaft end.

7. An endodontic instrument according to Claim 1 further comprising the flutes starting at the end tip of the working portion and running the entirety of the length of the working portion.