Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
  • A61C5/42—Files for root canals; Handgrips or guiding means therefor
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C2201/00—Material properties
  • A61C2201/002—Material properties using colour effect, e.g. for identification purposes

Definitions

• the invention relates to a tooth root canal instrument with a head part and an adjoining instrument part.
• Tooth root canal instruments of this type are known and are used in particular for the preparation of tooth root canals.
• the instrument part is preferably designed as a cutting instrument with which tooth root canals can be cleared out.
• Tooth root canal instruments of the type described above are subject to high wear, so that they generally have a short lifespan.
• the object underlying the invention is therefore to create a tooth root canal instrument with a longer service life.
• This object is achieved according to the invention in that the instrument part is coated with a wear-resistant material over at least part of its length.
• a tooth root canal treatment instrument usually comprises a head part, with which the instrument can be attached to a manually guided drive part, and an adjoining instrument part, which is provided with one or more cutting edges for clearing out tooth root canals.
• the instrument part is coated with a wear-resistant material over at least part of its length, the layer thickness preferably being in the range from 0.1 to 5 ⁇ m.
• the wear-resistant material should be physiologically safe and sterilizable and therefore temperature-resistant up to 200 ° C. It should not show any negative reactions with the usual disinfectants.
• the wear-resistant material should also be chosen so that the flexibility and the elasticity of the instrument part are not impaired. Also, the mechanical properties of the base material from which the instrument part is made should not be negatively influenced by the wear-resistant material.
• the material of the coating should be selected and the coating should be applied in such a way that the coating does not tear or flake off during use, for example by bending the instrument part.
• the wear-resistant material is harder than the base material from which the instrument part is made, and makes the cutting edges of the instrument part more resistant to wear when machining tooth root canals, which extends the service life of the instrument and thus extends its service life.
• the base material can be stainless steel, a nickel-titanium alloy or a special alloy that has correspondingly good properties for use as a root canal instrument.
• the wear-resistant material which should be harder than the base material, is in particular carbon or a carbon compound, titanium or titanium nitrite or their compounds, silicone or a silicone compound, titanium aluminum nitrite or one of its compounds, silicon or one of its compounds, amorphous boron carbide (ABC layer ) or chrome or one of its compounds.
• the coating preferably has a specific color, through which the coated instrument stands out from other instruments with a coating in a different color or without a coating, the coloring of the coating serving to distinguish an instrument from similar instruments with different properties.
• the color thus serves to identify instruments with the same properties, which is particularly advantageous for tooth root canal instruments, since due to the small size of the instruments, other labeling options are only available to a very limited extent.
• the color of the coating has the Another advantage is that when the coating in the area of the instrument part, in particular the cutting edges, has been processed, the user recognizes that the instrument must be replaced.
• a colored coating can also be used to distinguish entire groups of instruments from others.

Landscapes

• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Neurology (AREA)
• Neurosurgery (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Surgery (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7870104

Family Applications (1)

Country Status (5)

Families Citing this family (9)

Family Cites Families (5)

• 1998
  • 1998-06-05 DE DE19825299A patent/DE19825299C1/de not_active Revoked
• 1999
  • 1999-05-31 JP JP2000552978A patent/JP2002517274A/ja active Pending
  • 1999-05-31 WO PCT/EP1999/003773 patent/WO1999063902A1/de not_active Application Discontinuation
  • 1999-05-31 EP EP99927816A patent/EP1001713A1/de not_active Withdrawn
• 2000
  • 2000-02-04 US US09/497,759 patent/US6234796B1/en not_active Expired - Lifetime

Non-Patent Citations (1)

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