US749624A - Dental bur - Google Patents

Dental bur Download PDF

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Publication number
US749624A
US749624A US749624DA US749624A US 749624 A US749624 A US 749624A US 749624D A US749624D A US 749624DA US 749624 A US749624 A US 749624A
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bur
cutting
point
non
dental
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00Dental tools or instruments
    • A61C3/02Tooth drilling or cutting instruments; Instruments acting like a sandblast machine

Description

- PATENTED JAN. 12, 1904,

OCULLOUGH.

AL BURR.

FILED DBO. 15, 1902.

L ////////v/% f 2 /J 1 P. B. M

DENT

APPLICATION UNITED STATES Patented January 12, 1904.

PATENT OFFICE.

DENTAL BUR.

SPECIFICATION forming part of Letters Patent No, 749,624, dated January 12, 1904.

Application fil December 15, 1902. Serial No. 135,266. (No model.)

To all whom it may concern.-

Be it known that I, PIERoY B. MoUULLoUeH, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Dental Burs, of which the following is a specification.

The object of my invention is to provide a dentist with an instrument wherewith to cut a bevel upon a natural tooth-root in the mouth after the natural crown has been removed and the face of the root prepared preliminary to making an artificial crown. The instrument is similar to an ordinary dental cone-bur; but is specially constructed to limit the depth of cut and to prevent injury to the gums and to the teeth adjoining the root which is being operated upon.

In the accompanying drawings, Figure 1 is a side view of the conoidal dental bur constructed in accordance with my invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a sectional plan view on the line a; a, Fig. 1. Fig. 4 is a side view of another form of bur embodying my invention. Fig. 5 is a vertical section of the bur shown in Fig. 4. Fig. 6 is a sectional view illustrating another construction of a bur of this class, and Fig. 7 is a view illustrating the use of the instrument.

In beveling the edges of crownless toothroots for the reception of artificial crowns both hand and power actuated instruments have been used; but those heretofore employed have been limited in their application, inaccurate in their operation, and liable to injure the gums and adjoining teeth. In carrying out my invention, therefore, with the view of overcoming these objections I form a oonoidal bur with a cutting portion 1, a blank or non-cutting point 2, anda non-cutting portion 3 at the base of the bur, such non-cutting point consisting, by preference, of a smooth cone and the non-cutting base consisting of a disk, ring, or collar.

In use the bur fixed in the handpiece of a dental engine is held with the cutting-blades touching the edge of the otherwise prepared root, the non-cutting point extending between the root and the gum. The revolving bur is pressed laterally against the root until the edge of said non-cutting point touches the root, the bur being then guided in the same relative position around the root. (See Fig. 7.)

By reason of the cone shape of the bur only the cutting-surface of the same is in contact with the edge of the root when the bur is first applied, and the out is made under pressure until the smooth non-cutting edge of the point of the bur strikes the side of the root, such contact limiting the penetration or depth of cut of the bur.

The bur has a multiplicity of closely-disposed blades, which follow each other so quickly in their action upon the tooth that all jarring or chattering of the bur during its operation is prevented.

The outline of the cutting portion of the bur fixes the angle of the bevel on the root, and the smooth surface of the point 2 protects the gum from laceration, and in order to form a well-defined edgeat the base of the non-cutting point which shall effectively act as a stop to limit the depth of cut the surface of said point has a sharper incline than the cuttingsurface of the bur. The disk 3 at the base of the cone limits the vertical play of the bur, thus fixing the length of the bevel, and said disk 3 acts as a shield and protects from injury teeth adjacent to the root which is being operated upon. (See Fig. 7.)

In the bur shown in Figs. 1, 2, and 3 the grooves 4: between the cutting-blades have concave bottoms; but in the burs shown in Figs. 4, 5, and. 6 V-shaped grooves between the cutting-blades are formed with their hottoms on straight lines, and in these burs also the disk 3 at the base is dispensed with, the free terminal ends of the cutting-blades being rounded, as shown at 5, so as to prevent any cutting action when this portion of the bur comes in contact with the teeth adjoining the root which is being operated upon.

The non-cutting point of the bur shown in Figs. 1 and 2 is an integral part of the bur, and while this construction may also be adopted in burs of the character shown in Figs. 4, 5, and 6 the point in such burs can be conveniently made separate from the cutting portion, as shown in said figures.

The bur shown in Figs. and 5 has at the forward end of the cutting portion a countersunk recess with central projecting stem 6, to which is fitted a double-cone point 2, the inner cone fitting the countersunk recess in the bur, so as to form beveled shoulders 7 where the point closes the grooves between the cutting-blades, said shoulders providing for the easy and rapid clearance of the debris.

In the construction shown in Fig. 6 the stem 6 is dispensed with, and the double-cone point 2 has an inwardly-projecting stem 8, adapted to a central recess in the bur.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. The Within-described instrument for beveling tooth-roots for the reception of artificial crowns, said instrument consisting of a conoidal bur'havinga multiplicity of closely-disposed blades, and a non-cutting point constituting a conical continuation of the cutting portion of the bur and whose edge determines the depth of out of the bur, substantially as specified.

2. A conoidal dental bur having anon-cutting portion at the base of the cone, which noncutting portion extends outwardly beyond the cutting portion of the bur, substantially as specified.

3. A conoidal dental bur having a non-cutting disk which extends outwardly beyond the cutting portion of the bur at the base of the cone, substantially as specified.

4. A conoidal dental bur having anon-cutting point and a non-cutting portion at the base of the cone, which non-cutting portion extends outwardly beyond the cutting portion of the bur, substantially as specified.

5. A conoidal dental bur havinga non-cutting point and a non-cutting disk extending outwardly beyond the cutting portion of the bur at the base of the cone, substantially as specified. i

6. A conoidal dental bur having a non-cutting point forming the apex of the cone and presenting a sharper incline than the cutting surface of the bur, substantially as specified.

7 A conoidal dental bur havinga non-cutting point, and inclined shoulders where said point closes the grooves between the cuttingblades of the bur, substantially as specified.

8. A conoidal dental bur having a non-cutting point, separate from the bur, substantially as specified.

9. A conoidal dental bur having anon-cutting point separate from the bur and forming inclined shoulders where it closes the grooves between the cutting-blades of the bur, substantially as specified.

' 10. A conoidal dentalbur having a countersunk recess in the forward end of its cutting portion, and a non-cutting double-cone point having one of its cones fitted to said recess, substantially as specified.

11. A conoidal dental bur havinga non-cutting point separate from the bur, and fitted to a central projecting stem thereon, substantially as specified.

12. A conoidal dental bur having a countersunk recess and central projecting stem, and a non-cutting double-cone point fitted to said stem and recess, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PIERCY B. MOCULLOUGH.

Witnesses:

F. E. BECHTOLD, J os. H. KLEIN.

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902763A (en) * 1954-02-27 1959-09-08 Hager & Meisinger G M B H Dental finishing tool, especially for interproximal work
US3832779A (en) * 1973-02-09 1974-09-03 M Reynaud Device for milling and taking impression for the placing of peg teeth
US4473354A (en) * 1980-04-25 1984-09-25 Michel Rigaud Process and equipment designed for the standard preparation of teeth before installing a crown
US5190548A (en) * 1991-04-10 1993-03-02 Linvatec Corporation Surgical reamer
US6257889B1 (en) * 1999-03-25 2001-07-10 Temple University - Of The Commonwealth System Of Higher Education Dental bur and method
US20050282108A1 (en) * 2004-03-16 2005-12-22 Goodis Charles J Endodontic files and obturator devices and methods of manufacturing same
US20100132728A1 (en) * 2008-12-01 2010-06-03 Gert Busch Shaping tool
DE202009006792U1 (en) * 2009-05-12 2010-09-23 Joimax Gmbh Spinal cutter
US20110015675A1 (en) * 2009-07-16 2011-01-20 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
US20110208194A1 (en) * 2009-08-20 2011-08-25 Howmedica Osteonics Corp. Flexible acl instrumentation, kit and method
US20110306981A1 (en) * 2009-05-04 2011-12-15 Je-Won Wang Unitary alveolar bone chisel and spreader osteotome for a dental implant
US20140099598A1 (en) * 2011-03-24 2014-04-10 Innobiosurg Bone carving tool for creating convex ridge for inner border of initial hole for placement of implant hole
US8821494B2 (en) 2012-08-03 2014-09-02 Howmedica Osteonics Corp. Surgical instruments and methods of use
US9078740B2 (en) 2013-01-21 2015-07-14 Howmedica Osteonics Corp. Instrumentation and method for positioning and securing a graft
US9402620B2 (en) 2013-03-04 2016-08-02 Howmedica Osteonics Corp. Knotless filamentary fixation devices, assemblies and systems and methods of assembly and use
US9463013B2 (en) 2013-03-13 2016-10-11 Stryker Corporation Adjustable continuous filament structure and method of manufacture and use
US9788826B2 (en) 2013-03-11 2017-10-17 Howmedica Osteonics Corp. Filamentary fixation device and assembly and method of assembly, manufacture and use
US9795398B2 (en) 2011-04-13 2017-10-24 Howmedica Osteonics Corp. Flexible ACL instrumentation, kit and method
US9808242B2 (en) 2012-04-06 2017-11-07 Howmedica Osteonics Corp. Knotless filament anchor for soft tissue repair

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902763A (en) * 1954-02-27 1959-09-08 Hager & Meisinger G M B H Dental finishing tool, especially for interproximal work
US3832779A (en) * 1973-02-09 1974-09-03 M Reynaud Device for milling and taking impression for the placing of peg teeth
US4473354A (en) * 1980-04-25 1984-09-25 Michel Rigaud Process and equipment designed for the standard preparation of teeth before installing a crown
US5190548A (en) * 1991-04-10 1993-03-02 Linvatec Corporation Surgical reamer
US6257889B1 (en) * 1999-03-25 2001-07-10 Temple University - Of The Commonwealth System Of Higher Education Dental bur and method
US20110129793A1 (en) * 2004-03-16 2011-06-02 Goodis Charles J Endodontic Files and Obturator Devices and Methods of Manufacturing Same
US20050282108A1 (en) * 2004-03-16 2005-12-22 Goodis Charles J Endodontic files and obturator devices and methods of manufacturing same
US7967605B2 (en) 2004-03-16 2011-06-28 Guidance Endodontics, Llc Endodontic files and obturator devices and methods of manufacturing same
US20100132728A1 (en) * 2008-12-01 2010-06-03 Gert Busch Shaping tool
US20110306981A1 (en) * 2009-05-04 2011-12-15 Je-Won Wang Unitary alveolar bone chisel and spreader osteotome for a dental implant
EP2428181A4 (en) * 2009-05-04 2015-01-21 Innobiosurg Unitary alveolar bone chisel and spreader osteotome for a dental implant
US9198743B2 (en) * 2009-05-04 2015-12-01 Innobiosurg Corporation Unitary alveolar bone chisel and spreader osteotome for a dental implant
EP2428181A2 (en) * 2009-05-04 2012-03-14 Innobiosurg Unitary alveolar bone chisel and spreader osteotome for a dental implant
US20100292700A1 (en) * 2009-05-12 2010-11-18 Wolfgang Ries Spine cutter
DE202009006792U1 (en) * 2009-05-12 2010-09-23 Joimax Gmbh Spinal cutter
US8449546B2 (en) 2009-05-12 2013-05-28 Joimax Gmbh Spine cutter
US20110015674A1 (en) * 2009-07-16 2011-01-20 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
US20110015675A1 (en) * 2009-07-16 2011-01-20 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
US8439947B2 (en) 2009-07-16 2013-05-14 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
US9545252B2 (en) 2009-07-16 2017-01-17 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
US8911474B2 (en) 2009-07-16 2014-12-16 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
US20110208194A1 (en) * 2009-08-20 2011-08-25 Howmedica Osteonics Corp. Flexible acl instrumentation, kit and method
US9232954B2 (en) 2009-08-20 2016-01-12 Howmedica Osteonics Corp. Flexible ACL instrumentation, kit and method
US9259293B2 (en) * 2011-03-24 2016-02-16 Innobiosurg Bone carving tool for creating convex ridge for inner border of initial hole for placement of implant hole
US20140099598A1 (en) * 2011-03-24 2014-04-10 Innobiosurg Bone carving tool for creating convex ridge for inner border of initial hole for placement of implant hole
US9795398B2 (en) 2011-04-13 2017-10-24 Howmedica Osteonics Corp. Flexible ACL instrumentation, kit and method
US9808242B2 (en) 2012-04-06 2017-11-07 Howmedica Osteonics Corp. Knotless filament anchor for soft tissue repair
US9226744B2 (en) 2012-08-03 2016-01-05 Howmedica Osteonics Corp. Surgical instruments and methods of use
US20140336654A1 (en) 2012-08-03 2014-11-13 Howmedica Osteonics Corp. Surgical instruments and methods of use
US8821494B2 (en) 2012-08-03 2014-09-02 Howmedica Osteonics Corp. Surgical instruments and methods of use
US9078740B2 (en) 2013-01-21 2015-07-14 Howmedica Osteonics Corp. Instrumentation and method for positioning and securing a graft
US9402620B2 (en) 2013-03-04 2016-08-02 Howmedica Osteonics Corp. Knotless filamentary fixation devices, assemblies and systems and methods of assembly and use
US9788826B2 (en) 2013-03-11 2017-10-17 Howmedica Osteonics Corp. Filamentary fixation device and assembly and method of assembly, manufacture and use
US9463013B2 (en) 2013-03-13 2016-10-11 Stryker Corporation Adjustable continuous filament structure and method of manufacture and use

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