GB1498889A - Dental burs - Google Patents
Dental bursInfo
- Publication number
- GB1498889A GB1498889A GB36367/75A GB3636775A GB1498889A GB 1498889 A GB1498889 A GB 1498889A GB 36367/75 A GB36367/75 A GB 36367/75A GB 3636775 A GB3636775 A GB 3636775A GB 1498889 A GB1498889 A GB 1498889A
- Authority
- GB
- United Kingdom
- Prior art keywords
- burr
- groove
- edge
- head
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
Abstract
1498889 Dental burr DENTSPLY INTERNATIONAL INC 3 Sept 1975 [11 Sept 1974] 36367/75 Heading A5R [Also in Division B3] A dental burr 20 comprises a head, fixed to one end of a shank, and having longitudinally extending teeth 28 each with a sharp cutting edge 26, a flat cutting face 24, a relief surface 30 and a groove 22 to receive chips removed from a patients tooth in which the burr operates. The groove 22 is defined along one side by the cutting face 24 which also defines one side of the cutting edge 26 and extends from the edge radially towards the axis of the head, the opposite surface of each edge 26 being defined by the relief surface 30 which is convex in cross section and merges with an adjacent side surface 32 of groove 22 along a rounded ridge 34 substantially midway between successive edges 26. The helix angle of the teeth with respect to the burr axis is 10-30, preferably 12. The root surface of each groove extends radially a distance e ranging between 40% and 60% of the radial length f of the face 24, the dimension f being 20% to 30% of the radius g of the burr cutting head.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50517874A | 1974-09-11 | 1974-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1498889A true GB1498889A (en) | 1978-01-25 |
Family
ID=24009336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36367/75A Expired GB1498889A (en) | 1974-09-11 | 1975-09-03 | Dental burs |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS5419117B2 (en) |
| AR (1) | AR205754A1 (en) |
| AT (1) | AT357665B (en) |
| BR (1) | BR7505791A (en) |
| CA (1) | CA1049301A (en) |
| CH (1) | CH600864A5 (en) |
| DE (1) | DE2539881A1 (en) |
| FR (1) | FR2284309A1 (en) |
| GB (1) | GB1498889A (en) |
| IT (1) | IT1042443B (en) |
| SE (1) | SE415141B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070424A1 (en) * | 2007-11-27 | 2009-06-04 | Tdy Industries, Inc. | Rotary burr comprising cemented carbide |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5917341A (en) * | 1982-07-15 | 1984-01-28 | 株式会社松谷製作所 | Production of h files |
| JPH0724086Y2 (en) * | 1989-05-01 | 1995-06-05 | 株式会社町田製作所 | Channel tube for endoscope |
| US7537561B2 (en) | 2002-11-27 | 2009-05-26 | Olympus Corporation | Endoscope apparatus |
-
1975
- 1975-01-01 AR AR260340A patent/AR205754A1/en active
- 1975-09-03 GB GB36367/75A patent/GB1498889A/en not_active Expired
- 1975-09-08 CH CH1163275A patent/CH600864A5/xx not_active IP Right Cessation
- 1975-09-08 DE DE19752539881 patent/DE2539881A1/en not_active Ceased
- 1975-09-09 AT AT694575A patent/AT357665B/en not_active IP Right Cessation
- 1975-09-09 BR BR7505791A patent/BR7505791A/en unknown
- 1975-09-10 FR FR7527797A patent/FR2284309A1/en active Granted
- 1975-09-10 SE SE7510077A patent/SE415141B/en unknown
- 1975-09-10 CA CA235,142A patent/CA1049301A/en not_active Expired
- 1975-09-10 IT IT27110/75A patent/IT1042443B/en active
- 1975-09-11 JP JP11044175A patent/JPS5419117B2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009070424A1 (en) * | 2007-11-27 | 2009-06-04 | Tdy Industries, Inc. | Rotary burr comprising cemented carbide |
| AU2008329940B2 (en) * | 2007-11-27 | 2014-10-30 | TDY Industries, LLC | Rotary burr comprising cemented carbide |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2284309A1 (en) | 1976-04-09 |
| SE7510077L (en) | 1976-03-12 |
| SE415141B (en) | 1980-09-15 |
| AU8476075A (en) | 1977-03-17 |
| JPS5153789A (en) | 1976-05-12 |
| IT1042443B (en) | 1980-01-30 |
| JPS5419117B2 (en) | 1979-07-12 |
| ATA694575A (en) | 1979-12-15 |
| CA1049301A (en) | 1979-02-27 |
| DE2539881A1 (en) | 1976-04-01 |
| FR2284309B1 (en) | 1982-06-18 |
| AR205754A1 (en) | 1976-05-31 |
| AT357665B (en) | 1980-07-25 |
| BR7505791A (en) | 1976-08-31 |
| CH600864A5 (en) | 1978-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |