US3928915A - Tooth anchoring means and method - Google Patents

Tooth anchoring means and method Download PDF

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Publication number
US3928915A
US3928915A US240003A US24000372A US3928915A US 3928915 A US3928915 A US 3928915A US 240003 A US240003 A US 240003A US 24000372 A US24000372 A US 24000372A US 3928915 A US3928915 A US 3928915A
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US
United States
Prior art keywords
pin
tooth
cement
pins
hole
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Expired - Lifetime
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US240003A
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English (en)
Inventor
Irving A Ellman
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Individual
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Individual
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Priority to US240003A priority Critical patent/US3928915A/en
Priority to JP48034711A priority patent/JPS5226075B2/ja
Priority to DE2316126A priority patent/DE2316126A1/de
Priority to GB1530273A priority patent/GB1422692A/en
Application granted granted Critical
Publication of US3928915A publication Critical patent/US3928915A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B27/00—Bolts, screws, or nuts formed in integral series but easily separable, particularly for use in automatic machines
    • 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
    • A61C5/30—Securing inlays, onlays or crowns
    • A61C5/35—Pins; Mounting tools or dispensers therefor

Definitions

  • This invention relates to means and methods for building superstructure on a tooth, and in particular to means and methods for anchoring pins in a tooth.
  • Various techniques have been described in the prior art for building superstructure or restorations onto a tooth.
  • One known method is to drill several small holes in the tooth, anchor in each hole a small pin, and then anchor the superstructure to the pins.
  • Such pins have been anchored to the tooth in various ways.
  • the pin has a slightly smaller diameter than the hole, and a zinc phosphate (acidic) type cement is used to hold the pin in place.
  • the pin has about the same or slightly smaller diameter as that of the hole and is force-fitted or friction-locked into the hole to hold the pin in place.
  • an oversized pin with threaded end is used which is self-threaded into the tooth hole.
  • the undersized pin cemented in place uses a cement formed by mixing a liquid with a powder.
  • Such cements have an excessively long setting time, poor adhesion strength, can only be applied as a thick layer, which is not always satisfactory, and have a low PH and can be irritating to the patient.
  • a varnish is added to the hole to reduce leakage and protect the pulp, and the varnish further reduces the adhesion strength of the cement.
  • Other cements suggested, such as zinc oxide or calcium hydroxide have similar disadvantages and especially even poorer adhesion strength.
  • the force-fitted or screwed pins are more difficult to mount in the tooth, and can cause excessive strains and even cracking of the tooth if the dentine drys and contracts, which can happen especially with non-vital teeth.
  • the chief object of the invention is an improved method for anchoring a pin in a tooth hole.
  • a further object of the invention is an improved pin construction capable of good tooth retention and capable of easier and faster installation by the dentist.
  • a cyanoacrylate as a cementing medium for retaining and sealing a dental pin in a tooth.
  • a cyanoacrylate cement is used in combination with a threaded, ringed, or knurled pin.
  • the pin has a non-circular cross-section to increase its retention in the hole.
  • the pin is supplied in a long strip form comprising at least four discrete pins, each of which is separable from the strip by a simple breaking operation. This form makes handling and insertion of the pins considerably easier for the dentist.
  • FIG. I is an enlarged side view of a strip of pins in accordance with the invention.
  • FIG. 2 is an enlarged cross-sectional view along the line 2-2 of FIG. I.
  • a principal feature of my invention is that a cement based on a cyanoacrylic monomer is uniquely suited for cementing steel pins to tooth dentine.
  • Any cyanoacrylate based cement can be used for this purpose but I prefer a material from the adhesive family known as alkyl 2-cyanoacrylates, having the general formula CH C(CN)COOR, where R can be methyl, butyl, isobutyl, propyl, ethyl, and also higher homologues such as hexyl, heptyl, and octyl cyanoacrylates.
  • R can be methyl, butyl, isobutyl, propyl, ethyl, and also higher homologues such as hexyl, heptyl, and octyl cyanoacrylates.
  • methyl 2-cyanoacrylate is available from Eastman Kodak under the name Eastman 910.
  • Isobutyl 2- cyanoacrylate is available from Johnson & Johnson under the name I BC-l.
  • These cyanoacrylate cements are available as a clear, thin liquid (low viscosity) monomer, which polymerizes and hardens instantly upon exposure to moisture. The cement can thus be applied as a thin coating to the pin end and then the coated pin end immediately inserted in the previously drilled tooth hole. This cement sets and hardens instantly in the presence of water or blood, and no time is wasted by the dentist having to wait for hardening of a slow-setting cement.
  • FIG. 1 is an enlarged side view of an elongated pin comprising five connected discrete pins 11 separated by regions l2, 13, 14, 15 of reduced cross-section.
  • the pin may be of round stock. and threaded throughout, or preferably of square stock and threaded throughout as illustrated.
  • the reduced crosssection regions 12-15 may have a diameter of approximately one-half that of the pins.
  • the dentist In use, the dentist first drills in'the tooth the desired number of holes to receive pins. Then, holding one end 17 of the long strip 10, he applies a thin layer of cyanoacrylate cement to the free end 18 and quickly inserts the coated pin end in one of the drilled holes. Instantly the cement hardens and the pin end is locked in place. The dentist then breaks off the four remaining pins at the first thinned-down region 12, applies a new coat of cement to the free pin end and inserts the coated end into a second hole. He then breaks off the three remaining pins at the second thinned down region 13, and continues the procedure until all five discretev pin sections 11 have been mounted.
  • FIG. 2 illustrates the square cross-section of the pin 10 with the corners l9 threaded, thereby forming longitudinally extending crevices 20 along the flat sides for receiving cement to resist pin rotation.
  • the threa'ded pins can be mounted in a drilled oversize d hole, or a drilled hole of the same size, or a drilled or threaded undersized hole, and its anchoring therein established or enhanced bym'eans of the cyanoacrylate cement as described above.
  • the cyanoacrylate cement also serves to seal the hole in the tooth thereby eliminating the need for using an additional varnish.
  • a method of anchoring a metal pin to a tooth comprising forming in the tooth a hole having a width approximately equal to that of the pin, applying a thin coating of a liquid cyanoacrylate cement to an end of the pin, then before the cyanoacrylate cement hardens rapidly inserting the pin end into the hole in order to anchor it therein by means of a bond formed between the cyanoacrylate cement and each of the tooth and the pin, and wherein the pin is supplied in the form of an elongated strip of at least four pins of the same width separated by regions of reduced cross-section, and after the first pin is anchored, the remaining pins still in strip form are broken off, cement again applied to a free pin end, the latter inserted in another tooth hole, and so-on until all the pins on the strip have been anchored in place.

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  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Dental Prosthetics (AREA)
  • Dental Preparations (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dowels (AREA)
US240003A 1972-03-31 1972-03-31 Tooth anchoring means and method Expired - Lifetime US3928915A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US240003A US3928915A (en) 1972-03-31 1972-03-31 Tooth anchoring means and method
JP48034711A JPS5226075B2 (enrdf_load_stackoverflow) 1972-03-31 1973-03-28
DE2316126A DE2316126A1 (de) 1972-03-31 1973-03-30 Zement zur befestigung eines stiftes in einer zahnhoehle
GB1530273A GB1422692A (en) 1972-03-31 1973-03-30 Tooth anchoring means and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US240003A US3928915A (en) 1972-03-31 1972-03-31 Tooth anchoring means and method

Publications (1)

Publication Number Publication Date
US3928915A true US3928915A (en) 1975-12-30

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US240003A Expired - Lifetime US3928915A (en) 1972-03-31 1972-03-31 Tooth anchoring means and method

Country Status (4)

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US (1) US3928915A (enrdf_load_stackoverflow)
JP (1) JPS5226075B2 (enrdf_load_stackoverflow)
DE (1) DE2316126A1 (enrdf_load_stackoverflow)
GB (1) GB1422692A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268253A (en) * 1979-12-26 1981-05-19 Gross Michael J Dowel post for dental and medical prosthetic devices
US4337043A (en) * 1977-10-26 1982-06-29 Ipco Corporation Dental anchor
US4349336A (en) * 1977-10-26 1982-09-14 Ipco Hospital Supply Corporation Square dental anchor
US4349335A (en) * 1977-10-26 1982-09-14 Ipco Hospital Supply Corporation Oval dental anchor
US4380433A (en) * 1979-07-27 1983-04-19 Ellman Alan G Dental wire dispenser and mounting tool
US4595376A (en) * 1984-05-25 1986-06-17 Nordin Harald E Magazine containing retention pins for the treatment of broken and undermined teeth
EP0275031A1 (en) * 1987-01-15 1988-07-20 Ipco Corporation Dental pin assembly
WO1988005289A1 (en) * 1987-01-14 1988-07-28 Ipco Corporation Dental pin system
RU2325967C2 (ru) * 2006-07-03 2008-06-10 Открытое акционерное общество "Белебеевский завод "Автонормаль" Способ изготовления шпильки с шестигранником и буртиком на гладкой части стержня, имеющего резьбу и участок малого диаметра с одной стороны
US11272969B2 (en) * 2016-10-25 2022-03-15 Swemac Innovation Ab Osseous pin, guide sleeve therefor, extraction member therefor and kit

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332993A (en) * 1976-09-07 1978-03-28 Ellman S Mechanism and method of engaging repairing pin with tooth and kit therefor
JPS548638A (en) * 1977-06-23 1979-01-23 Origin Electric Crystalline coating material
GB9122295D0 (en) * 1991-10-21 1991-12-04 Filhol Stuart J Dental pin assembly
GB2283293A (en) * 1993-10-29 1995-05-03 Avdel Systems Ltd Dual-function fastener and method of use
GB2296062B (en) * 1994-03-15 1997-01-29 Sicame Electrical Dev Ltd Screw shank for clamping
GB9404979D0 (en) * 1994-03-15 1994-04-27 Sicame Electrical Dev Ltd Improvements relating to clamping screws
NL2000263C2 (nl) * 2006-10-06 2008-04-08 Bin Innovations Draadstang en samenstel voor het produceren van gebruiksklare stukken draadeind.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1475808A (en) * 1921-09-21 1923-11-27 Joseph B Foster Dental bridge
US3250002A (en) * 1962-02-26 1966-05-10 Michael B Collito Dental methods employing a cyanoacrylate
US3675329A (en) * 1971-01-20 1972-07-11 Bernard Weissman Dental anchoring pin and head therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1475808A (en) * 1921-09-21 1923-11-27 Joseph B Foster Dental bridge
US3250002A (en) * 1962-02-26 1966-05-10 Michael B Collito Dental methods employing a cyanoacrylate
US3675329A (en) * 1971-01-20 1972-07-11 Bernard Weissman Dental anchoring pin and head therefor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337043A (en) * 1977-10-26 1982-06-29 Ipco Corporation Dental anchor
US4349336A (en) * 1977-10-26 1982-09-14 Ipco Hospital Supply Corporation Square dental anchor
US4349335A (en) * 1977-10-26 1982-09-14 Ipco Hospital Supply Corporation Oval dental anchor
US4380433A (en) * 1979-07-27 1983-04-19 Ellman Alan G Dental wire dispenser and mounting tool
US4268253A (en) * 1979-12-26 1981-05-19 Gross Michael J Dowel post for dental and medical prosthetic devices
US4595376A (en) * 1984-05-25 1986-06-17 Nordin Harald E Magazine containing retention pins for the treatment of broken and undermined teeth
WO1988005289A1 (en) * 1987-01-14 1988-07-28 Ipco Corporation Dental pin system
US4850874A (en) * 1987-01-14 1989-07-25 Ipco Corporation Dental pin system
EP0275031A1 (en) * 1987-01-15 1988-07-20 Ipco Corporation Dental pin assembly
RU2325967C2 (ru) * 2006-07-03 2008-06-10 Открытое акционерное общество "Белебеевский завод "Автонормаль" Способ изготовления шпильки с шестигранником и буртиком на гладкой части стержня, имеющего резьбу и участок малого диаметра с одной стороны
US11272969B2 (en) * 2016-10-25 2022-03-15 Swemac Innovation Ab Osseous pin, guide sleeve therefor, extraction member therefor and kit

Also Published As

Publication number Publication date
GB1422692A (en) 1976-01-28
JPS5226075B2 (enrdf_load_stackoverflow) 1977-07-12
JPS499083A (enrdf_load_stackoverflow) 1974-01-26
DE2316126A1 (de) 1973-10-18

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