US3473226A - Dentist's wedge - Google Patents

Dentist's wedge Download PDF

Info

Publication number
US3473226A
US3473226A US715287A US3473226DA US3473226A US 3473226 A US3473226 A US 3473226A US 715287 A US715287 A US 715287A US 3473226D A US3473226D A US 3473226DA US 3473226 A US3473226 A US 3473226A
Authority
US
United States
Prior art keywords
wedge
base surface
tooth
section
breadth
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 - Lifetime
Application number
US715287A
Other languages
English (en)
Inventor
Sven Anders Arlers
Jan-Ake Hallen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JAN AKE HALLEN
Original Assignee
JAN AKE HALLEN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JAN AKE HALLEN filed Critical JAN AKE HALLEN
Application granted granted Critical
Publication of US3473226A publication Critical patent/US3473226A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A61C5/80—Dental aids fixed to teeth during treatment, e.g. tooth clamps
    • A61C5/88—Wedges

Definitions

  • a dentists wedge is designed as an elongated body having a cross section essentially like an isosceles triangle, in which the base is considerably shorter than the two legs. The edges between the base surface and the adjoining side surfaces are convex and the ridge formed by the adjoining side surfaces is likewise convex.
  • wedges of wood or synthetic resin have been comparatively short, i.e. the wedge angle is great. In this manner only a small part of the wedge will find contact with the teeth when forced into the space therebetween.
  • the wedges usually have rectangular or triangular cross section, and in the latter case the sides are equilateral. Such a wedge will lack stability as it is easily twisted.
  • Wooden wedges have been made of hard and of soft material. A hardwood wedge may deform the matrix ribbon and easily works free of the space between the teeth. A wedge made of soft wood, such as used in matches, will itself be deformed when forced into the space. Wooden wedges may also be cut from a block to fit the actual need. This is a time consuming job and when utilizing a hard wood the final shaping must be done by grinding. It is evident that manually prepared wedges of this type are far from sterile.
  • the cross section of the wedge shall fit the shape of the space between the teeth.
  • the base surface of the wedge shall preferably be located below the cavity to be filled.
  • the wedge shall, along its total length, be so designed that it will be safely retained in the space.
  • the wedge shall be made of a material which is hard to deform and does not swell when coming into contact with saliva.
  • the material used must be of a kind which has a certain degree of softness and adaptability, but nevertheless has a satisfactory separation action.
  • the wedge must be so designed that an implement for instance tweezers, will obtain a good grip thereof for application as well as for removal.
  • the wedge must be able to stand sterilization and preferably be so arranged that it may be removed from a stand without contamination of other wedges.
  • the object of the invention is to design a wedge which fulfils the demands above stated and it is characterized nited States Patent 0 in the cross section having the shape of an isosceles triangle, in which the base is considerably shorter than the legs and in which the longitudinal edges between the base surface and the adjoining side surfaces are convex in relation to the longitudinal axis of the base surface.
  • the breadth of the wedge will thus slowly increase in the direction away from the point and finally decrease again, which makes it possible to securely retain the wedge.
  • the maximum breadth of the wedge is utilized to apply a pressure against the portion where a leakage of filling material is to be expected.
  • FIGURE 1 shows on an enlarged scale a view, as seen from above of three teeth, of which the middle one is surrounded by a matrix ribbon. To the right of the tooth this is forced into contact with the tooth by means of a wedge of known design, whereas a wedge according to the invention is utilized to the left of the tooth.
  • FIGURE 2 shows a section along line II-II of FIG- URE 1.
  • FIGURE 3 shows a wedge according to the invention on an enlarged scale.
  • FIGURE 4 shows an elevation of the wedge in FIG- URE 3.
  • FIGURES 5-9 are sections along lines VV, VI-VI, VII-VII, VIIIVIII and DC-IX, respectively, in FIG- URE 4.
  • FIGURE 10 shows a number of wedges formed integral with a disc
  • FIGURE 11 shows a support stand for a number of wedge carrying discs according to FIGURE 10.
  • the novel wedge has a cross-section shaped like a isosceles triangle in which a base line b corresponds to a plane base surface 1 of the wedge.
  • This base surface is arranged essentially at right angles to an end surface 3 of the wedge being remote from a point 2 thereof.
  • Joint 4 between the two side surfaces corresponding to legs a and c of the triangle forms a ridge, the breadth of which successively increases from the point 2 towards the end surface.
  • the ridge is furthermore designed to follow a convex line the greatest height of which measured from the base surface is located closer to the end surface 3 than to the point 2.
  • the maximum height is located at about one third or one fourth of the length measured from the end surface.
  • Edges 5 and 6 formed between the base surface 1 and the side surfaces corresponding to the legs a and 0, respectively, are furthermore slightly convex in relation to the longitudinal axis of the base surface.
  • the maximum convexity of the edges are preferably located in the portion of the wedge, where the maximum height of the ridge is to be found.
  • the convexity of the edges of the base surface is preferably so chosen, that part of the base surface will obtain an essentially constant breadth, with the end of the base surface close to the point having a lesser breadth that the portion having essentially constant breadth. This portion covers about one fourth of the total length of the wedge and is preferably located at about the middle portion of the wedge.
  • the convex lines form parts of arcs, the relation of the radius of the ridge 4 in relation to that of the edges 5 and 6 being 1:3.
  • the end surafce 3 of the wedge is continued as an elongated part 7 designed as a mounting or handle to be used when the wedge is brought into working position or removed therefrom, respectively.
  • This part 7 has a cross section the dimensions of which are larger than 3 those of the adjacent part of the wedge, with the cross section of the part being mainly rectangular at this end.
  • the free end of the mounting part extending about halfway the length thereof has a cross-section shaped as an inverted T where the horizontal flanges are coplanar with the base surface 1.
  • a number of wedges are formed integral with a disc 9, with the point of each wedge being attached to the periphery of the disc in such a manner that a wedge may be easily torn ofi? from the disc.
  • This is provided with a central aperture adapted to be fitted on a support stand comprising a base plate 12 and a stanchion 13, and the latter has such a length that several discs may be fitted thereon.
  • each disc is provided with a slot 14 which cooperates with a corresponding key 15 of the stanchion.
  • the wedges and the discs are made of a synthetic resin of suitable nature for instance a semi-soft styrene resin which may be utilized to bring about a certain separation of the teeth when applied with force.
  • the wedges are manufactured with different breadths at the base surface to fit varying sizes of inter-tooth spaces. Three different sizes will usually be sufiicient, with each size being made on its own disc, possibly in different colors and the stand is designed to carry at least one disc of every size.
  • FIGURES 1 and 2 show a common situation when wedging a cervical matrix ribbon.
  • a wedge 17 of known design US. patent specification 2,867,905
  • This wedge 17 has straight sides, which cannot be brought into contact with the bulging sides of the tooth.
  • an interstice is formed between the ribbon and the tooth which is open downwards and thus permits entrance of saliva or extrusion of filling material.
  • Such excess of material (vide the arrow in FIGURE 2) will form pockets between the tooth and the gums, which forms nests for bacteria and increases the risk of secondary caries and parodontit.
  • FIG. 1 To the left of the middle tooth in FIGURES l and 2 a wedge according to the invention is shown. It is evident that the cross section of the wedge completely harmonizes with the shape of the inter-tooth shape.
  • the base surface rests against the gums and the side surfaces of the Wedge abut the matrix ribbons 16 and the juxtaposed tooth, respectively.
  • the ribbon will, due to the action of the wedge, be maintained in a proper position and is given a shape which conforms with the desired contour of the tooth.
  • the entrance of saliva is furthermore prevented, which simplifies the application of filling material.
  • the maximum breadth of the wedge may be utilized for exerting pressure just at the point where a leakage of filling material may be expected. This point is not always located furthermost in the mesial or distal, but depends on the caries situation.
  • the wedge may furthermore be used in connection to the restricted mesial surfaces at 4+4, Where fittings usually are difficult to make.
  • the wedge has sufiicient height to prevent twisting and the length thereof is not larger than necessary to permit an easy application without displacement of the lock for the matrix ribbon, which would cause discomfort to the patient.
  • a dentists wedge comprising an elongated solid body having a cross section essentially similar to an isosceles triangle, in which the base is considerably shorter than the legs, the improvement comprising that the longitudinal edges between the base surface and the side surfaces are convex in relation to the longitudinal axis of the base surface and the breadth of the base surface at the end of the wedge remote from the point being less than the breadth at the mid portion of the wedge.

Landscapes

  • Health & Medical Sciences (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)
US715287A 1967-03-31 1968-03-22 Dentist's wedge Expired - Lifetime US3473226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE04437/67A SE325990B (enrdf_load_stackoverflow) 1967-03-31 1967-03-31

Publications (1)

Publication Number Publication Date
US3473226A true US3473226A (en) 1969-10-21

Family

ID=20264188

Family Applications (1)

Application Number Title Priority Date Filing Date
US715287A Expired - Lifetime US3473226A (en) 1967-03-31 1968-03-22 Dentist's wedge

Country Status (2)

Country Link
US (1) US3473226A (enrdf_load_stackoverflow)
SE (1) SE325990B (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636631A (en) * 1970-12-18 1972-01-25 Benjamin F Tofflemire Teeth-separating wedges for use during filling operations
US4305707A (en) * 1980-01-04 1981-12-15 Marat Shimenkov Matrix device for making fillings
US4468199A (en) * 1983-01-10 1984-08-28 Weikel G Dental wedge
US4696646A (en) * 1985-12-23 1987-09-29 Maitland Ronald I Dental wedge and method of using same
US5527181A (en) * 1994-02-22 1996-06-18 Board Of Regents, The University Of Texas System Shape-conforming dental wedges
US5890901A (en) * 1998-04-22 1999-04-06 Ultradent Products, Inc. Dental wedge with neck
WO1999053857A1 (en) * 1998-04-22 1999-10-28 Ultradent Products, Inc. Dental wedges and related instruments
US6007334A (en) * 1997-02-25 1999-12-28 Schneider (Europe) Gmbh Interdental balloon
US6375463B1 (en) 1998-04-22 2002-04-23 Ultradent Products, Inc. Dental wedges having proximal ends with gritty top layers
US6468080B1 (en) 2001-09-04 2002-10-22 Ultradent Products, Inc. Dental wedge incorporating mechanically flexible features
US20040014006A1 (en) * 2002-06-28 2004-01-22 Tom Garrison Wedge for use in dental restoration
US8206151B2 (en) 2006-02-07 2012-06-26 Triodent Holdings Limited Dental wedge
USD720455S1 (en) * 2012-10-31 2014-12-30 Colldent Y.A Ltd Dental wedge
US10751148B2 (en) 2010-01-14 2020-08-25 David J. Clark Dental wedge
US11717379B2 (en) 2014-06-04 2023-08-08 David J. Clark Dental wedge

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782503A (en) * 1953-08-21 1957-02-26 Lyman F Thompson Interproximal stops for preventing filling overhang into the interproximal space between teeth
US3193094A (en) * 1961-03-20 1965-07-06 Robert J Schulstad Dental wedges and package thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782503A (en) * 1953-08-21 1957-02-26 Lyman F Thompson Interproximal stops for preventing filling overhang into the interproximal space between teeth
US3193094A (en) * 1961-03-20 1965-07-06 Robert J Schulstad Dental wedges and package thereof

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636631A (en) * 1970-12-18 1972-01-25 Benjamin F Tofflemire Teeth-separating wedges for use during filling operations
US4305707A (en) * 1980-01-04 1981-12-15 Marat Shimenkov Matrix device for making fillings
US4468199A (en) * 1983-01-10 1984-08-28 Weikel G Dental wedge
US4696646A (en) * 1985-12-23 1987-09-29 Maitland Ronald I Dental wedge and method of using same
US5527181A (en) * 1994-02-22 1996-06-18 Board Of Regents, The University Of Texas System Shape-conforming dental wedges
US6007334A (en) * 1997-02-25 1999-12-28 Schneider (Europe) Gmbh Interdental balloon
US6375463B1 (en) 1998-04-22 2002-04-23 Ultradent Products, Inc. Dental wedges having proximal ends with gritty top layers
WO1999053857A1 (en) * 1998-04-22 1999-10-28 Ultradent Products, Inc. Dental wedges and related instruments
US5890901A (en) * 1998-04-22 1999-04-06 Ultradent Products, Inc. Dental wedge with neck
US6402514B1 (en) 2000-11-06 2002-06-11 Ultradent Products, Inc. Dental wedge with elastomeric sides for enhanced retention
US6468080B1 (en) 2001-09-04 2002-10-22 Ultradent Products, Inc. Dental wedge incorporating mechanically flexible features
US20040014006A1 (en) * 2002-06-28 2004-01-22 Tom Garrison Wedge for use in dental restoration
US7223101B2 (en) * 2002-06-28 2007-05-29 Tom Garrison Wedge for use in dental restoration
US8206151B2 (en) 2006-02-07 2012-06-26 Triodent Holdings Limited Dental wedge
US8425228B2 (en) 2006-02-07 2013-04-23 Triodent Holdings Limited Dental wedge
US10751148B2 (en) 2010-01-14 2020-08-25 David J. Clark Dental wedge
USD720455S1 (en) * 2012-10-31 2014-12-30 Colldent Y.A Ltd Dental wedge
US11717379B2 (en) 2014-06-04 2023-08-08 David J. Clark Dental wedge

Also Published As

Publication number Publication date
SE325990B (enrdf_load_stackoverflow) 1970-07-13

Similar Documents

Publication Publication Date Title
US3473226A (en) Dentist's wedge
US11382717B2 (en) Devices and a seamless, single load cavity preparation and filing technique
JP3747251B2 (ja) ヒトの自然歯用の人工臼歯
US3898736A (en) Orthodontic appliance and method of using same
US6186786B1 (en) Dental instrument
AU2016269402B2 (en) A dental wedge
US4854867A (en) Dental tool for facilitating gingival retraction
US6068481A (en) Flexible dimension temporary and long-term provisional crowns
US7726970B2 (en) Composite temporary and long-term provisional crowns and bridges
US2782503A (en) Interproximal stops for preventing filling overhang into the interproximal space between teeth
US3636631A (en) Teeth-separating wedges for use during filling operations
US2959858A (en) Pliers for making bands on teeth
US1133379A (en) Dental matrix for approximal fillings.
US4578035A (en) Dental wedge
US5695340A (en) Dental restoration system and method
US3250004A (en) Disposable combination anterior bite registration and impression tray
US3713222A (en) Dental instrument for use with interdental wedges
US2591744A (en) Anatomical contact-forming dental matrix band
US3755898A (en) Artificial posterior teeth
US3623227A (en) Dental instrument for use with teeth-spreading wedges during filling operations
US1072015A (en) Matrix device.
US3418716A (en) Interproximal wedging device
Ferrier et al. Gold foil operations
US2776485A (en) Tooth block with metal onlay
US4354840A (en) Splinting device for anterior teeth