US3445932A - Artificial tooth - Google Patents

Artificial tooth Download PDF

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Publication number
US3445932A
US3445932A US581623A US3445932DA US3445932A US 3445932 A US3445932 A US 3445932A US 581623 A US581623 A US 581623A US 3445932D A US3445932D A US 3445932DA US 3445932 A US3445932 A US 3445932A
Authority
US
United States
Prior art keywords
tooth
support core
artificial tooth
ribs
core
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
US581623A
Other languages
English (en)
Inventor
Karl Alfred Kupper
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.)
Vita Zahnfabrik H Rauter GmbH and Co KG
Original Assignee
Vita Zahnfabrik H Rauter GmbH and Co KG
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 Vita Zahnfabrik H Rauter GmbH and Co KG filed Critical Vita Zahnfabrik H Rauter GmbH and Co KG
Application granted granted Critical
Publication of US3445932A publication Critical patent/US3445932A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/10—Fastening of artificial teeth to denture palates or the like
    • A61C13/102—Fastening of artificial teeth to denture palates or the like to be fixed to a frame
    • A61C13/1023—Facing and backing

Definitions

  • This invention provides an artificial tooth structure having a tooth body including a cavity for receiving a support core structure.
  • the artificial tooth structure includes an elevation located in the cavity between winglike ribs located on the rear portion of the said body.
  • the elevation includes a plateau and longitudinal grooves disposed between the plateau and the said wing-like ribs. At least one transverse step is located on the elevation and is contiguous to the said plateau.
  • the support core structure has corresponding stepped surfaces in abutting relationship to the surfaces within the said cavity.
  • the primary object of this invention is to eliminate the above and other disadvantages in conventional artificial teeth by providing an artificial tooth which has the appearance of an anatomically formed natural tooth, is highly stable when in use, and permits individual and irregular tooth shaping, both with a fixed bridge replacement and when making skeletal dentures of noble or other metals.
  • an artificial tooth with a pin at a rear side thereof for securement to dentures, the rear side of the tooth body has ridges, and a separate box-like support core engages with a stepped cavity between the ridges of the tooth body.
  • FIGURE 1 is a front elevational view of an artificial tooth constructed in accordance with this invention, and illustrates the front face of the tooth.
  • FIGURE 2 is an elevational view of the artificial tooth, and illustrates a pin carried by the tooth body projecting through a hole of a separate support core.
  • FIGURE 3 is a longitudinal sectional view of the artificial tooth taken generally along line 3-3 of FIGURE 2, and illustrates the support core seated in a cavity of the tooth body.
  • FIGURE 4 is an elevational view of the tooth with the support core removed, and illustrates ridge-receiving grooves in the cavity.
  • FIGURE 5 is a cross sectional view taken along line 5-5 of FIGURE 4, and more clearly illustrates the ridgereceiving grooves of the cavity.
  • FIGURE 6 is an elevational view of the support core, and illustrates a plurality of ridges which are complementan'ly contoured for reception in the grooves of the tooth body.
  • FIGURE 7 is a cross sectional view of the support core taken along the line 7--7 of FIGURE 6, and more clearly illustrates the configuration of the ridges.
  • the artificial tooth is shown as an incisor in the drawing and comprises a tooth body 1 and a support core 2 disposed at the rear side or face of the body 1.
  • the tooth body 1 has at its rear side a pair of longitudinally extending wing-like lateral ribs 3.
  • the support core 2 is disposed between the ribs 3 and the close fit therebetween provides the appearance of a one-piece structure, as is readily apparent from FIGURE 2 of the drawing.
  • the body 1 is provided with a right-angled step or shoulder 4 at its base against which abuts a corresponding projection 5 of the support core 2.
  • Another step or shoulder 6 (FIGURE 4) is formed at an upper portion of the body 1 in convex opposed relationship to the step or shoulder 4-.
  • a central generally trapezoidal plateau 7 is disposed between the steps 4, 16 and a pair of ridgereceiving grooves 8, 8 immediately adjacent the ribs 3 into which is received ridges 9, 9 of the support core 2.
  • a longitudinal cylindrical pin 10 constructed from a noble metal is embedded in the plateau 7 and passes through a hole 11 in the support core 2 when the latter is housed in the body cavity as shown best in FIGURES 2 and 3.
  • a curved tongue 13 of the support core 2 engages beneath and interlocks with a lower surface 12 of the body 1, thereby forming an additional shoulder or step so that the tooth body 1 has triple abutment surfaces against which the support core 2 is reinforced and supported under the pressure of chewing.
  • the various surfaces of abutment and engagement between the core and the tooth body, including the ridges 9, 9 seated in the grooves 8, 8, maintain the core and body in immoveable relationship and impart the heretofore noted one-piece appearance to the tooth.
  • Connection between the core 2 and the body 1 is also effected by the engagement between the pin 10 and the core hole 11.
  • the tooth may be constructed as shown in the drawings but the pin 10 and the hole 11 may be eliminated.
  • the support core 2 can be slid into the tooth body 1 from the base thereof.
  • a rear face 7a of the plateau 7 has its flanks parallel or undercut in a dovetail construction, as shown in dashed lines in FIGURE 5.
  • the ridges 9, 9 of the support core 2 are correspondingly contoured.
  • the artificial tooth Due to the wing-like lateral ribs 3, 3 the artificial tooth has the appearance of an anatomically formed natural tooth. These anatomically shaped lateral surfaces also give the tooth the appearance of a solid one-piece tooth free of sharp edges.
  • the ribs 3, 3 directed toward the mouth can be shortened by grinding as may be needed for the necessary thickness of metal plate.
  • the ribs may be sufficiently ground on all sides without losing the tooths innate stability and support, and without detracting from the appearance of an anatomically shaped tooth.
  • the tooth body provides excellent support when placed in a bridge or denture of any type.
  • An artificial tooth structure comprising, in combination,
  • said elevation includes at least one transverse step contiguous to said plateau
  • said support core structure has corresponding stepped surface in abutting relationship to the surfaces within said cavity.
  • said securing means passes through an aperture located in said support core.
  • An artificial tooth structure as defined in claim 4 wherein said body includes means for securing said structure to a denture, said securing means passes through an aperture located in said support core.
  • said elevation plateau is reduced in width in a direction toward a lower end portion of said tooth body.
  • said wing-like ribs converge in a direction toward the lower end portion of said tooth body.
  • said body cavity includes a shoulder at an upper end of said elevation plateau.
  • An artificial tooth structure as defined in claim 8 wherein said body includes at least one undercut ridge-receiving groove and said core structure includes an interlocking ridge to form a dovetail connection with said ridge receiving groove.
  • said core structure includes a curved tongue portion extending along the lower portion of the tooth body and is short of the cutting edge on said tooth body.

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 Prosthetics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US581623A 1965-09-27 1966-09-23 Artificial tooth Expired - Lifetime US3445932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV0029401 1965-09-27

Publications (1)

Publication Number Publication Date
US3445932A true US3445932A (en) 1969-05-27

Family

ID=7584866

Family Applications (1)

Application Number Title Priority Date Filing Date
US581623A Expired - Lifetime US3445932A (en) 1965-09-27 1966-09-23 Artificial tooth

Country Status (5)

Country Link
US (1) US3445932A (fr)
CH (1) CH450626A (fr)
DE (1) DE1491095A1 (fr)
FR (1) FR1494522A (fr)
GB (1) GB1156147A (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363169A (en) * 1920-06-30 1920-12-21 Frederick W Shapley Artificial tooth
US1860806A (en) * 1929-08-12 1932-05-31 Ralph C Cooley Artificial tooth mounting
US2247968A (en) * 1939-12-08 1941-07-01 W M Alexander Artificial tooth

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363169A (en) * 1920-06-30 1920-12-21 Frederick W Shapley Artificial tooth
US1860806A (en) * 1929-08-12 1932-05-31 Ralph C Cooley Artificial tooth mounting
US2247968A (en) * 1939-12-08 1941-07-01 W M Alexander Artificial tooth

Also Published As

Publication number Publication date
CH450626A (de) 1968-01-31
DE1491095A1 (de) 1969-06-12
FR1494522A (fr) 1967-09-08
GB1156147A (en) 1969-06-25

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