US1987712A - Artificial teeth - Google Patents

Artificial teeth Download PDF

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Publication number
US1987712A
US1987712A US555912A US55591231A US1987712A US 1987712 A US1987712 A US 1987712A US 555912 A US555912 A US 555912A US 55591231 A US55591231 A US 55591231A US 1987712 A US1987712 A US 1987712A
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US
United States
Prior art keywords
teeth
shaped
accordance
tooth
maxilla
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
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US555912A
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English (en)
Inventor
Schroder Hermann
Nussbaum Robert
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Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US1987712A publication Critical patent/US1987712A/en
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    • 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
    • A61C13/08—Artificial teeth; Making same
    • A61C13/097—Artificial teeth; Making same characterised by occlusal profiles, i.e. chewing contact surfaces
    • 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
    • A61C13/08—Artificial teeth; Making same

Definitions

  • the cavity being formed by a certain trihedral angle arrangement, is situated in every single tooth.
  • This configuration does not, however, render a free and unhindered maxillary movement possible during the masticating process, because the molars of the inferior maxilla have been provided with ascending bevels in the direction of the cheeks and in consequence thereof the teeth of the superior maxilla are forced to glide up with the tectiform or roof-shaped part of the masticating surfaces of the upper molars along said bevels during the lateral and mixed lateral and forward motion of the teeth.
  • One of the objects of the present invention is to provide artificial teeth which will facilitate as much as possible the mixed lateral and forward motions controlled by the motion of the maxillary joint during the masticating process.
  • the above-mentioned object ofthe present invention may be realized by providing a curved 5 transverse ledge on the dome-shaped teeth and/ or the counter teeth, which form the prothese.
  • the dome-shaped molar teeth and/or the counter teeth may be provided with a substantially S-shaped transverse ledge allowing lateral and 1.0 longitudinal movements as well as every kind of combined lateral and longitudinal movements of the teeth.
  • the S-shaped conguration of the transverse ledge is particularly advantageous forvthat reason that, on the one hand, it improves the chewing process and, on the other hand, it allows the transverse ledge to glide outwards without being interfered with, owing to the fact that the mould or recess, being formedby two adjoining teeth, shows no projection or protuberance which has to be passed, as a result of the situation of the S-shaped transverse ledge at the mesial sides of the molars towards the cheeks and at the distalsides of the molars towards the tongue, so that a practically unimpeded lateral motion and a mixed lateral and forward motion to the fullest possible extent of all maxillary motions that may be possible, is ensured.
  • the masticating surfaces of the frontal premclars show in accordance with the present invention in the forward section a short, horizontal surface, or a surface whichis slightly inclined upwards or downwards, whilst they are forming the mould or recess in the rearward section.
  • the tooth has, therefore, been given a dissymmetric shape and that for the ⁇ reason of its functional purposes.
  • the highest part of the cupola or dome-shaped teeth and of the mould or recess teeth may be placed in the centre of the teeth or in front or behind the centre of the teeth for the purpose of attaining articulatory correct proportions in accordance with the prevailing requirements.
  • the upper surfaces of the teeth may be smooth or they may show channelled indentations.
  • Fig. 1 being a side view of the premolars and molars of the right half of a set of teeth
  • Fig. 2 is a plan viewof the teeth of the inferior maxilla in accordance with Fig. 1.
  • Fig. 3 is a sectional View on the line A-B of Fig. 2, and
  • Figs. 4 and 6 are further examples of performance of the teeth forming the moulds or recesses.
  • Fig. 5 represents a sectional View online C-D in accordance with Fig. 4.
  • Fig. rI shows teeth having transverse ledges of a diil'erent shape.
  • the teeth o1' the superior maxilla, a; b, c, d are dome-shaped and are engaging in the recesses or moulds between each two of the teeth of the inferior maxilla.
  • Each two of the teeth of the inferior maxilla are forming a mould or a recess in which the dome-shaped tooth appertaining thereto, engages.
  • These moulds or recesses may be of the most heterogeneous designs.
  • the moulds or recesses are made to be concave in longitudinal, as well as in cross section. They may, however, as shown by the example of performance in accordance with Figs.
  • the moulds 4 and 5 also be concave in longitudinal section and plane in cross section, in which case the surface of the mould or recess forms a cylindrical surface.
  • the surface may also be plane in longitudinal section and, in accordance with Fig. 3, trough-shaped; in this case, too, the surface of the mould is cylindrical.
  • the moulds may be plane not only in longitudinal section, but also in cross section and this would represent a longitudinal section in accordance with Fig. 6 and a cross section in accordance with Fig. 5.
  • the lower frontal premolar e is of such dissymmetrical design, that it shows in its front section a face i being straight or slightly inclined forward and downward and occupying about 1/5 to l/2 o! the total surface, from the rearward edge of which a straight or concave surface k is extending obliquely rearwardly and downwardly under a rather accentuated angle.
  • the dome-shaped teeth may be provided with a transverse ledge m being situated either in front or behind the centre of the tooth.
  • Fig. 7 shows an S-shaped ledge having its two ends bent in opposite directions, which can be used on dome shaped teeth and/or on counter teeth.
  • a pair of counter teeth forming a recess.
  • a domeshaped molar tooth of one maxilla adapted to engage in said recess, S-shaped transverse ledge on at least one of said teeth, said ledge allowing lateral andlongitudinal movements as well as every kind of combined lateral and longitudinal movements of the teeth.

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  • 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)
US555912A 1930-11-06 1931-08-08 Artificial teeth Expired - Lifetime US1987712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE161975X 1930-11-06

Publications (1)

Publication Number Publication Date
US1987712A true US1987712A (en) 1935-01-15

Family

ID=5682439

Family Applications (1)

Application Number Title Priority Date Filing Date
US555912A Expired - Lifetime US1987712A (en) 1930-11-06 1931-08-08 Artificial teeth

Country Status (4)

Country Link
US (1) US1987712A (fr)
AT (1) AT135160B (fr)
CH (1) CH161975A (fr)
FR (1) FR720804A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598769A (en) * 1951-04-17 1952-06-03 Robert J Donavan Artificial denture
US2616789A (en) * 1951-03-19 1952-11-04 Certain Teed Prod Corp Method of producing gypsum plaster
US5326262A (en) * 1992-12-01 1994-07-05 Jorgenson H Grant Method of making cuspless artificial dentition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0956831B1 (fr) 1998-05-15 2005-03-16 Max Bosshart Jeu de molaires artificielles d'une prothèse dentaire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616789A (en) * 1951-03-19 1952-11-04 Certain Teed Prod Corp Method of producing gypsum plaster
US2598769A (en) * 1951-04-17 1952-06-03 Robert J Donavan Artificial denture
US5326262A (en) * 1992-12-01 1994-07-05 Jorgenson H Grant Method of making cuspless artificial dentition
US6062860A (en) * 1992-12-01 2000-05-16 Jorgenson; H. Grant Artificial posterior teeth

Also Published As

Publication number Publication date
FR720804A (fr) 1932-02-24
CH161975A (de) 1933-05-31
AT135160B (de) 1933-10-25

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