GB943190A - Fused porcelain-to-metal teeth - Google Patents

Fused porcelain-to-metal teeth

Info

Publication number
GB943190A
GB943190A GB3446462A GB3446462A GB943190A GB 943190 A GB943190 A GB 943190A GB 3446462 A GB3446462 A GB 3446462A GB 3446462 A GB3446462 A GB 3446462A GB 943190 A GB943190 A GB 943190A
Authority
GB
United Kingdom
Prior art keywords
porcelain
expansion
coefficient
metal
tooth
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
Application number
GB3446462A
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.)
PERMADENT PRODUCTS CORP
Original Assignee
PERMADENT PRODUCTS CORP
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 PERMADENT PRODUCTS CORP filed Critical PERMADENT PRODUCTS CORP
Priority to GB3446462A priority Critical patent/GB943190A/en
Publication of GB943190A publication Critical patent/GB943190A/en
Expired legal-status Critical Current

Links

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
    • A61C13/08—Artificial teeth; Making same
    • A61C13/083—Porcelain or ceramic teeth
    • A61C13/0835—Ceramic coating on metallic body

Landscapes

  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

An artificial tooth comprises a metal base having a coefficient of expansion between 80 and 170 X 10-7 per degree Centrigrade and, attached to it, a porcelain covering having a coefficient of expansion slightly less than that of the metal base. This avoids the porcelain being placed under tension when the tooth is cooled to normal temperatures. In one method of making such a tooth, the porcelain shell is first formed and the metal is cast into it and it is possible to do this in such a way that oxidization of the metal does not occur and a secure bond is obtained without any discolouration. In order to obtain the desired coefficient of expansion of the porcelain, two components are prepared, one comprising high orthoclase felspar and the other comprising ordinary clear felspar and silica, the relative proportions of which bear a direct relation to the coefficient of expansion of the resulting porcelain.
GB3446462A 1962-09-08 1962-09-08 Fused porcelain-to-metal teeth Expired GB943190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3446462A GB943190A (en) 1962-09-08 1962-09-08 Fused porcelain-to-metal teeth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3446462A GB943190A (en) 1962-09-08 1962-09-08 Fused porcelain-to-metal teeth

Publications (1)

Publication Number Publication Date
GB943190A true GB943190A (en) 1963-12-04

Family

ID=10365984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3446462A Expired GB943190A (en) 1962-09-08 1962-09-08 Fused porcelain-to-metal teeth

Country Status (1)

Country Link
GB (1) GB943190A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153681A (en) * 1984-02-07 1985-08-29 Rufino Aragoneses Urena Fixed dental prosthesis
EP2853229A1 (en) * 2013-09-27 2015-04-01 Seiko Epson Corporation Dental blank to be machined, metal powder for powder metallurgy, dental metal frame for porcelain bonding, and dental prosthesis
US20150216636A1 (en) * 2014-01-31 2015-08-06 Seiko Epson Corporation Blank material to be cut for dentistry, metal powder for powder metallurgy, metal frame for porcelain fusing for dentistry, and dental prosthesis
CN110870796A (en) * 2018-08-31 2020-03-10 柳州市佛冠齿科数字化研发有限公司 Multilayer porcelain tooth model

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153681A (en) * 1984-02-07 1985-08-29 Rufino Aragoneses Urena Fixed dental prosthesis
EP2853229A1 (en) * 2013-09-27 2015-04-01 Seiko Epson Corporation Dental blank to be machined, metal powder for powder metallurgy, dental metal frame for porcelain bonding, and dental prosthesis
CN104511587A (en) * 2013-09-27 2015-04-15 精工爱普生株式会社 Dental blank to be machined and metal powder for powder metallurgy
US9888987B2 (en) 2013-09-27 2018-02-13 Seiko Epson Corporation Dental blank to be machined, metal powder for powder metallurgy, dental metal frame for porcelain bonding, and dental prosthesis
US20150216636A1 (en) * 2014-01-31 2015-08-06 Seiko Epson Corporation Blank material to be cut for dentistry, metal powder for powder metallurgy, metal frame for porcelain fusing for dentistry, and dental prosthesis
US9655698B2 (en) * 2014-01-31 2017-05-23 Seiko Epson Corporation Blank material to be cut for dentistry, metal powder for powder metallurgy, metal frame for porcelain fusing for dentistry, and dental prosthesis
CN110870796A (en) * 2018-08-31 2020-03-10 柳州市佛冠齿科数字化研发有限公司 Multilayer porcelain tooth model

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