Dentistry – Method or material for testing – treating – restoring – or... – Crown
Patent
1996-07-31
1999-11-30
Wilson, John J.
Dentistry
Method or material for testing, treating, restoring, or...
Crown
433215, A61C 510
Patent
active
059932147
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method for the manufacture of a product such as a dental product, or a product for use in the human body and formed of with a sub-structure of titanium or other equivalent tissue-compatible material. The substructure is intended to be coated with ceramic onlay material (porcelain).
The present method includes information transfer, preferably via a telecommunications network, from a client.
The information may include data on the construction of the product. The method also includes the manufacture of the said substructure at the production site, and as the transfer or return of the product to the coating site for the ceramic onlay material or to the client.
The invention also relates to a device for facilitating application of ceramic onlay material, onto a product which is made of titanium, or equivalent tissue-compatible material and intended for dental or bodily purposes.
The invention furthermore relates to a product for use in a dental or other bodily context. A possible example of a product is a dental cap. The product comprises a substructure made of titanium or other tissue-compatible material which is intended to support one or more ceramic onlays.
BACKGROUND OF THE INVENTION
It is already known to use a transmission medium, for example a public telephone network, to transfer digital information on the construction of various dental products. With the aid of the information transfer, a dentist, dental technician, etc., can, in this case, request a machining site to produce a given dental product. It is also known to produce dental caps, dental bridge parts, etc., centrally, these being made of titanium or other tissue-compatible material. The production, which generally involves the milling of titanium material, is relatively complicated and requires complex technology which may not be available to the client. The product in question can, in this case, be regarded as a semi-finished product and returned to the client for further handling. For example, the client may coat the product in question with a ceramic material forming an onlay corresponding to a replacement tooth or the like.
The transfer of information to the central machining site is effected by an information loop which can include machining data, address data for the sender and the recipient, desired delivery date, etc.
It is already known, in the case of implants intended to become incorporated in the dentine, to provide the implant with a thin plasma layer of ceramic material which is intended to facilitate the incorporation of the implant into the dentine. It is thus already known to use plasma spray installations in conjunction with implants of this type.
SUMMARY OF THE INVENTION
Applying onlay material (ceramic) onto a product substructure which has been produced in this way is a relatively complicated procedure. The application is effected in different layers. It is difficult to get the porcelain, or the ceramic, to attach to the titanium, among other reasons because it is necessary to work at relatively low temperatures. The invention aims to solve this problem and proposes a method and device, and also a product, allowing the application of the onlay material to be considerably simplified for the customer and client.
There is also the problem of achieving an aesthetic covering of the substructure when applying the porcelain.
The titanium is dark and shows through the onlay material, especially if the latter is to be coated with a thin layer. The invention also solves this problem.
The feature which can principally be regarded as being characteristic of the novel method is that the information transfer includes implementation of data concerning the fact that the substructure or the product is to be coated with one or more plasma layers compatible with the material of the substructure/product. The production site in question is, in such case, equipped with a station in which the plasma layers can be applied by means of a plasma application installation which is acti
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Nobel Biocare AB
Wilson John J.
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