Dentistry – Method or material for testing – treating – restoring – or...
Patent
1995-12-05
1998-09-01
Wilson, John J.
Dentistry
Method or material for testing, treating, restoring, or...
433 54, 433213, 433214, A61C 1100
Patent
active
058001743
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method in which an articulator is used. The jaw position/bite of an individual, and the function of this jaw position/bite, can be represented in the articulator. The method also makes use of cuter equipment, for example a personal computer, in which information concerning the jaw position/bite, or one or more parts thereof, is input into memory elements by means of a reading function. First controls can be initiated on the computer equipment, and contours or vertical sections representative of the input information, that is of the jaw position/bite, or of the part(s), can be reproduced graphically on the computer screen of the computer equipment as a function of the first controls. In addition, simulation of alterations, such as (additions, removals, among others,) in the vertical sections or the contours can be effected with the aid of second controls on the computer equipment, such as the terminal, for example, in order to obtain a construction or construction alteration in the jaw position/bite or the part(s). The invention also relates to an arrangement for carrying out the method.
BACKGROUND OF THE INVENTION
The present invention makes use of, among other things, the teaching in Swedish patent application 93.02399-2, which describes a method and arrangement for initiating, by means of a CADD program in the computer equipment, graphic representations of vertical sections or contours of an imaged object for use in the human body. The object can in this case be rotated about a central axis. The object is reproduced through its different contours at different angles of rotation in a horizontal plane through the object. Alterations, for example additions and removals, among others, can be initiated on the respective contour. In this way, there is, on the whole, generators construction freedom despite the fact that there is a relatively very small quantity of available data concerning the three-dimensional structure of the object. The reading function itself also contributes to the small quantities of data by utilizing coordinate systems in which two parameters can be varied in a predetermined manner, and only one parameter cannot be varied in a predetermined manner. The technique as such, with its associated computer equipment, is easily accessible to people who are practicing in, among other areas, the dental field.
SUMMARY OF THE INVENTION
In connection with the production of support members and accessories for teeth, bridges, and other dental articles, there is a requirement to achieve the necessary accuracy of manufacture using relatively small quantities of data. The data are intended to reproduce complicated shapes of the bodies and object, and alternations to such bodies and objects. The aim in this respect is for accuracies of manufacture of 0.01-0.02 mm, or greater. The invention proposes a solution to this problem, among others.
In the production, of dental articles such as teeth and bridges it is important to be able to retain, to the greatest possible extent, the use of known tried and tested components for example known types of articulators. The invention solves this problem too.
Producing a model of the object, and the routines involved in the production of constructions, alterations and additions to an individual's dentition must, in accordance with present-day requirements, be made easier for the patients, so that, for example, it is possible to carry out a smaller number of trials. The invention solves this problem too.
Notwithstanding the need for production procedures and arrangements which are simplified from the patient's point of view, it is important to provide for rational and efficient handling by the personnel carrying out the treatment, both from the technical and economic point of view. The invention also provides a solution to this problem.
In accordance with the concept behind the invention, computer equipment will be used and made easily accessible to the practicing personnel. The invention solves this problem
REFERENCES:
patent: 4370130 (1983-01-01), Berger
patent: 4611288 (1986-09-01), Duret et al.
patent: 5273429 (1993-12-01), Rekow et al.
patent: 5340309 (1994-08-01), Robertson
patent: 5401170 (1995-03-01), Nonomura
patent: 5454717 (1995-10-01), Andreiko et al.
patent: 5527182 (1996-06-01), Willoughby
Nobel Biocare AB
Wilson John J.
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