Method and device for the three-dimensional mapping and...

A - Human Necessities – 61 – C

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A61C 13/00 (2006.01)

Patent

CA 2449509

The invention relates to a method for the three-dimensional determination and digitisation of a plaster- or positive-model (1), in particular for the production of replacement teeth, whereby a method with improved handling and costs and with the following steps is disclosed: clamping the plaster- or positive-model (1) in a mounting (2) with a defined orientation, irradiation of the plaster- or positive-model (1), by means of a radiation source and recording of the radiation reflected by the plaster- or positive-model (1), evaluation of the reflected radiation by a scanning unit (7) and generation of separation information, defined movement of the plaster- or positive-model (1) relative to the radiation source along an axis (y), approximately perpendicular to the direction of radiation and linking the displacement with the separation information. The invention also relates to a device for carrying out said method.

L'invention concerne un procédé pour mesurer et numériser en trois dimensions un modèle positif (1) ou en plâtre, notamment pour fabriquer une prothèse dentaire. L'invention vise à améliorer le maniement et la rentabilité du procédé qui, à cet effet, comprend les opérations suivantes: placer le modèle positif (1) ou en plâtre dans une fixation (2) selon une orientation définie; irradier le modèle positif (1) ou en plâtre au moyen d'une source de rayonnement et capter le rayonnement réfléchi par le modèle positif (1) ou en plâtre; analyser le rayonnement réfléchi au moyen d'une unité de balayage (7) et créer une information concernant les espacements; traiter le modèle positif (1) ou en plâtre de manière définie, relativement à la source de rayonnement, le long d'un axe (y) presque perpendiculaire au sens de rayonnement ; établir un lien entre le déplacement et l'information concernant les espacements. La présente invention porte également sur un dipositif pour réaliser ce procédé.

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