Surgery – Truss – Pad
Patent
1993-12-02
1996-09-17
Smith, Ruth S.
Surgery
Truss
Pad
1286534, 433223, 623901, A61B 5055
Patent
active
055558844
ABSTRACT:
The present invention relates to a method and an apparatus for determining the shape of a tooth, a prosthesis, a jaw bone, or an implant structure with an Magnetic Resonance Imaging device. However, since these items lack a substantial number of protons, electrons, or molecules which can be detected by an Magnetic Resonance Imaging device, these items are supplied with an Magnetic Resonance Imaging contrast medium which is rich in such protons, electrons, or molecules. Therefore, once the Magnetic Resonance Imaging contrast medium is supplied to the tooth, prosthesis, jaw bone, or implant structure, the Magnetic Resonance Imaging device can measure the items by measuring the Magnetic Resonance Imaging contrast medium surrounding the items. Furthermore, an electrical circuit may be provided which can determine the shape of the tooth, prothesis, jaw bone, or implant structure based on the measurements of the Magnetic Resonance Imaging device. Also, a three dimensional cutter may be provided which can create a crown or other implant based on the shape determined by the electrical circuit.
REFERENCES:
patent: 4575805 (1986-03-01), Moermann et al.
patent: 5221204 (1993-06-01), Kruger et al.
patent: 5266030 (1993-11-01), Van Der Zel
patent: 5268165 (1993-12-01), Hedlund et al.
Kabushiki Kaisha Egawa
Smith Ruth S.
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