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ARTIFICIAL TOOTH

  • US 20100119992A1
  • Filed: 04/18/2007
  • Published: 05/13/2010
  • Est. Priority Date: 04/18/2007
  • Status: Active Grant
First Claim
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1. An artificial tooth of a right side or left side mandibular first premolar tooth having a buccal cusp tip, a lingual cusp tip, a mesial pit, and a distal pit, being an artificial tooth of a right side or symmetric left side mandibular first premolar tooth, wherein:

  • a) in an example of the right side, in a case of supposing the distal pit to be the origin of the virtual system of XYZ orthogonal coordinates of this tooth, when an arrangement is determined such that the line segment connecting between a point for dividing the line segment connecting between the mesial pit and the distal pit by 29;

    71 and a point for dividing the line segment connecting between the buccal cusp tip and the lingual cusp tip by 47;

    53 is parallel to the Z-axis, that the line segment connecting between the mesial pit and the distal pit is parallel to the XZ plane of the system of XYZ orthogonal coordinates, and that the condition is satisfied in the relation of X-coordinate value of mesial pit<

    X-coordinate value of distal pit,b) the ratio of the distance of X-axis from the distal pit to minimum position of X-coordinate value of the mesial surface of the tooth, and the distance of X-axis from the distal pit to maximum position of X-coordinate value of the distal surface of the tooth is 75;

    25 to 85;

    15,c) the ratio of the distance of Y-axis from the distal pit to maximum position of Y-coordinate value of the buccal surface of the tooth, and the distance of Y-axis from the distal pit to maximum position of Y-coordinate value of the lingual surface of the tooth is 49;

    51 to 59;

    41,d) the distance of the line segment connecting between the mesial pit and the distal pit is 42 to 52% of the maximum width,e1) the distance of the line segment connecting between the mesial pit and the buccal cusp tip is 84 to 94% of the distance of the line segment connecting between the mesial pit and the distal pit,e2) the distance of the line segment connecting between the mesial pit and the lingual cusp tip is 66 to 76% of the distance of the line segment connecting between the mesial pit and the distal pit,f1) the distance of the line segment connecting between the distal pit and the buccal cusp tip is 110 to 120% of the distance of the line segment connecting between the mesial pit and the distal pit,f2) the distance of the line segment connecting between the distal pit and the lingual cusp tip is 83 to 93% of the distance of the line segment connecting between the mesial pit and the distal pit, andg) the distance of the line segment connecting between the buccal cusp tip and the lingual cusp tip is 88 to 98% of the distance of the line segment connecting between the mesial pit and the distal pit.

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