Title:
CORRECTIVE INSTRUMENT FOR ENLARGING SET OF TEETH
Document Type and Number:
Japanese Patent JPH03234254
Kind Code:
A
Abstract:
PURPOSE: To expand the rear portion of teeth for correcting the tooth row under the mixedly existing state of a milk tooth or milk tooth and permanent tooth by forming an elongated recess receiving the tooth row of a patient between the cheek side edge and tongue side edge of a U-shaped orthodontic implement to make receiving ports for receiving individual teeth larger than the normal interval between teeth. CONSTITUTION: An orthodontic implement 10 is U-shaped to be embedded in the upper and lower jaws and has on the outside a lip-cheek side edge 12 and on the inside a tongue side edge 14 so that the respective edges project upward and downward to connecting glen parts 16 embedded in the engaging surfaces of teeth of the orthodontic implement 10 for expanding the upper and lower jaws. A region between both edges 12, 14 forms the shape of a groove 18 in the incisor region and forms individual receiving ports 20 for the canine-second molar. The groove 18 in the lower jaw is formed to the erect posture to set an angle A between the incisor and lower jaw plane to about 85 deg.. A distance 22 between the canines, a distance 24 between the first milk-molar teeth and a distance 26 between second milk-molar teeth are expanded by a necessary amount, i.e., by about 1-20mm from the normal position so that the teeth move to the cheek side. Thus, molars are moved to the expansion position of the orthodontic implement to expand intervals to the incisor.
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Inventors:
AARU OO BAAGAASEN
Application Number:
JP2864790A
Publication Date:
October 18, 1991
Filing Date:
February 09, 1990
Export Citation:
Assignee:
BERGERSEN EARL OLAF
International Classes:
A61C7/08; (IPC1-7): A61C7/08
Attorney, Agent or Firm:
Keisuke Ozawa