Occlusion correction improvement instrument and correction improvement method using the instrument

An occlusion correction improvement instrument comprising:

• an upper mold-mounting member provided with a plate-shaped member mounted so as to be parallel to a corrected Camper's plane obtained with a corrected Camper's plane-acquiring device by correcting a Camper's plane of an upper model having a tooth model-shaped surface of a maxillary tooth row based on a gravitational pull and an inclination of a center of gravity of a patient's head, the upper mold-mounting member being arranged to be mounted on the upper model and at a plane parallel to the corrected Camper's plane;
• and
• a lower mold-mounting member mountable on a lower model having a tooth model-shaped surface of a mandible tooth row, the lower mold-mounting member having a pin-shaped projection portion mounted such that a position of the pin-shaped projection portion can be fixed, with the position thereof being adjustable in a lateral direction and in a vertical direction, the lower mold-mounting member also having an adjustment member for adjusting a position of the lower mold-mounting member relative to the upper mold-mounting member on the plane parallel to the corrected Camper's plane, with the projection portion being arranged to abut on the plate-shaped member of the upper mold-mounting member,
• wherein said corrected Camper's plane-acquiring device comprises
• a strap member to be mounted on a head,
• a plane member suspended from the strap member, the plane member being arranged to be laid in a direction extending across a face of a patient, the plane member having a boomerang shape,
• a plane-measuring member provided substantially at a center of the plane member, and
• a weight suspended from a distal end of a string member attached to a center of a face side of the strap member.

An occlusion correction improvement method comprising:

• acquiring a plane parallel to a corrected Camper's plane obtained by correcting a Camper's plane of an upper model based on a gravitational pull and an inclination of a center of gravity of a patient, the upper model having a tooth model-shaped surface of a maxillary tooth row;
• forming an upper mold-mounting member that comprises an upper frame mountable on the upper model and a plate-shaped member attached to the upper frame so as to be parallel to the parallel plane;
• forming a lower mold-mounting member that comprises a lower frame mountable on a lower model having a tooth model-shaped surface of a mandible tooth row, and that also comprises an adjustment member attached to the lower model and provided with a pin-shaped projection portion that is movable in a lateral direction and in a vertical direction relative to the lower frame and that is capable of abutting on the plate-shaped member of the upper mold-mounting member;
• and
• correcting an occlusion, wherein the correcting of the occlusion includes at least one of adjustment of a position of the projection portion, adjustment of a position of the lower mold-mounting member relative to the upper mold-mounting member in the presence of a change of the relative position from a state in which the projection portion abuts on the plate-shaped member in a vicinity of a center portion thereof, and a pretreatment of excavation or prosthesis.