Zero moment adjuster

A zero moment adjuster, comprising:

• a base frame having a pair of left and right side frames arranged along both sides of the head of a patient and a lateral frame connecting between the pair of left and right side frames;
• face-bow mounting parts attached to the side frames;
• a face bow, being detachably mounted on the face-bow mounting parts;
• a mouthpiece mounted on the face bow to be inserted into the buccal cavity of the patient;
• a fixing section for fixing the face bow on the face-bow mounting parts at a prescribed mounting angle, being detachably fitted to the face-bow mounting part;
• earpiece mounting parts installed at the side frames;
• earpieces mounted on the earpiece mounting parts;
• a pad part for supporting the base frame to be applied in the neighborhood of between the eyebrows of the patient, being provided in a center portion of the lateral frame;
• and
• a reference point indicating part for indicating an occlusion force concentration portion set in the neighborhood of the nasion of the patient, being provided in the center portion of the lateral frame, wherein
• the mouthpiece is formed in the shape of a curved surface along an occlusion spherical surface whose center is a point on an occlusion line passing through the occlusion force concentration portion and being parallel to the side frames, and
• the prescribed mounting angle is an angle designed to allow the mouthpiece to be positioned on an occlusion curved surface within the buccal cavity.