PROBLEM TO BE SOLVED: To address the necessity to determine a position where articulation is stabilized by performing prosthetic treatment (bridge or dental prosthesis) for the molar loss and bite raising for the infraocclusion, because most of patients with the ventricular extrasystole (bigeminy and trigeminy) have the molar loss or the infraocclusion.SOLUTION: An occluzer (an articulator) is used to acquire a center of gravity of occlusion. When the center of gravity of the occlusion is at an intersection (a center of gravity of a palate) of a line formed by connecting left/right-side first molar mesiolingual cusps and a midline of the palate, it reveals that the ventricular extrasystole (bigeminy and trigeminy) disappears. However, in a case where both-side first molars are lost, when a center of gravity position of occlusion is moved to the measured center of gravity position of the palate, the ventricular extrasystole (bigeminy and trigeminy) disappears.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】心室期外収縮（二段脈，三段脈）が発症している患者は、多く臼歯部欠損か低位咬合である。臼歯部欠損は補綴処置（ブリッヂか義歯）し，低位咬合では咬合挙上により咬合が安定する位置を決定することが必要である。【解決手段】オクルーザー（咬合機）を使用し，咬合重心を求める。咬合重心が左右側第一大臼歯近心舌側咬頭を結ぶ線と口蓋正中との交点（口蓋重心）にあるとき，心室期外収縮（二段脈，三段脈）が消失することが判明した。しかし両側の第一大臼歯が欠損している場合は，計測した口蓋重心位に咬合重心位を移動させると，心室期外収縮（二段脈，三段脈）が消失する。【選択図】なし
