下颌中切牙-下颌平面角incisal mandibular plane angle, IMPA
切角corner cut【自】;incisal angle【口腔】;tangential angle【数】
切的incisal
鸥翼切平面gull wing incisal plane
切端外展隙incisal embrasure
切缘cutting edge【解剖】;incisal edge【解剖】;incisal margin【解剖】
切龈融合incisal-gingival blend
切导针incisal guidance pin