Provided is an artificial anterior tooth capable of grinding the food. The lingual side of an artificial anterior is provided with a protuberance for forming a frictional surface dented in an arch shape as seen from the mesiodistal direction, and the labial side of an opposite artificial lower tooth is provided with a protuberance for forming a sliding surface abutting on the frictional surface and sliding on the frictional surface by sliding motion of upper and lower jaws.