The quantity of ache cauterization of the ancient ivory from Jinsha and fresh ivory are higher than the savage apatite, and the quantity of alkali cauterization of the ancient ivory and fresh ivory are lower than the savage apatite.

• 成都金沙古象牙和新鲜象牙的酸腐蚀量比天然磷灰石高，碱腐蚀量比天然磷灰石的低。