In general, shedding of the deciduous teeth is due to the progressive resorption of their roots.The resorption process is not continuous;it alternates with periods of rest and repair.

• 一般而言，乳牙的脱落乃是它们的根部不断地进行吸收所产生的结果，但整个过程并非一直持续不停的，在换牙之间会交替地进行修复与休眠。