Primary root resorption is a physiological event for the primary teeth and plays an important role during normal replacement procedure.
乳牙根吸收是一种生理现象，在乳牙的正常替换过程中具有重要意义。
Primary root resorption is a physiological event for the primary teeth and plays an important role during normal replacement procedure.
乳牙根吸收是一种生理现象，在乳牙的正常替换过程中具有重要意义。
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