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什麽是牙釉質發育不全?牙軸質發育不全.是指在牙發育期間因全身疾患、營養缺乏、發熱性疾病和低鈣血症導致牙損傷肘,使牙袖質發育礦化發生障 礙而遺留的永久性缺陷?
《兒童吮手指對牙齒發育有什麽危害?》
《牙縫大,漏財?如何彌補?》
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