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ملفات تعريف الارتباط المستخدمة
為什麼有的充填物會脫落？其主要原因有。
①繼發齲使充填物鬆動、脫落； ②嚴重齲壞，固位性能差； ③牙齒折斷，多發生在無髓牙； ④充填物折斷，多見於牙尖緊密接觸充填物的牙齒。
تعليقات