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ملفات تعريف الارتباط المستخدمة
牙根縱裂的病因是什麼?牙根縱裂的病因主要有:
①慢性持續性創傷合。如側方合創傷、牙尖陡、磨耗不均、根分叉暴露都與患牙承受合力過大有關。②牙根縱裂可能與牙根發育上的缺陷有關。③無髓牙是牙根縱裂的又一因素。
《貌美牙為先,但你的牙齒能使你齒白七分俏么?》
《何謂惡性淋巴瘤?》
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