作者用软的聚甲基丙烯酸甲酯修复口腔上颌窦瘘效果良好。聚甲基丙烯酸甲酯板是用塑料粉及液体按比例混合,在面团期将其表面复盖玻璃纸放在两玻璃板间,压成约2mm厚的塑料片,10分钟后,两玻璃板间的塑料凝固成软塑料片。将塑料片浸泡于消毒液中至少24小时备用。在瘘管口周围沿牙槽嵴边缘作切口,颊侧及腭侧切口延伸至邻牙颈部。在无牙患者 The authors used soft polymethylmethacrylate to repair oral maxillary sinus fistulas. Polymethylmethacrylate plate is mixed with plastic powder and liquid in proportion, the surface of the dough during the cellophane covered glass between two glass plates, pressed into about 2mm thick plastic sheet, after 10 minutes, between the two glass plates The plastic solidified into a soft plastic sheet. Soak the plastic sheet in the disinfectant for a minimum of 24 hours. Around the mouth of the fistula along the edge of the alveolar ridge for incision, palatal and palatal incision extends to the adjacent teeth neck. In toothless patients