Oral-maxillary sinus fistula repair

Oral maxillary sinus fistula is caused by displacement of the root during tooth extraction, or the wound is opened immediately after repairing oral maxillary sinus traffic; it may also occur after maxillary cyst surgery. Treating diseases: Indication 1. After maxillary sinus radical surgery, the incision does not heal for a long time, and the fistula is formed. Or the wound does not heal after tooth extraction, forming a fistula. 2. Congenital fistula. 3. Unexplained oral cavity - maxillary sinus fistula. Contraindications 1, there is skull base bone destruction or paranasal infiltration, cranial nerve damage or distant metastasis. 2, there are liver and kidney dysfunction, poor overall condition. Preoperative preparation 1. Try to find out the cause of fistula formation before surgery. Whether there is foreign body retention after the maxillary sinus surgery, whether the lower nasal passage "to the hole" is closed or narrow. 2. For the congenital and unexplained sputum tube iodized oil angiography to understand the overall situation. 3. Antibiotics control infection. Surgical procedure 1. Intensive expansion through the fistula, incontinence of the maxillary sinus, removal of foreign bodies, polyps, necrotic tissue and unhealthy mucosa. 2. Establish or improve the "hole" drainage of the lower nasal passage. 3. Flush with warm saline as a fistula. 4. Use a curette, a small sharp knife, an eye scissors, etc. to remove the tissue around the tendon, resulting in fresh wounds. 5. Take the buccal mucosa of the proximal fistula into a pedicled flap, which is more than 2 times larger than the fistula. 6. The sinus filled with iodoform gauze is taken out from the nose. 7. Mucosal flap suture. complication Incision delayed healing and wound infection.