Efficacy of different treatment methods under endoscope for the ostium of maxillary sinus

Objective To evaluate the influence of the nasal endoscopic surgery with different methods for the ostium of the maxillary sinus on postoperative sinus opening and function of cilia. Methods Eighty cases of typeⅠ in stage two or three bilateral maxillary sinusitis were enrolled in this study. In all patients,only the maxillary sinus lesions around the ostium were removed at one side after the resection of uncinate process,and the ostium of maxillary sinus at contralateral side was expanded. The sinuses opening and cilia's function were observed in different period after the surgery. Results The opening rate of maxillary sinus was 97. 5% at the side without expanding the ostium after 6 months,and 77. 5% at the contralateral side. The blue stain rate at the side without expanding the ostium was 87. 5%,and the blue stain rate at the other side was 62. 5%,and there was significant difference( P 0. 01). Conclusion Endoscopic surgery for the type Ⅰ chronic maxillary sinusitis should focus on dealing with the lesions around the natural ostium,and reduce the injury as much as possible,which is helpful for avoiding the sinus atresia after operation and keeping the normal drainage of the maxillary sinus.