Oroantral communication. Epicritical study of 175 patients, with special concern to secondary operative closure.

A total of 175 patients with oroantral communications have been investigated in a follow-up study. The results show the importance of a fast and reliable diagnosis, and therapy which can save the patients from more radical treatment. Operation of the maxillary sinus should be avoided if conservative treatment of sinusitis is possible, or at least careful operation techniques should be chosen.