Relation between the form of antral floor and cyst in maxillary sinus

We studied therapy methods in relation to the form of the antral floor and cysts in maxillary sinus. Data for this study derived from the orthopantomography of 24 patients with cysts in the maxillary sinus. The age of patients ranged from 20 to 49. There are three types of antral floor in terms of the form of the antral floor and the dental root apex: Free type, Contact type and Convexity type. Free type: the antral floor is free from the dental root apex. Contact type: the antral floor is clos to the dental root apex. Convexity type: the convexity of the antral floor toward the lower side is between the dental root and the neighboring dental root. We studied therapy methods in the relation to these three types of antral floor and cysts in the maxillary sinus. Cysts in the maxillary sinus of the free type numbered 7 cases, cysts in the maxillary sinus of contact type 8 cases, and the cysts in the maxillary sinus of convexity type 9 cases. Symptoms vanished in the cysts in the maxillary sinus of the free type for 3 or 4 weeks, but symptom didnot vanish in 2 cases of cysts in the maxillary sinus of contact type, or in 7 cases of cysts in the maxillary sinus of the convexity type, because of the cysts' large size. So, we enucleated the cysts in the 7 cases of the convexity type and the 2 cases of the contact type. The origin was the convexity of the antral floor toward the lower side in the 7 cases of cysts in the maxillary sinus of the convexity type. The enucleation of the cysts in the maxillary sinus of the convexity type ocurred more often than with cysts in the maxillary sinus of the contact type.