FOLLICULAR CYST DEVELOPED FROM DYSTOPIAN MOLAR IN MAXILLARY SINUS CAVITY

The article presents the rarest clinical case of third type dystopia of the upper right first molar. During the period of embryogenesis, due to disorders provoked by factors unknown to us, 16 tooth embryos were developed in the maxillary sinus. Available literature sources depict the location of dystopian teeth in the bone tissue of the lower or anterior wall of the maxillary sinus. The case is interesting due to the clinical case of dental dystopia directly in the sinus, which has not been found in the literature so far. Our interest in a particular clinical case was compounded by the fact that, except the rare case of third type dystopia, a large follicular cyst, developed as a result of metaplasia of the embryon of a dystopian tooth, was found in the maxillary sinus, completely filled with the cyst. A classic antrotomy was performed. Due to the gigantic size of the cyst, it was emptied of its contents by puncture, after which the membrane was dissected and the dystopian molars in the cyst cavity were removed. The cyst membrane was separated from the bony walls of antrum and excised as a single, complete block.