Two Cases of Inverted Ectopic Teeth in Maxillary Sinus

Teeth, impacted at unusual positions far from their normal anatomical location, are called ectopic teeth [1]. An extra tooth with an abnormal morphology is usually called as supernumerary tooth, whereas it is called as supplementary tooth if the morphology is normal [2,3]. The reported prevalence of supernumerary teeth varies between %0,45 and %3 and they might erupt ectopically. There is female predominance with a ratio of 2:1 [2]. Ectopic teeth may erupt in various sites such as mandibular condyle and coronoid processes, maxillary sinus, orbital floor, palate, facial skin, nasal cavity, inferior nasal concha and oropharynx. Most supernumerary teeth are located in the anterior maxillary region and ectopic eruption of teeth in maxillary sinus is rare [3-6]. The present paper reports one inverted supernumerary and one inverted supplemental ectopic tooth located in maxillary sinuses.