Antral retention cyst is a benign pathology that is usually observed in the floor of the maxillary sinus. Although its etiology is not known, it is mostly asymptomatic and incidentally found. In cases of posterior edentulism with insufficient residual alveolar bone, the maxillary sinus must be in a normal physiology for bone grafting and dental implant treatment. In this study, the clinical and radiographic features of three antral retention cyst cases are presented and the multidisciplinary treatment approach is reported.