Orthodontic Movement through the Maxillary Sinus

Abstract

The maxillary sinus (MS) , the largest of the paranasal sinuses, begins to develop at the ethmoidal infundibulum in the third month of fetal life. The maxillary sinus floor (MSF) consists of a thin bony plate covered with a layer of mucosa. Intrusion or bodily movement of the teeth across the sinus floor by orthodontic treatment have been shown to cause moderate apical root resorption and higher degree of tipping. Therefore, the aim of this review was to investigate orthodontic tooth movement through the maxillary sinus.