Optimal sites for orthodontic anchor screw placement using panoramic images: risk of maxillary sinus perforation and contact with adjacent tooth roots during screw placement

ConclusionsSawtooth-like sinus depression had increased risk of maxillary sinus perforation, suggesting that OAS placement in this region should be avoided. In contrast, OAS placement between 6.5 and 8  mm from the alveolar crest is advisable in patients with funnel-like sinus depression and at a site >  8 mm from the alveolar crest in those with a non-depressed sinus.

Source: Progress in Orthodontics - December 8, 2021 Category: Dentistry Source Type: research