Concerns of orthodontic patients during the COVID-19 quarantine period.

During COVID-19 quarantine, orthodontic patients demonstrated a low frequency of orthodontic appliance interference in daily life, and most of them reported a maintenance of oral hygiene habits. The frequency of appliance related pain and breakage was 16.67% and 23.33%, respectively. Patients' main concern during the quarantine period was the fear of getting sick and the uncertainness about the extension of the quarantine period.