Association between dental extraction after radiotherapy and osteoradionecrosis: A multi‐centre retrospective study

Radiotherapy (RT) carries a substantial risk for the development of osteoradionecrosis (ORN) of the jaw. This study was performed to investigate the relationship between dental extractions after RT and the development of ORN.Thirty-two patients with head and neck cancer who underwent tooth extraction after RT were investigated for correlations between the development of ORN and various factors.Postextraction ORN was diagnosed in 12 (12.1%) teeth...