Impaction risk increases significantly with each year of late third molar development in Western Canadian youths

Late-developing M3s are statistically more likely to become impacted. Clinical monitoring of M3 development from preadolescence is suggested. As early-developing M3s present minimal impaction risk, they are less likely to require prophylactic removal. This work provides foundational new insights into molar odontogenesis alongside practical information to help develop guidelines for managing patients with developing M3s.