- Primary teeth are more likely to be displaced than fractured following traumatic injuries due to their thinner, more elastic alveolar bone and physiological resorption. - Immediate effects on primary teeth include concussion, displacement through intrusion, extrusion or avulsion, and rare crown-root fractures. Indirect effects can impact unerupted permanent teeth and cause conditions like hypoplasia, hypomineralization, or dilaceration. - Treatment depends on the specific injury but may include no treatment, extraction, pulpectomy, or repositioning displaced teeth when possible.