Extruded permanent teeth (下圖) should be repositioned and splinted for 2 to 3 weeks. It normally takes the PDL fibers this period of time to reanastomose. Extruded permanent teeth with closed apices will undergo pulpal necrosis; therefore, root canal therapy should be initiated after the teeth are splinted. Extruded teeth with open apices have a chance to revascularize and maintain their vitality, so the decision to initiate therapy should be delayed until clinical or radiographic signs indicate necrosis...
Extruded permanent teeth (下圖) should be repositioned and splinted for 2 to 3 weeks. It normally takes the PDL fibers this period of time to reanastomose. Extruded permanent teeth with closed apices will undergo pulpal necrosis; therefore, root canal therapy should be initiated after the teeth are splinted. Extruded teeth with open apices have a chance to revascularize and maintain their vitality, so the decision to initiate therapy should be delayed until clinical or radiographic signs indicate necrosis.