Johnson W T, Goodrich J L, James G A
Oral Surg Oral Med Oral Pathol. 1985 Oct;60(4):420-7. doi: 10.1016/0030-4220(85)90266-x.
Successful treatment of the avulsed tooth with immature root development is dependent on both pulpal and periodontal responses. The pulpal reaction is often one of revascularization with subsequent replacement of the necrotic pulp tissue. Continued root development and further calcification of the existing root structure are often seen with revitalization. The periodontal response to avulsion is dependent on the vitality of the periodontal ligament cells on the root surface. Normal healing occurs when the vitality is maintained, while replacement resorption results when the vitality is lost. Replantation after a short extra-alveolar period appears to provide the best prognosis for long-term retention of the avulsed tooth.
对于牙根发育未成熟的脱位牙，成功治疗取决于牙髓和牙周的反应。牙髓反应通常是血管再生，随后坏死牙髓组织被替代。随着牙髓活力恢复，常可见牙根持续发育和现有牙根结构进一步钙化。牙周对脱位的反应取决于牙根表面牙周膜细胞的活力。当活力得以维持时会发生正常愈合，而当活力丧失时则会导致替代性吸收。在短时间牙槽外时间后再植，似乎为脱位牙的长期保留提供了最佳预后。
