Abstract
The pulp has a risk of circulatory disturbance as ischemia or hemorrhage, and tissue degeneragtion might occurs after traumatic luxated injuries. Bacteria could inbade the pulp and periodontal tissue via traumatic incomplete/complete crown fractures, and cause the pulpitis, periodontitis, and pulp necrosis. Hence, these fractured tooth must be sealed or capped to prevent subsequent pulpal infection, pulpal inflammation and subsequent necrosis. For pulp exposure, pulp capping can be used as prompt treatment in 24 hours. But partial pulpotomy is recmmended for it's high success rate within 7 days after trauma.Early detection and prompt treatment of pulp necrosis is effective for preventing the pathological root resorption. Surgical endodontics can obstruct a part of progressive root resorprion and apical periodontitis with horizonral root fracture. The incidence of fractures is markedly high in endodontically treated immature teeth. The appropriated resin composite and bonding agent for the restoration of the access cavities to prevent crown-root fracture are recommended.For the early detection of pathological changes after traumatic injuries, the longitudinal perodical follow-up and objective diagnoses are proposed.