年轻恒牙的外伤治疗  

Dental trauma treatment of immature permanent teeth

作　　者：薛亮[1] 龚怡[1] 

机构地区：[1]首都医科大学附属北京口腔医院口腔急诊科,北京100050

出　　处：《中国实用口腔科杂志》2016年第7期398-403,共6页Chinese Journal of Practical Stomatology

摘　　要：在许多国家,牙外伤已经严重影响着青少年的口腔健康,外伤所累及的年轻恒牙在形态和结构上尚未完全发育成熟,根尖孔开放,髓腔宽大,根管壁薄。当年轻恒牙发生冠折和脱位性损伤时,治疗方法的选择对其预后显得尤为重要。年轻恒牙的牙本质小管比成熟恒牙的粗大,外伤冠折累及牙本质时,细菌容易进入牙本质小管感染牙髓;牙本质长期暴露,可造成牙髓坏死和牙冠变色。年轻恒牙外伤后应尽量保存暴露的活髓,选择氢氧化钙行盖髓术或活髓切断术;年轻恒牙即便发生牙髓坏死,也应选择根尖诱导形成术,促进牙根继续发育完成。Traumatic dental injuries, the most serious dental public health are challenging among youth in many countries. The majority of accidents Mfect adolescents, often when root development of the injured teeth is not completed. Crown fractures and luxations of immature permanent teeth are the most commonly occurring of all dental injuries. The maturity of the tooth is of utmost importance in the choice of treatment. Treatment planning and followup are important for improving a favorable outcome. Crown fractures involving dentin result in exposure of dentinal tubules to the oral environment. Bacteria may penetrate the tubules and cause inflammation in the underlying pulp. When deeply exposed dentin is left unprotected over a longer period of time, the pulp may become necrotic and the crown discolored. The treatment of immature permanent teeth with calcium hydroxide may remove bacteria from the fracture surface and seal off the exposed dentinal tubules by deposition of reparative dentine. The purpose of the endodontic procedure treatment with calcium hydroxide is to prevent development of inflammatory resorption and achieve healing of periradicular tissues.

关 键 词：年轻恒牙 牙外伤 治疗 预后 

分 类 号：R78[医药卫生—口腔医学]