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在门诊经常遇到以下病症:上颌中切牙和侧切牙的年轻恒牙在牙根未完全形成时因受外伤而折断,经久则坏死;四个第一恒磨牙在牙根未完全形成时就被龋坏。以往各地对这类症例的处置大都是沿用旧疗法,即前牙拔髓根治,后牙切断充填。近年来国外对这一类症例在治疗术式上有了很大进展。新疗法已能使经治的年轻恒牙在治疗后尽量恢复正常功能。对此,本文拟作一专题综述介绍如下。一、牙根未完全形成之年轻恒牙的
In the clinic often encounter the following conditions: the maxillary central incisor and lateral incisor young permanent teeth in the root is not fully formed due to trauma and fracture, prolonged necrosis; four permanent molars in the root is not fully formed when the caries Bad. In the past, most cases of such cases were treated according to old therapies, that is, the anterior pulp was removed and the posterior teeth were cut off and filled. In recent years, foreign countries have made great progress in the treatment of this type of cases. New therapy has been able to make the treatment of young permanent teeth in the treatment as soon as possible to restore normal function. In this regard, this article is intended to make a summary of the topic described below. First, the root is not fully formed young permanent teeth