Kokich V G, Nappen D L, Shapiro P A
Am J Orthod. 1984 Aug;86(2):89-94. doi: 10.1016/0002-9416(84)90300-2.
Fractured, congenitally missing, or avulsed maxillary incisors can often jeopardize the esthetic appearance of the remaining maxillary anterior teeth after orthodontic treatment. In many cases the unesthetic appearance is related to the irregular clinical crown lengths of either the fractured teeth or those that have been substituted for the missing teeth. The results of five cases with either fractured or traumatically avulsed central incisors are reported. Selective tooth intrusion and restorative techniques were used during the finishing stages of orthodontic treatment to improve the final esthetic result. The advantages and disadvantages of the intrusion technique are discussed.
上颌中切牙折断、先天性缺失或脱位通常会在正畸治疗后影响剩余上颌前牙的美观。在许多情况下，不美观的外观与折断牙齿或替代缺失牙齿的临床冠长度不规则有关。本文报告了5例中央门牙折断或外伤性脱位的病例。在正畸治疗的最后阶段采用了选择性牙齿压低和修复技术，以改善最终的美观效果。文中讨论了压低技术的优缺点。
