Vogel R E, Wheeler S L, Casellini R C
Implant Dent. 1999;8(4):390-5. doi: 10.1097/00008505-199904000-00012.
Parents and dentists are forced to make a decision early in a young patient's life when it is learned that the lateral incisors are missing. For many years the treatment has been to either move the cuspids into the lateral incisor sites or retain the teeth in their natural environment and restore the defect with a bonded or fixed bridge. With the advent of new designs in dental implants and their abutments, it is possible to consider replacing missing single teeth with implant-borne prostheses. Often-times, because of the limited residual bone and proximity of adjacent roots, placing conventional cylinder or screw-type implants is difficult. This article demonstrates the advantages of using a tapered-step implant, immediate one-stage surgery, and temporization in replacing congenitally missing laterals.
当得知年轻患者的侧切牙缺失时，家长和牙医不得不在患者幼年时就做出决定。多年来，治疗方法要么是将尖牙移至侧切牙位置，要么是让牙齿留在其自然位置，并用粘结桥或固定桥修复缺损。随着牙科种植体及其基台新设计的出现，可以考虑用种植体支持的修复体替代缺失的单颗牙齿。通常，由于剩余骨量有限以及相邻牙根的接近，植入传统的圆柱型或螺丝型种植体很困难。本文展示了使用锥形阶梯式种植体、即刻一期手术和临时修复体来替代先天性缺失侧切牙的优势。
