随着牙种植技术的发展,许多原来因自身牙槽骨骨量不足而不能进行牙种植的患者也可进行牙种植,并取得了良好的修复效果。上颌前牙区由于其临床位置及解剖特点,是最容易受外伤而导致牙缺失的部位。研究表明,有0.5%～16%的恒牙列受外伤导致牙齿脱落,而上颌中切牙是最频繁的。缺牙后牙槽突的吸收改形导致上颌前牙区骨量不足。 With the development of dental implant technology, many patients who could not perform dental implants due to their lack of bone in their alveolar bone can also be implanted with dental implants and have obtained good repairing effects. Due to its clinical location and anatomic features, the maxillary anterior region is the most vulnerable to tooth trauma. Studies have shown that 0.5% to 16% of permanent dentition trauma led to tooth loss, while the maxillary central incisors are the most frequent. Absorption and remodeling of the posterior alveolar process results in insufficient bone mass in the anterior maxillary.