Comparative evaluation of the pontic shield technique versus whole tooth extraction on labial crestal bone resorption using cone-beam computed tomography in the maxillary anterior region: A randomized controlled clinical trial

采用锥形束计算机断层扫描技术对上颌前牙区唇侧牙槽嵴骨吸收进行桥体保护技术与全牙拔除术的比较评价：一项随机对照临床试验