A 62-year-old man with generalized chronic periodontitis returns with chief complaint of loose tooth at #11 (Fig.1).  Although a buccal fistula (Fig.1 <) is closer to #12 than to #11, percussion is more severe at #11 than 12.  62岁男牙周炎，左上尖牙（11）松动疼痛（图一）。

Immediate Repair     Last     Next  3 Xin Wei, DDS, PhD, MS 1st edition 07/03/2020, last revision 01/23/2021