下颌智齿冠周炎是发生于青年期的一种常见口腔疾病。它是指牙齿冠部的牙龈组织受了组织机械刺激或细菌激惹而引发的炎症现象。临床多见于智齿冠部周围，以下颌者最为多见。本病一年四季均可发生，以春夏季为多见。我院口腔科1986年至1988年，在7873个门诊病例中，有冠周炎病人3 Jaws Wisdom pericoronitis is a common oral disease that occurs in adolescence. It refers to the crown of the tooth gum tissue affected by tissue mechanical stimulation or bacterial irritation caused by inflammation. More common in the wisdom of clinical crown around the crown, the most common jaw. The disease can occur throughout the year, more common in spring and summer. Stomatology in our hospital from 1986 to 1988, in 7873 outpatient cases, patients with pericoronitis 3