上顎犬の切除不能症...術後レビュー

The unerupted maxillary canine--a post-surgical review.

• Ian O'Dowling

抄録

上顎犬歯の未破裂衝撃歯の外科的露出のために紹介された 685 例の患者の矯正記録を調査した．この疾患は男性よりも女性に多く、2:1よりもわずかに少なかった。インパクトを受けた歯の口蓋唇比は3:1であった。すべての歯が開放外科的手技で露出し、98％の症例で歯が萌出し、歯列矯正的に整列していた。2%の症例ではアンキローシスが発生し、その後抜歯された。上顎犬歯に関連したペグ状の側切歯の存在は、全体の3.4%であり、先天性欠如は1.7%に認められた。

The orthodontic records of 685 patients referred for surgical exposure of an unerupted impacted maxillary canine tooth were examined. The condition was more common among females than males, slightly less than 2:1. The impacted teeth had a palatal-labial ratio of 3:1. All of the teeth were exposed using the open surgical technique and in 98% of cases the tooth erupted and was orthodontically aligned. In 2% of cases ankylosis occurred and the teeth were subsequently extracted. The presence of peg-shaped lateral incisors associated with the impacted maxillary canine tooth was 3.4% of the total number of impacted teeth and congenital absence was found in 1.7% of impacted teeth.