35頭の犬における異所性萌出に関するレトロスペクティブスタディ

A Retrospective Study of Ectopic Eruption in 35 Dogs.

抄録

異所性萌出とは、歯の発育と萌出に障害が生じ、萌出歯または非萌出歯が解剖学的に予期せぬ場所に存在することである。このレトロスペクティブケースシリーズは、犬の異所性萌出に関連する位置、位置、形態、および臨床症状について記述している。2017～2020年の間に、3つの臨床診療所で35頭の犬（46歯）が異所性萌出と診断された。症例は、位置、発育・萌出状況、臨床徴候、結果、実施した治療の観点から説明した。収集したデータを統計的に分析し、起こりうる影響を確定した。その結果，評価された症例の異所性萌出には永久歯が含まれ，主に上顎に位置し，ほとんどが未萌出であることがわかった．また、下顎に位置する歯は上顎に位置する歯よりも有意にインパクトが大きかった。本研究では，叢生・不正咬合（39.1%），顔面腫脹（8.6%），歯周病（8.6%）は異所性萌出と関連しており，その結果，大多数（65.2%）で治療が必要であると結論づけた．

Ectopic eruption results from a disturbance in tooth development and eruption, leading to an erupted or non-erupted tooth being in an unexpected anatomical location. This retrospective case series describes the location, position, form, and clinical signs associated with ectopic eruption in dogs. Thirty-five dogs (46 teeth) were diagnosed with ectopic eruption at three clinical practices during 2017-2020. The cases were described in terms of the location, the development and eruption status, the clinical signs, the consequences, and the treatment performed. The collected data were statistically analyzed to establish possible ramifications. The results showed that the ectopic eruption in the evaluated cases involved permanent teeth, mainly located in the maxilla, and mostly unerupted. Those located in the mandible were significantly more impacted than those located in the maxilla. This study concluded that tooth crowding and malocclusion (39.1%), facial swelling (8.6%), and periodontal disease (8.6%) were associated with the presence of ectopic eruption, and consequently, treatment was required in the majority (65.2%) of cases.