A case of skeletal mandibular prognathism in which due to lateral incisor root resorption caused by impacted maxillary canines on both sides,lateral incisors on both sides were extracted and the canines were arranged in the side incisor area.
Summary.In this case,marked root resorption of maxillary incisors on both sides due to impaction of maxillary canines on both sides was observed.Treatment for impacted maxillary canines includes induction in the row of teeth using fenestration and traction,extraction,transplantation,observation,and so on.It is necessary to select a method of treatment taking into account the position of the crowns and roots of the impacted teeth,the amount of movement in the direction of traction,and the effect on neighboring teeth and periodontium,as well as the degree of invasiveness and the prognosis.In this case,in the first stage of treatment,the maxillary lateral incisors on both sides were extracted and fenestration and traction of the maxillary canines on both sides was performed.Subsequently,observation was conducted till the end of the growth spurt.However,because vigorous forwards growth of the mandible was observed,at the start of the second stage of treatment,skeletal mandibular prognathism accompanying loss of the maxillary lateral incisors on both sides was diagnosed.In the second stage of treatment it was decided that surgical orthodontic treatment would be performed to improve the chief complaint.However due to the patient’s desire,surgical orthodontic treatment employing osteotomy of the mandible in isolation was performed.It was feared that performing Angle Class II finishing conducted with extraction of maxillary lateral incisors and no extraction of mandibular teeth would result in the amount of recession of the mandible becoming large and retraction.Therefore,treatment consisting of extraction of mandibular second premolar teeth and Angle Class I finishing was performed,and the canines on both sides were arranged in the lateral incisor area.We report that as a result of this treatment,a favorable treatment result and stable post–treatment progress were obtained.
雑誌名
松本歯学
雑誌名(英)
Journal of the Matsumoto Dental University Society
上顎両側埋伏犬歯に起因する側切歯歯根吸収により両側側切歯を抜歯し,側切歯部に犬歯の排列を行った骨格性下顎前突症例
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