歯し列れつ弓きゅうMeanings1noundental archTechnical term in dentistry and anatomy for the curved structure formed by the teeth in the jaw.矯きょう正せい治ち療りょうでは歯し列れつ弓きゅうの形かたちを整ととのえることが重じゅう要ようです。In orthodontic treatment, it is important to adjust the shape of the dental arch.