Non-extraction treatment of unilateral scissor bite and severe gingival recession at mandibular incisors

Abstract

Purpose: Herein, we report the case of a patient with skeletal Class I malocclusion, unilateral scissor bite, severe mandibular anterior crowding, and gingival recession, who underwent or thodontic treatment, involving arch expansion and dental root movement without tooth extraction. Case Report: A 19-year-old male patient visited the Depart ment of Orthodontics with complaints of crowding of teeth and malocclusion. To resolve the scissor bite of the right posterior teeth, we used a transpalatal arch for the upper teeth and a lingual arch for the lower teeth. Torque was applied to the TMA rectangular archwire to improve the root axis. Consequently, satisfactory occlusion and desirable horizontal and vertical relationships between the teeth were achieved. The root po sitions of the mandibular left central and lateral incisors were improved, and gingival recession was reduced. Conclusion: Scissor bite or posterior buccal crossbite can oc cur due to skeletal or dental factors, and if it is caused by dental factors, it can be corrected through orthodontic treatment. Gin gival recession has various causes; in some cases, orthodontic treatment can improve gingival recession and increase the success rate of gingival grafts.