Farahani Mohammad, Farimani Reza Morvaridi, Eskandarloo Fatemeh
Department of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Case Rep Dent. 2023 Sep 25;2023:8833818. doi: 10.1155/2023/8833818. eCollection 2023.
This case report describes the successful 3D treatment of a patient with a narrow maxilla and a severe class II open bite using a combination of a bonded hyrax expander, infrazygomatic crest mini-implants, and the multiloop edgewise arch-wire (MEAW) technique. A 14-year-old female with a thumb-sucking habit in childhood, presented with a severe open bite, a convex profile, and an obtuse nasolabial angle. Diagnosis revealed a skeletal Class II open bite with moderate crowding in the maxillary and mild crowding in the mandibular arch. Treatment objectives included eliminating the open bite, achieving normal overbite and overjet, and improving upper incisor visibility. Treatment involved the use of a bonded rapid palatal expansion device, mini-implants for maxillary intrusion, fixed appliances, vertical elastics, and a MEAW. Treatment results showed resolution of the open bite, improvement in overbite and overjet, achievement of Class I molar and canine relationships, and improved upper incisors visibility. Fixed appliances were used for the whole 22-month therapy period, and post-treatment records demonstrated that the treatment's objectives were met.
本病例报告描述了一名上颌狭窄且患有严重安氏II类开（牙合）的患者，采用带环式Hyrax扩弓器、颧下嵴微型种植体和多曲方丝弓（MEAW）技术联合进行三维治疗并获得成功的案例。一名14岁女性，童年时有吮拇指习惯，表现为严重开（牙合）、凸面型和钝性鼻唇角。诊断显示为骨骼型安氏II类开（牙合），上颌中度拥挤，下颌弓轻度拥挤。治疗目标包括消除开（牙合）、实现正常覆（牙合）覆盖以及改善上前牙的可见度。治疗采用了带环式快速腭扩展装置、用于上颌压低的微型种植体、固定矫治器、垂直牵引橡皮圈和MEAW技术。治疗结果显示开（牙合）得到解决，覆（牙合）覆盖得到改善，磨牙和尖牙达到I类关系，上前牙可见度提高。在整个22个月的治疗期间均使用了固定矫治器，治疗后记录表明治疗目标得以实现。
