Noroozian Mohammad, Merati Mohsen, Heravi Farzin, Shafaee Hooman
Dept. of Orthodontics, Student Research Committee, School of Dentistry, Ilam University of Medical Sciences, Ilam, Iran.
Dept. of Orthodontics, School of Dentistry, Tehran Shahed University of Medical Sciences, Tehran, Iran.
J Dent (Shiraz). 2022 Dec;23(4):511-519. doi: 10.30476/DENTJODS.2022.91156.1557.
Treatment of impacted canine teeth is a challenge for most clinicians, especially in adult patients with high risk of ankylosis. Conventionally, leveling and alignment of the teeth are first performed and after heavy arch wire placement in slot of brackets, de-impaction force is applied. However, this method has some disadvantages, such as inability to detect ankylosis of the impacted tooth until load application, risk of root resorption of incisors or necrosis of them, distortion of dental arch form, the need for early extraction of primary canines, which is esthetically unfavorable for patients, and long-term presence of fixed orthodontic appliances in the oral cavity. This study aims to introduce approach that can be easily used by busy clinicians to guide palatally impacted canines into the dental arch using a cantilever spring supported by two palatal miniscrews prior to the initiation of fixed orthodontic treatment, and report some cases treated with this technique. This technique does not have the shortcomings of the conventional technique. In addition, the total duration of treatment, and duration of presence of orthodontic appliances in the oral cavity are shorter than the conventional technique. In addition, is less technique sensitive and do not need time complex and time consuming wire bending.
对于大多数临床医生来说,治疗埋伏阻生犬齿是一项挑战,尤其是在有高度牙根粘连风险的成年患者中。传统上,首先进行牙齿的排齐整平,在将粗弓丝放入托槽槽沟后,施加去阻生力量。然而,这种方法有一些缺点,比如在施加负荷之前无法检测到埋伏阻生牙的牙根粘连,存在切牙牙根吸收或坏死的风险,牙弓形态变形,需要早期拔除乳尖牙,这对患者美观不利,以及口腔中长期存在固定正畸矫治器。本研究旨在介绍一种简便方法,忙碌的临床医生可以在开始固定正畸治疗前,使用由两个腭部微种植体支持的悬臂弹簧将腭侧埋伏阻生犬齿引导至牙弓,并报告一些采用该技术治疗的病例。该技术没有传统技术的缺点。此外,治疗总时长以及正畸矫治器在口腔内的佩戴时长均短于传统技术。另外,该技术对技术的敏感性较低,且不需要复杂耗时的弯丝操作。