Yelampalli M R, Rachala M R
Department of Orthodontics, SVS Institute of Dental Sciences, Mahabubnagar, Andhra Pradesh, India.
J Indian Soc Pedod Prev Dent. 2012 Jan-Mar;30(1):78-84. doi: 10.4103/0970-4388.95590.
Timing of orthodontic treatment, especially for children with developing class III malocclusions, has always been somewhat controversial, and definitive treatment tends to be delayed for severe class III cases. Developing class III patients with moderate to severe anterior crossbite and deep bite may need early intervention in some selected cases. Class III malocclusion may develop in children as a result of an inherent growth abnormality, i.e. true class III malocclusion, or as a result of premature occlusal contacts causing forward functional shift of the mandible, which is known as pseudo class III malocclusion. These cases, if not treated at the initial stage of development, interfere with normal growth of the jaw bases and may result in severe facial deformities. The treatment should be carried out as early as possible for permitting normal growth of the skeletal bases. This paper deals with the selection of an appropriate appliance from the various current options available for early intervention in developing class III malocclusion through two case reports.
正畸治疗的时机，尤其是对于患有正在发展的III类错牙合畸形的儿童，一直存在一定争议，对于严重的III类病例，确定性治疗往往会延迟。在某些特定情况下，患有中度至重度前牙反牙合和深覆牙合的正在发展的III类患者可能需要早期干预。III类错牙合畸形在儿童中可能是由于内在的生长异常，即真性III类错牙合畸形，或者是由于早接触导致下颌向前功能性移位，这被称为假性III类错牙合畸形。这些病例如果在发育初期未得到治疗，会干扰颌骨基底部的正常生长，并可能导致严重的面部畸形。为了使骨骼基底部正常生长，应尽早进行治疗。本文通过两个病例报告，探讨了从当前各种可用选项中选择合适矫治器对正在发展的III类错牙合畸形进行早期干预的问题。
