Portelli M, Militi A, Cicciù M, Lo Giudice A, Cervino G, Fastuca R, Nucera R
Department of Biomedical and Dental Science, and of Morphological and Functional Images, Dental School, University of Messina, Messina, Italy.
Open Dent J. 2018 Sep 28;12:605-613. doi: 10.2174/1745017901814010605. eCollection 2018.
Class II malocclusion is the most common sagittal skeletal discrepancy, with a prevalent skeletal pattern of mandibular retrusion. The correction of mandibular retrusion with functional removable appliance needs a good patient's compliance; for this reason, some clinicians prefer to use no compliance apparatus.
Objective of the present therapy note is to demonstrate that the use of no compliance apparatus can provide a good correction of skeletal class II malocclusion.
In the present study, authors report a therapy note referred to a 10 years old patient, woman, affected by Class II, with mandibular retrusion and deep bite, treated in 2013 at the Dep. of Orthodontics of Messina University. An orthodontic treatment has been planned with the aim of stimulating mandibular growth; an Herbst appliance with a cantilever design, bonded on first maxillary and mandibular molars, has been used. After eleven months of functional therapy a bilateral molar class I have been obtained.
In the therapy note proposed, authors obtained a resolution of mandibular retrusion, a correction of overjet, overbite and dental crowding in both arches, and a bilateral molar and canine class I has been achieved.
Herbst appliance seems to be efficient in the correction of II Class Malocclusion, independently from patient's cooperation; moreover , early correction of Class II malocclusion with functional appliances produces several clinical advantages.
安氏II类错牙合是最常见的矢状骨面不调，常见的骨骼模式为下颌后缩。使用功能性可摘矫治器矫正下颌后缩需要患者良好的配合；因此，一些临床医生更倾向于使用无需配合的矫治器。
本治疗记录的目的是证明使用无需配合的矫治器可以有效矫正安氏II类骨性错牙合。
在本研究中，作者报告了一份治疗记录，该记录涉及一名2013年在墨西拿大学正畸科接受治疗的10岁女性患者，患有安氏II类错牙合，伴有下颌后缩和深覆牙合。计划进行正畸治疗以刺激下颌生长；使用了一种带有悬臂设计的Herbst矫治器，粘结在上颌和下颌第一磨牙上。经过11个月的功能治疗，获得了双侧磨牙I类关系。
在本治疗记录中，作者成功解决了下颌后缩问题，矫正了上下牙弓的覆盖、覆牙合和牙列拥挤，实现了双侧磨牙和尖牙I类关系。
Herbst矫治器似乎在矫正安氏II类错牙合方面有效，且无需患者配合；此外，使用功能性矫治器早期矫正安氏II类错牙合具有诸多临床优势。
