Paulsen H U, Rabøl A, Sørensen S S
Department of Orthodontics, Copenhagen Municipal Dental Health Service, Denmark.
Eur J Orthod. 1998 Aug;20(4):369-74. doi: 10.1093/ejo/20.4.369.
Bone scintigraphy results were compared with changes shown on orthopantomographic radiographs in a patient with facial asymmetry, before, during, and after Herbst treatment, and followed up with control of growth activity in the temporomandibular joints (TMJs) after long-term retention. The present study showed that new bone formation (modelling) was initiated asymmetrically in TMJs during treatment. The results indicate that late development of right/left asymmetry in the occlusion can be corrected and normalized using the Herbst appliance therapy, stimulating a differentiated 'catch up' growth (modelling) in the TMJ with condyles. After treatment, original growth with asymmetric activity in the TMJ was re-established. This growth activity may re-establish the asymmetry in the sagittal occlusion and the face of the patient. It is therefore recommended that the occlusion should be maintained with an appliance which stabilizes the occlusion until cessation of the primary, endochondral growth.
对一名面部不对称患者在Herbst治疗前、治疗期间和治疗后，将骨闪烁扫描结果与曲面断层X线片显示的变化进行比较，并在长期保持后对颞下颌关节（TMJ）的生长活动进行随访控制。本研究表明，治疗期间TMJ中不对称地开始了新骨形成（塑形）。结果表明，使用Herbst矫治器治疗可以纠正和正常化咬合中左右不对称的后期发展，刺激TMJ髁突有差异的“追赶”生长（塑形）。治疗后，TMJ中不对称活动的原始生长得以重新建立。这种生长活动可能会重新建立患者矢状位咬合和面部的不对称。因此，建议使用稳定咬合的矫治器保持咬合，直到软骨内原发性生长停止。
