The skeletal and dental effects of two kinds of Herbst appliances

Conclusion Treatment with two types of Herbst appliance resulted in changes that improved sagittal skeletal and dental relations, regardless of growth. The control of vertical growth pattern did not depend on the type of the Herbst appliance is used; however, in cases of lack of space in the maxillary arch, the Herbst appliance with steel crowns was more efficient. (Source: Journal of the World Federation of Orthodontists)
MedWorm: Dentistry