[A clinical study on improved herbst appliance].
OBJECTIVE
To observe the clinical effect of improved Herbst appliance.


METHODS
Twelve patients with Class II malocclusion were selected and treated with improved Herbst appliance,The effects were observed and assessed after 6 to 8 months. The advantages and steps of this technique were also described.


RESULTS
All the cases had satisfied and effective results with the help of improved Herbst appliance. The change of the ANB angle had statistical difference.


CONCLUSIONS
Improved Herbst appliance is an be effective fixed functional appliance, it can used in adolescents (in the permanent dentition),postadolescents and young adults, instead of some orthognathic surgery especially in borderline skeletal Class II. This technique can easily be used in dental clinic.
Gong
Yao
Y
Department of Orthodontics, Ninth People's Hospital, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
Shen
Gang
G
D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D017289:Orthodontic Appliances, Functional