Chincup therapy for a young woman with anterior displacement and obtuse angle of the mandible in Class I malocclusion.
BACKGROUND
Dolichofacial skeletal patterns are a challenge for the orthodontist. Even when treatment for a long-face patient begins before the adolescent growth spurt, excellent compliance is generally needed. The patient whose care is presented here started treatment at age 14.


RESULTS
The extraction of 4 premolars, rapid palatal expansion, and excellent compliance wearing a combination occipital and vertical-pull chincup over a 2-year period led to good results at age 16, with minimal dental or skeletal relapse at age 18 years 5 months.
Kuroda
Takao
T
Division of Hard Tissue Research, Graduate School and Institute for Oral Science, Matsumoto Dental University, Nagano-ken, Japan.
Deguchi
Toshio
T
Kageyama
Toru
T
Kawahara
Ichiro
I
D000293:Adolescent; D002508:Cephalometry; D002680:Chin; D005115:Extraoral Traction Appliances; D005145:Face / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D007569:Jaw Abnormalities / Q000150:complications* / Q000628:therapy; D008311:Malocclusion, Angle Class I / Q000150:complications* / Q000628:therapy; D008334:Mandible / Q000002:abnormalities*; D018704:Orthodontic Retainers; D009971:Orthodontics, Corrective / Q000295:instrumentation*; D055502:Secondary Prevention