Dentoskeletal effects produced by a Jasper Jumper with an anterior bite plane.
Angle Orthod
; 86(5): 775-81, 2016 Sep.
Article
in En
| MEDLINE
| ID: mdl-26927020
ABSTRACT
OBJECTIVE:
The aim of this retrospective study was to evaluate the dentoskeletal effects produced by a modified Jasper Jumper with an anterior bite plane for the correction of Class II division 1 malocclusion. MATERIALS ANDMETHODS:
A sample of 32 growing patients (mean age â=â 11.9 ± 1.4 years) with Class II division 1 malocclusion and increased overbite were treated with a modified Jasper Jumper (JJ) and anterior bite plane protocol and compared with a matched control group of 30 subjects with untreated Class II malocclusion (mean age 12.2 ± 0.8 years). Lateral cephalograms were taken before treatment (T1) and at the end of comprehensive treatment (T2). Mean treatment duration was 2.1 ± 0.4 years. The T1-T2 changes in the two groups were compared with Student's t-tests for independent samples.RESULTS:
The JJ group was successfully treated to a Class I occlusal relationship with a significant reduction in overjet (-3.9 mm, P < .001) and overbite (-3.1 mm, P < .001). The JJ group exhibited a significant increase in mandibular length and a significant improvement in maxillomandibular sagittal skeletal relationships. The lower incisors were significantly proclined, while the lower first molars demonstrated significant movement in a mesial direction.CONCLUSIONS:
Use of a modified JJ appliance and anterior bite plane is an effective protocol for the treatment of Class II malocclusion with increased overbite and greater skeletal (75%) than dentoalveolar (25%) effects mainly at the mandibular level.Key words
Full text:
1
Database:
MEDLINE
Main subject:
Activator Appliances
/
Malocclusion, Angle Class II
Type of study:
Guideline
/
Observational_studies
Limits:
Adolescent
/
Child
/
Female
/
Humans
/
Male
Language:
En
Year:
2016
Type:
Article