Treatment effects of R-appliance and Anterior Inclined Bite Plate in Class II, Division I malocclusion
J. appl. oral sci
;
19(6): 634-638, Nov.-Dec. 2011. ilus, tab
Article
in English
| LILACS
| ID: lil-610879
ABSTRACT
OBJECTIVES:
The purpose of this study was to compare the effects of a differently designed functional appliance (R-appliance) and the Anterior Inclined Bite Plate (AIBP) in Class II Division I (Cl II Div I) cases. MATERIAL ANDMETHODS:
Fifty patients (28 girls, 22 boys) were chosen for the study 25 patients (13 girls, 12 boys) with mean age of 10.4±0.8 years were treated with R-appliance for 11±2 months, the other 25 patients (15 girls, 10 boys) with mean age of 9±1.2 years were treated with AIBP for 10±2 months. All patients had Cl II Div I malocclusion due to mandibular deficiency. Lateral cephalograms were analyzed at the beginning (T1, T 1) and end of the study (T2, T 2).RESULTS:
Paired T-test showed that SNB had a significant increase in both groups. The same test revealed that IMPA was reduced in R-appliance for 3.1±4.7 (p<0.01), but it was increased for 0.1±5.1 (p<0.9) in AIBP group. T-test showed that the inter-group difference of IMPA was statistically significant (p<0.05). SNA showed an increase in both groups (p<0.9). Ar-B and Ar-Pog showed an increase in both groups and the differences between them were statistically significant.CONCLUSIONS:
Mandibular advancement was achieved in both groups, but R-appliance achieved this result without lingual tipping of lower incisors.
Full text:
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Index:
LILACS (Americas)
Main subject:
Orthodontic Appliance Design
/
Orthodontic Appliances, Functional
/
Malocclusion, Angle Class II
Type of study:
Controlled clinical trial
Limits:
Child
/
Female
/
Humans
/
Male
Language:
English
Journal:
J. appl. oral sci
Journal subject:
Dentistry
Year:
2011
Type:
Article
Affiliation country:
Iran
Institution/Affiliation country:
Islamic Azad University/IR
/
Shahid Beheshti University of Medical Sciences/IR
/
Tehran University of Medical Sciences/IR
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