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Longitudinal predictability of AF-BF value in Angle Class I patients
D L Judy1, A G Farman, A M Silveira
1Department of Diagnosis and General Dentistry University of Louisville School of Dentistry, Kentucky 40291, USA.
The Angle Orthodontist
|January 1, 1995
Summary
The anteroposterior jaw relationship (AF-BF) shows a significant decrease with age in Caucasian Americans. This cephalometric measure is a clinically useful tool for assessing jaw discrepancies.
Area of Science:
- Dentistry
- Orthodontics
- Cephalometrics
Background:
- The anteroposterior jaw relationship is crucial in diagnosing skeletal discrepancies.
- Linear cephalometric measures provide objective data for orthodontic assessment.
Purpose of the Study:
- To determine mean Caucasian American AF-BF values at ages 8 and 18.
- To analyze age-related changes in AF-BF.
- To evaluate the correlation between AF-BF and ANB angle.
Main Methods:
- Retrospective, longitudinal study.
- Analysis of Bolton Growth Study data (30 males, 32 females).
- Cephalometric measurement of AF-BF and ANB angle.
Main Results:
- Mean AF-BF values decreased significantly with age in both males and females.
- No significant sex differences in AF-BF at ages 8 or 18.
- Strong correlation found between AF-BF and ANB angle, particularly in males.
Conclusions:
- AF-BF values decrease significantly from age 8 to 18 in Caucasian Americans.
- AF-BF is a reliable linear cephalometric measure for assessing anteroposterior jaw discrepancies.
- The correlation with ANB angle enhances its clinical utility in orthodontic diagnosis.