الفهرس 
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Abstract
The aim of this study was to assess the relationship of ANB angle and Overjet
in different sagittal skeletal malocclusions using Lateral Cephalometry or in
another way the extent to which ANB angle can predict overjet using lateral
Cephalometry
Seventy Five Lateral Cephalograms fulfilled the inclusion criteria were
classified according to ANB angle; Twenty Five for Skeletal Class I, Twenty Five
for Skeletal Class II and Twenty Five for Skeletal Class III, were selected from
archive of Oral Radiology department, Faculty of Dentistry, Suez Canal University
Each radiographic film was traced using Dolphin™ Imaging orthodontic software
Within individual classes of malocclusion according to ANB angle, the average
values of ANB angle and overjet were calculated and their correlations tested. The
extent to which ANB angle can determine overjet was assessed
Summary and conclusions
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from this study it was concluded that:
1- In class I, there is a weak non-significant correlation between
ANB angle and overjet
2- In class II, there is a positive significant correlation between overjet
and ANB angle
3- In class III, there is a weak to moderate significant correlation
between ANB angle and overjet
This study concluded that ANB angle is a good predictor for overjet
significantly in class II but in class I and class III, ANB angle is a weak
predictor for overjet due to dental compensation that occurs in upper and
lower incisors. Still, there is a relatively wide interval variability, which
cannot be explained by ANB angle alone. Probably, there are other
important factors which were not included in this study and further
research should be performed