Akademik Veri Yönetim Sistemi
Online Congress of the European Orthodontic Society. , London, İngiltere, 2 - 03 Temmuz 2021, cilt.43, sa.99, ss.56-57
AIM: To examine the facial modules determined according to Enlow's counterpart analysis in high and low
angle skeletal Class II individuals and compare these with the values of a skeletal Class I control group.
MATERIALS AND METHOD: Lateral cephalometric films of 270 high and low angle Class II and optimum Class
I patients were evaluated by analysis of variance and Duncan post-hoc multiple comparison. For statistical
analysis, factors of growth pattern and growth period had three levels, whereas the factor of gender had
two levels.
RESULTS: Horizontal length of the posterior craniofacial column was found to be statistically significantly
shorter in the high angle group; horizontal length of anterior craniofacial column was found to be similar in
the high angle and control groups. The vertical length of the posterior craniofacial column (SO-Ra vert) was
found to be statistically significantly shorter in the high angle group. In low angle individuals, while the
horizontal length of the posterior craniofacial column was similar to that of the control group, the horizontal
length of the anterior craniofacial column was found to be statistically significantly longer. The vertical
length of the anterior craniofacial column (SD vert, AM vert) was found to be statistically significantly
shorter. In all groups, the horizontal length of the posterior craniofacial column-width of ramus, horizontal
length of the anterior craniofacial column-maxillary skeletal distance followed the principles of Enlow's
counterparts.
CONCLUSION: In high angle individuals a Class II morphology is caused by the maxillomandibular
relationship depending on posterior cranial morphology and in low angle individuals is caused by the
maxillomandibular relationship depending on anterior cranial morphology.