Cephalometric study of the anterior and posterior facial heights in brazilian children, presenting Angle Class I malocclusion, in the mixed dentition

Arno LOCKS, Tatsuko SAKIMA, Ary dos Santos PINTO, Daltro E. RITTER

The objective of this study was to evaluate the anterior and posterior facial heights in 79 non orthodontic brazilian children, 46 females and 33 males, from 8 to 11 years old, presenting Angle Class I malocclusion, in the mixed dentition. Two lateral cephalometric radiographs were taken, with a time interval ranging from 8 to 16 months between radiographs in order to compare the cephalometric data. The anterior facial proportions were studied, based in following dimensions: N-Me (AFT), N-ENA (AFS) e ENA-Me (AFI). The Facial Height Index (IAF) was also evaluated taking in account the relationship between the Ar-Go (AFP) and the distance between the palatal plane and the menton (AFA). The results showed that growth tendencies were balanced; the Lower Facial Height dimension contributed more signiicantly to the Total Facial Height changes; the anterior facial proportions were around 42% for the Upper Facial Height and 58% for the Lower Facial height; the Facial Height Index was stable, around 0,66 or had a tendency to increase, according to the age; there were no sexual dimorphism in Anterior Facial Proportion and Facial Height Index.

Keywords: Cephalometric. Growth. Skeletal pattern.

Friday, May 03, 2024 10:11