The soft tissue covering of the face plays an important role in facial esthetics, speech and other physiologic functions.
Thus, it is recognized by all clinical orthodontists that success of orthodontic treatment is closely related to the changes in soft tissues of the face.
The purpose of this study was to evaluate the changes of bony and soft tissues in prepost treatment of Angle´s Class III malocclusion.
The sample consisted of 18 males? and 37 females, pretreatment age of 9´ years to 11 years.
For this -study 11 Landmarks were.-plotted, 14 linear length, 4 soft tissue thickness and 2 angles were measured.
The obtained results. were as follows;
1. In the linear measurements of bony and soft tissue changes, A, Is, Ss, Ls and Li were located more anteri--rly in both sexes. However Si and B showed more remarkable anterior movement in female.
2. In the comparison of the changes of the soft tissue thickness, Ss and Li in male subjects and Ss in female subjects increased.
3. In the degree of correlation between changes in the soft tissue profile and changes in
the skeletal profile, Is: Ls, Il: Li and B: Si in both sexes had signficant correlation.
However A:Ss had remarkable significant correlation in female.
`k, ? There were significant correlation between change in LA and change in LB in all sexes.
5. There were Tittle correlation between changes in distance difference of Is and Ii and Change in distance difference of Ls and Li in all sexes.
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