| dc.description.abstract | Introduction : The vertical dimension of the face is an important aspect that needs to be considered in orthodontic treatment to achieve facial balance. Changes in vertical dimensions that occur can affect aesthetics, where the resulting soft tissue profile is a measure of the success of the treatment. Objective: to determine the effect of changes in vertical dimensions on the value of facial harmony after orthodontic treatment based on Arnett and Bergmann analysis on skeletal Class I malocclusions in the two study sample groups. Material and Method : The research sample consisted of lateral cephalometric photos before and after treatment of 60 adult patients who were divided into 2 groups, extraction and non extraction of the first premolars. Measurements were made using Software Image J 1.52a in 2018 and statistical tests to see the effect of changes in vertical dimensions on facial harmony values after orthodontic treatment in skeletal Class I malocclusions based on Arnett and Bergmann analysis, which were then compared between the extraction and non extraction groups. Results : Based on the results of the paired t test in the two sample groups, there was no significant difference in the effect of facial vertical changes (MP-SN) on facial harmony values with an overall p value > 0.05 in Class I malocclusion. And there was no difference in the effect of changes between both groups of samples with an overall p value > 0.05. Conclusion : Changes in the vertical dimension of the face did not significantly affect the total facial harmony value, both in the extraction and no extraction groups. | en_US |
