LOWER ANTERIOR FACIAL HEIGHT CHANGES FOLLOWING ORTHODONTIC TREATMENT WITH PREMOLAR EXTRACTIONS

Abstract

Facial profile plays a key role in facial esthetics and in the process of orthodontic treatment planning.The anterior and posterior height defines the facial balance. Facial types may be classified in a variety of ways but hyperdivergent and hypodivergent are the most common types.Extraction treatment is advocated for hyperdivergent face and non extraction treatment is advocated for hypodivergent face. There is a controversy regarding the effect of premolar extraction and the change in lower anterior facial height. Some of the authors consider that premolar extraction causes changes in lower anterior facial height whereas other authors disapprove.The objective of the study was to investigate the changes in lower anterior facial height following orthodontic treatment with premolar extractions. Lateral Cephalograms of 10 patients between June 2019 to March 2020 who were treated for malocclusion were collected, were divided into two groups equally based on whether extraction were done or not for aiding retraction. The records were assessed using SPSS software version 26 by IBM. Statistical test was the student T Test . In this study we observe that no statistically significant difference was found in lower anterior facial height between the extraction and non extractiongroups.Withinthe limitations of study it can be concluded that there is no