THE ROOT LENGTH CHANGE IN POSTERIOR TEETH INSTRUSION IN ANTERIOR OPEN BITE PATIENT

Abstract

"This retrospective cohort study aimed to investigate the root length change in posterior teeth incursion (upper second premolar, upper first, and second molar) in an open bite patient using fixed appliances with TADs and clear aligners. The CBCT was used to determine root length by segmentation upper posterior teeth into a 3D file and measuring root length from cusp tip to root apex. The difference in root length between pre-treatment and post-treatment indicated the level of change. All evaluated roots showed was significant decrease in root length. All evaluated roots showed a significant decrease in root length. Fixed appliances with TADs had significantly greater root resorption after intrusion compared to the Clear Aligner group in the palatal root of the upper first molar."