Aim: This study aims to clinically evaluate whether the local administration of vitamin D3 enhances postorthodontic tooth stability over a period of 3 months immediately after debonding.
Materials And Methods: Patients aged 15-30 years with dental malocclusion and moderate crowding in the lower arch (Little's irregularity score of 4-6) were selected and randomly split into the experimental and the control groups. After complete alignment and leveling, vitamin D3 injection was delivered to the experimental group and the control group was given a placebo injection with 0.