Comparative 3-Dimensional Superimposition Analysis of Dentition in Horizontal and Vertical Growers During the Retention Phase - A Prospective Clinical Trial

What this Trial Is About

Researchers are investigating how facial growth patterns affect the relapse of teeth alignment after orthodontic treatment during the retention phase. The study focuses on differences between horizontal and vertical growers, hypothesizing that horizontal growers show more vertical tooth movement, especially in overbite, while long-faced individuals may experience more relapse in lower front teeth alignment and crowding. Understanding these factors helps predict and prevent relapse, aiming to improve long-term orthodontic treatment stability. Participants are grouped based on facial growth type: vertical growers with a fixed mandibular plane angle (FMA) of 26 degrees or more, and horizontal growers with an FMA of 24 degrees or less. All participants have completed fixed orthodontic treatment and will receive a Begg's retainer formed by conventional methods within 24 hours of debonding. The study compares 3-dimensional dentitional changes in the teeth over a 12-month retention period using advanced 3D superimposition techniques. During the study, participants will be monitored for tooth movement in three planes of space: antero-posterior, vertical, and transverse. Researchers will assess these changes using measurements like the Little's irregularity index and PAR score to evaluate occlusion and alignment. Regular follow-ups will track retention compliance, oral hygiene, and periodontal health. The main outcome is the comparison of 3D dentitional changes over 12 months to understand how facial growth patterns influence orthodontic relapse and stability.

Comparative 3-dimensional Superimposition Analysis of Dentition in Horizontal and Vertical Grower During the Retention Phase -A Prospective Clinical Trial''