: "Comparative Evaluation of 3 Dimensional Changes of Dentition in Post Orthodontic Patients With Immediate vs Delayed (Post 3 Days) Retainer Delivery

Inclusion Criteria: * Adult orthodontic patients treated with 022\*028 MBT appliance with following sequence of wires- 014, 016, 16\*22, 17\*25, 19\*25 NiTi followed by 19\*25 SS. * Treatment duration of 24-36 months with Optimal functional occlusion at end of treatment (PAR score \>70%). * Class I bimax and Class II div I with pre-treatment Little's irregularity index \<6mm in both upper and lower arch. * Nonsurgical and non-orthopedic patients. * Non syndromic patients and no impaction of teeth except third molars. * No previous orthodontic treatment. * Optimal periodontal condition and Good oral hygiene. * Good compliance regarding retainer wear (Cases who never missed more than 2 consecutive appointment and who reported with less no of breakages). Exclusion Criteria: * Subjects with incomplete orthodontic treatment. * TMJ disorder patients. * Any systemic disease affecting bone and general growth. * Patients with incomplete records. * Patient who fail to follow up or undergo complete treatment. * Patient with learning difficulties