Orthodontics — Key differences for NEET MDS
Class I = normal molar relationship crowding anterior. Class II Division 1 = proclined upper incisors overjet increased. Class II Division 2 = retroclined upper incisors deep bite. Class III = mesial lower molar anterior crossbite prognathism. Key is UPPER FIRST MOLAR to LOWER FIRST MOLAR relationship. Dewey-Anderson modification of Class I.
📖 Read full notes →Most common relapse = lower anterior crowding. Bonded retainer = permanent fixed retainer. Hawley retainer = removable with labial bow. Circumferential supracrestal fiberotomy prevents rotational relapse. Vacuum formed retainer = Essix = clear overlay. Relapse causes: late mandibular growth, soft tissue pressure, periodontal fiber recoil.
📖 Read full notes →NEET MDS frequently tests the ability to differentiate between related topics. Understanding the key differences between Angles Classification and Retention & Relapse in Orthodontics is crucial for scoring well. Questions may test diagnostic features, treatment approaches, or characteristic findings.