Orthodontics — Key differences for NEET MDS
SNA = 82 degrees maxilla position relative to cranial base. SNB = 80 degrees mandible position relative to cranial base. ANB = 2 degrees skeletal relationship Class I. ANB greater than 4 = Class II skeletal. ANB less than 0 = Class III skeletal. Wits appraisal when ANB unreliable. Tweed triangle = FMA FMIA IMPA. Steiner analysis = SNA SNB ANB.
📖 Read full notes →Twin Block = most popular functional appliance. Activator = Andresen = most studied. Frankel = vestibular shield = functional regulator. Bionator = modified activator by Balters. Herbst = fixed functional appliance. Jasper Jumper = flexible fixed functional. All work by mandibular advancement in Class II.
📖 Read full notes →NEET MDS frequently tests the ability to differentiate between related topics. Understanding the key differences between Cephalometric Analysis and Functional Appliances in Orthodontics is crucial for scoring well. Questions may test diagnostic features, treatment approaches, or characteristic findings.