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 →Nance holding arch = maxillary anchorage. Lingual arch = mandibular anchorage. TADs mini screws = absolute anchorage = skeletal anchorage. Headgear = extraoral anchorage cervical pull or high pull. Critical anchorage = ALL space needed for crowding. Maximum anchorage = most space for retraction. Moderate anchorage = reciprocal movement acceptable.
📖 Read full notes →NEET MDS frequently tests the ability to differentiate between related topics. Understanding the key differences between Cephalometric Analysis and Anchorage Types in Orthodontics is crucial for scoring well. Questions may test diagnostic features, treatment approaches, or characteristic findings.