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 →Neural growth first to complete by age 6. Lymphoid exceeds adult size then decreases teenager. Genital growth late pubertal spurt. Scammon growth curves four types. CVM cervical vertebral maturation CS3-CS4 = peak growth. Hand wrist radiograph for skeletal maturity. Functional matrix theory Moss. Sutural growth theory Sicher.
📖 Read full notes →NEET MDS frequently tests the ability to differentiate between related topics. Understanding the key differences between Cephalometric Analysis and Growth & Development in Orthodontics is crucial for scoring well. Questions may test diagnostic features, treatment approaches, or characteristic findings.