Talat Firdos, Waheedul Hamid, Saad Asad.
ANB+AOBO zone index (applicability to Pakistani population).
Pak Oral Dental J Jan ;24(2):193-6.

Sagital skeletal discrepancy is being evaluated Cephalometrically by using ANB angle and the Wit`s value. Ideally the 2 values should reflect the same degree of Sagital discrepancy but both assessments have their weaknesses: the value of ANB angle is subject to many variables in the dentofacial complex and the Wit`s value depends on correct location or representation of the occlusal plane. ANB+AOBO zone difficulty index was established by Polk et al to overcome the weaknesses associated with the ANB & Wit`s values. Aim of this study was to apply the proposed index on Pakistani population and assess its reliability. Results showed that the new index measure the jaw discrepancy more accurately as it gives us a new approach of assessing the treatment difficulty.

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