Al-Ubaydi AS, Al- Mothaffar NMJ. Evaluation of Andrews’ six keys of normal occlusion in a sample of Iraqi adults in Baghdad city. J Bagh Coll Dent. 2013;25(2):130-139. Accessed May 2, 2024. https://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/241