Dental Most constant and valuable trait to differentiate among maxillary 1st , 2nd and 3rd molars is A Relative position of DL groove B Relative position of ML groove C ML cusp size D Oblique ridge size 💡 Explanation Most constant and valuable trait to differentiate among maxillary 1st , 2nd and 3rd molars is ✓ Correct Answer: A. Relative position of DL groove