Dental Molar-incisor hypoplasia in primary teeth at the occlusal level is due to developmental defect occurring during? A Birth to 12 months B 4th month intra-uterine to birth C 22 months to 26 months D 24 months to 48 months 💡 Explanation Molar-incisor hypoplasia in primary teeth at the occlusal level is due to developmental defect occurring during? ✓ Correct Answer: B. 4th month intra-uterine to birth