Dental General e2256cca A development disturbance in the enamel of mandibular first molar crown usually occurs between which of the following ages A 8 months prenatal to one year postnatal B Birth to 3 years postnatal C 3 years postnatal to 5 years postnatal D 6 years postnatal to 8 years postnatal High-Yield Explanation No explanation provided.