During which time frame is the permanent maxillary and mandibular incisors and canines most vulnerable to discoloration caused by tetracycline?

Show Answers

From 3 months after birth up to the age of 7 yearsBetween 4 months before birth and 3 months after birthFrom 5 months before birth to 9 months after birthStarting at birth until 7 years of age

Explanation

The critical period when tetracycline can cause discoloration in permanent maxillary and mandibular incisors and canines spans from 3 months postpartum to 7 years of age. Exposure outside this window is less likely to result in such staining.