Dental A 6 year old child does not have any permanent tooth erupted in oral cavity. By what maximum age the tooth should erupt normally? A 7.5 years B 8.5 years C 6.5 years D all of the above 💡 Explanation A 6 year old child does not have any permanent tooth erupted in oral cavity. By what maximum age the tooth should erupt normally? ✓ Correct Answer: A. 7.5 years