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What is Eruption of 1st molar permanent tooth occurs at the age of and explain in detail?
Eruption of permanent molar teeth: First molar( upper jaw) - 6-7 yrs First molar ( lower jaw) -. 6-7 yrs Second molar (upper jaw)- 12-13yrs Second molar(lower jaw)-11-13yrs Third molar(upper jaw)-17-21yrs Third molar(lower jaw)-. 17-21yrs Hence, the eruption of first molar permanent tooth is at the age of 6-7 yrs. Ref: Ghai, 9th edition- Pg-11.