First teeth to erupt is -: (A) First molar, (B) Premolar, (C) Incisor, (D) Cannine
Answer is C. Permanent teeth

1st molar = 6-7 years
Central and lateral incisor = 6-8 years
Cannine and premolar = 9-12 years
2nd molars = 12 years
Third molars = 18 years and later

Deciduous teeth