<prompt> Which tooth is first to erupt in Lower Jaw?First molarPremolarIncisorCanine  <response>: Ans. is c i.e., Incisor o Permanent teeth 1st molar 6-7 years Central and lateral incisor 6-8 years Canine and premolar 9-12 years 2nd molars 12 years Third molars 18 years and later o Deciduous teeth Upper Lower Central incisor 7 12 Month 6- 12 - Month Lateral incisor 8 Month 7 Month Canine 16-20 Month 16-20 Month 1st molar 12-16 Month 12-16 Month 2nd molar 20-30 Month 20-30 Month 