<prompt> First tooth to appear is?Central lower incisorLateral lower incisorUpper central incisorLower lateral incisor  <response>: Ans. is a i.e., central lower incisor o First temporary tooth to appear in primary dentition is lower central incisors and last temporary tooth to erupt is 2nd molar. The sequence of eruption is lower central incisor upper central incisor upper lateral incisor lower lateral incisor 1st molar Canine 2nd molar Therefore eurption of temporary teeth is completed by eruption of 2nd molar at 25 months 2 years.o First permanent tooth to erupt in secondary dentition is 1 st molar and last to erupt is 3rd molar. The sequence of eruption is 1st molar central incisor lateral incisor 1st premolar 2nd premolar canine 2nd molar 3rd molar. Eruption of permanent teeth is completed by eruption of 3rd molar between 17-25 years. 