Milk teeth, which usually complete after 2.5 years of age, fall out after an average of 6 years, and permanent teeth begin to erupt in their place. The first tooth to erupt in children is generally the first molar. The eruption of permanent teeth in girls may begin earlier. The eruption and fall times of deciduous teeth Upper Teeth Middle Incisors: It erupts between 8 and 12 months and falls between 6 and 7 years of age Lateral Incisors: It erupts between 9 and 13 months and falls between 7 and 8 years of age Canine: 16 to 22 Appears between the age of . Incisors: erupt between 6 and 10 months and fall between 6 and 7 years of age. Lateral incisors: erupt between 10 and 16 months and fall between 7 and 8 years of age. Canines: erupt between 17 and 23 months and between 9 and 12 years. First Molar: It erupts between 14 and 18 months and falls between 9 and 11 years of age Second Molar: It erupts between 23 and 31 months and falls between 10 and 12 years of age.