Primary teeth, primary deciduous or milk is beginning to emerge in children of 6-8 months and ends exiting the 24-36 months, and remains in your mouth without being accompanied by permanent teeth until about 6 years of age. It is teeth of a size smaller than the teeth of definitive agreements, consistent with the smaller size of the bones (and the dental arches) at an early age. They are also more flattened and teeth whiter.
 
 Recall that the teeth consists of 20 teeth:
 
 Central incisors: 2 above and 2 below.
 Lateral incisors: 2 above and 2 below.
 Canines (fangs): 2 above and 2 below.
 First teeth: 2 above and 2 below.
 Second molars: 2 above and 2 below.
 In each of these two upper and lower teeth, is a right and the other is left.
 
 The ages of emergency in the teeth that are going to describe are indicative. The delays should not worry if they are not skewed, that is, if you leave a tooth and does not begin to leave the counterpart of the other half of the mouth in 2-3 months. A delay of more than 4-6 months can make an appropriate consultation with a professional. Delays or early in the eruption of milk teeth is correlated in time with a rash on permanent teeth, so that a temporary delay in the eruption of 2 months tends to be related to a delay of several months in the replacement of teeth into permanent teeth. But if the eruption takes place in a normal manner, rather than late or early, we prefer to talk about rate of eruption more or less rapid.
 
 The sequence of tooth eruption would be as follows:
 
 Lower central incisor: For 6-10 months old.
 Central upper incisors: 8-12 months.
 Upper lateral incisor: 9-13 months.
 Lower lateral incisors: 10-16 months.
 First upper molars: 13-19 months in boys and girls in 14-18 months.
 Lower first molars: 14-18 months.
 Lower canines: 15-21 months.
 Upper canine: 16-22 months.
 Seconds lower molars: 23-31 months in boys and girls at 24-30.
 Seconds upper molars: 25-33 months.