Dentition: The mixed dentition

Call period of mixed dentition to one in which we find in the mouth teeth and teeth final at the same time. This happens roughly between 6 and 12 years. At this time there is a replacement tooth and the permanent molars appear in areas beyond the arch.
 
 The mixed dentition is not really a new teeth, but it is one way to describe the situation of transition that occurs from the dental arches are composed entirely of baby teeth until they are permanent teeth. So, strictly speaking, the human has only two dentitions: the temporary and permanent.
 
 This period of mixed dentition is divided into two phases, which are the mixed dentition first phase and the second phase mixed dentition. This division is because there are two active periods of spare time and a more stable intermediate in which they do not exfoliate teeth or permanent teeth emerge.
 
 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 4-6 months. A delay of more than 6-12 months can make an appropriate consultation with a professional. Delays or early in the eruption of milk teeth are 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 permanent teeth that erupt in the era of mixed dentition would be as follows:
 
 First molars: 6-7 years of age. Popularly known as the grinding wheels of 6 years.
 Lower central incisor: 6-7 years.
 Lower lateral incisors: 7-8 years.
 Central upper incisors: 7-8 years.
 Upper lateral incisors: 8-9 years.
 Canines (fangs) below: 9-10 years.
 Upper and lower premolars: 10-12 years.
 Canines (fangs) above: 11-13 years.
 Second molars: 11-13 years. Popularly known as the grinding wheels of 12 years.
 At the time in which exfoliates the last milk tooth, usually a top dog, we can already speak of themselves having completed the phase of mixed dentition and then we have permanent teeth, although it is not yet complete.
 
 The mixed dentition stage of the first phase includes the eruption of all permanent incisors. With the departure of the lower canines begins the second phase called mixed dentition, which corresponds to a state of maximum growth for the child.
 
 The time that elapses between the exfoliation of a milk tooth and the emergence of the corresponding final is variable, and comes to be from 0 to 5 months. On many occasions, to drop the milk tooth, and shows the edge of the final tooth emerging.
 
 Permanent teeth that come to substitute for milk are correlated, ie the upper right lateral incisor final will replace the temporary upper lateral incisor. The first and second premolars (of permanent teeth) will replace every first and second molars of milk.
 
 Permanent teeth that will replace a temporary tooth, erupt in a very defined path. This path is determined by the temporary root of the tooth, then, on the way to the mouth, the permanent teeth will be "eating" the result of the storm: So that when the milk tooth is exfoliates, it only makes the crown, because the root is almost completely reabsorbed.