Akademik

deciduous teeth

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the 20 teeth of the first dentition, which are shed and replaced by the permanent teeth. They begin to calcify at about the fourth month of fetal life, and near the end of the sixth month they all have begun to develop. The first incisors appear at about the age of

months; they are followed by the second incisors

month later; and, within

months, by the maxillary incisors. The deciduous molars begin eruption at about 1 year, and the deciduous canines approximately 4 months later. All the deciduous teeth are expected to erupt by the time the child is

years of age. The deciduous dentition formula (one side) is as follows:

where I = incisor; C = canine; M = molar. Symbol D. Called also baby, milk, primary, or temporary teeth; deciduous, first, primary, or temporary dentition; and dentes decidui [TA].

Models of deciduous teeth (A); deciduous canine (B); and deciduous second molar (C).

Medical dictionary. 2011.