The length of the intraoral period of primary teeth.
D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D012727:Sex Characteristics; D013997:Time Factors; D014078:Tooth Eruption; D014080:Tooth Exfoliation; D014094:Tooth, Deciduous / Q000502:physiology