Emergence of primary teeth and onset of dental stages in Icelandic children.

This study was undertaken to elucidate the mean ages at emergence of primary teeth and at the onset of dental stages DS 01 and DS 02 in Icelandic children. The material comprised 927 children (498 boys and 429 girls) aged 0-83 months who were presented for regular examinations in two Health Centers and children in three kindergartens in Reykjavík. Comparison of the mean ages at emergence of primary teeth in Icelandic, Finnish, Swedish, US, and Hungarian children disclosed a significantly earlier emergence in the Icelandic children, except that in Finnish children it was similar.