AbstractThe purpose of this investigation was to determine the mean ages at emergence of the permanent teeth of Icelandic children, as well as the mean ages at onset of the dental stages (DS). The material consisted of 1,941 randomly selected children, corresponding to 9.5 % of the total primary and secondary school population of Reykjavik. The mean ages at emergence of the permanent teeth, along with the ages at commencement of DS 2. DS 3, DS 4 and DS M2, are given. Owing to (he age distribution of the material, it was not possible to give mean ages at emergence of the first and third molars, or of the mandibular central incisors. A comparison of the emergence‐ages in Icelandic children with those of Danish and Norwegian children showed close agreemen