The HKSO recommends that children should see an orthodontist for an initial orthodontic assessment no later than the age of 7. This examination allows the orthodontist to determine the optimum time to commence treatment. In some growing children, orthodontic problems will benefit from a course of earlier treatment to improve the bite so that the later course of orthodontic treatment can be minimized or completely avoided. In those children, where no immediate therapy is indicated, the orthodontist may want to monitor the child's growth and dental development. Waiting until all the permanent teeth have come in, or until facial growth is nearly complete, may make correction of some problems more difficult.