§ Mr. Viantasked the Minister of Health to state the information collected on the state of children's teeth at Watford and the control area; how many dentists or other persons examined the teeth in those areas; the ages of the children examined in each; the provisions made to ensure the same standards being used throughout the investigation; what period the investigation covered; how long the investigators will wait after fluoridation starts at Watford to check the state of the teeth of children drinking fluoridated water and of children in the control area; and what classes of children will come into the subsequent investigation.
§ Mr. TurtonThree dentists examined about 1,700 children between three and fourteen years of age selected at random from children born and brought up in Watford and in the control area. To ensure uniformity of examinations and assessment, each dentist took a course of instruction at the Post-Graduate Institute 231W of Dental Surgery. The investigation took about two months. It is proposed to hold an annual examination of children in the two areas, in the same age groups, selected in the same way, and conducted as far as possible by the same examiners.