HC Deb 31 October 1984 vol 65 c970W
Mr. Best

asked the Secretary of State for Wales on what statistical information he based his conclusion that the artificial fluoridation of the public water supplies on Anglesey has been responsible for the lower incidence of caries compared with Arfon.

Mr. Wyn Roberts

The most recent evidence of dental caries among residents of fluoridated Môn as contrasted with residents of unfluoridated Arfon was contained in an as yet unpublished 1983 study by Professor D. Jackson, Professor P. M. C. James and Mr. F. D. Thomas.