Bibliography: leaves 235-253. / xx, 431 leaves ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Examines the association between employment of dental hygienists and the patterns of delivery of diagnostic, preventive and treatment periodontal procedures and assesses the effectiveness of a continuing education intervention in altering the delivery of diagnostic, preventive and treatment periodontal services by practices employing and not employing dental hygienists in Adelaide, South Australia. / Thesis (Ph.D.)--University of Adelaide, Dept. of Dentistry, 1994?