Children's Dental Health Act - Title I: Dental Health Projects - Provides grants for children's dental health projects under the Public Health Service Act. Authorizes appropriations for fiscal years 1975, 1976, and 1977 to make grants to State and other health agencies for projects for dental care and services for children of preschool and school age. States that such projects shall include corrective, followup, and preventive services as may be prescribed by the Secretary of Health, Education, and Welfare. Declares that such grants may be utilized for research, demonstrations, or experimentation intended to develop new methods for the prevention, diagnosis, or treatment of dental problems, or the payment of dental care. Authorizes appropriations for fiscal years 1975, 1976, and 1977 for grants to assist in developing in communities or in public schools, water treatment programs designed to reduce the incidence of oral disease or dental defects. States that the President shall appoint a seven-member Dental Advisory Committee to assist the Secretary of Health, Education and Welfare in reporting to the President annually on the progress of the programs established by this Act. Authorizes the Secretary to make grants to State and local educational agencies and other institutions to support demonstration projects with respect to dental health education and dental health projects. States that such projects may include projects: (1) for the development of teacher training in the dental health area and dental health education; (2) for the development of nutrition and dietary education methods related to dental health; and (3) for the development of more effective methods of educating the general public with respect to dental health. Directs the Secretary to evaluate programs assisted by such grants. Authorizes appropriations to carry out the provisions of this Act through fiscal year 1977. Title II: Other Federal Programs - Provides for the allocation of funds appropriated for the purposes of this Act to programs of dental health: (1) for migrant health; (2) community health centers; and (3) Indian health.