These national standards contain information for establishing and operating effective apprenticeship programs for dental technicians. Included in the volume are the following: definitions; provisions of the standards (equal opportunity in apprenticeship; terms of apprenticeship; apprenticeship agreements; ratios of apprentices to dental technicians; probationary periods; credit for previous experience; hours of work; compensation; examinations; work experience; related instruction; apprentice records, reports, and examinations; selection procedures; accident prevention; adjusting differences; and certificates of completion of apprenticeship); the apprenticeship and training policy of the National Association of Dental Laboratories; and guidelines for adapting national standards to local use (the national apprenticeship and training committee, employers and supervisors of apprenticeship and training, ratios of apprentices, filing with the registration agency, consultants, terms of apprenticeship, rates of pay, supervision, and modification). Concluding the guide are specifications of the training hours for dental technicians in the following areas: dentures, crown and bridge, ceramics, and casting. (MN)