Objective: The aim of this study was to evaluate the quality of communication between dental practitioners and dental technicians through work authorizations and selection of impression trays and materials for both fixed and removable prosthodontics in the Dental College of King Saud University.Methods and materials: A questionnaire was distributed to the dental technicians concerning the quality of written instructions in the work authorization form. Use of impression trays and materials for fixed and removable prosthodontics, were part of the questionnaire. Out of two hundred distributed questionnaires, 136 were received (response rate = 68%). Using pre-determined grading criteria.Results: The findings showed that half of the written instructions were considered ''clear'', out of which 34% the technician had to seek clarification from the dentist concerning the written instructions which reveal inadequate prescription. The special tray was the most common choice of impression tray (53.8%) and the elastomers were the most common impression material used (71%) for both fixed and removable prosthodontics. The technicians were certain that the final impression had been disinfected in only 81% of cases.Conclusion: This study showed that it is worth emphasizing that clear and effective communication about design information is essential to ensure fabricating good quality fixed and removable prostheses.

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