In order to know the recognition of dentist and laboratory technician about work order transmission and communication and troubles of restorations, this study was conducted for 84 practicing dentists and 122 dental laboratory technicians in Pusan during Mar. to Apr. 1988 using a questionnaire method and was analyzed by the use of percentage, $X^2$-test. Conclusions It is necessary that both dentist and laboratory technician clearly reconize and fulfill their responsibilities to one another. Dentist and dental laboratory technician should offer constructive criticisn to one another as interdependent member of a team. Effective use of work authorizations certainly promotes communication between the dentist and dental laboratory thechnician.