The aim of this retrospective longitudinal study was to assess the survival rates and the follow-up costs of telescopic crown retained dentures.The study was based on the data of 554 telescopic crown retained dentures and their 1758 abutment teeth. All prostheses were delivered in the Department of Dental Prosthetics of the Justus-Liebig-University of Giessen between 1995 and 2004.The 90%- (50%-) survival rate of the prostheses was determined at 6,4 years (9,3 years).The 90%- survival time of the abutment teeth was determined after 6,9 years.Because of the high incidence of following treatments in the first year after insertion of the prosthesis the highest follow-up costs of approximately 100 € were noted in this period. Then the costs dropped to averagely 55 € a year.Overall the repairs of facings of the secondary telescopic crowns caused the highest costs during the functional period of the prosthesis. More than one third of the whole follow-up costs were caused of the renewal of facings. Keywords: Longitudinaluntersuchung; Teleskop; Überlebensrate; Zahnersatz, festsitzend/herausnehmbarer