The aim of this study was to evaluate the effect of cement thickness and cement type on stress distribution over implants retaining cantilever fixed prosthesis.Forty five three units fixed partial dentures replacing the two maxillary premolars and first maxillary molar were fabricated where the maxillary first molar was the cantilever abutment. The forty five fixed partial dentures were divided into three groups according to cement thickness each group composed of fifteen fixed partial dentures.Each group was then further subdivided into three subgroups according to cement type each sub group composed of five fixed partial dentures. The effect of cement type and cement thickness were evaluated by use of strain gauges, strain meter and universal testing machine to deliver static load of 100 N.Data were collected, tabulated and statistically analyzed. In general increasing cement thickness did not lead to decreasing stresses over the underlying implants, also temporary cement showed the highest strain around the distal implant followed by resin cement then glass ionomer cement used in this study.