Aim: The aim was to compare micro strains in the supporting structures around implants when using two different implant systems in implant retained maxillary overdentures by strain gauge analysis.
Materials and Methods: Digital fabrication of twelve maxillary edentulous models, each model had four implant beds at the canines and second premolars and strain gauge slots. According to the type of implant system, two groups were found; group A: Strauman, group B: JD Evolution. The universal testing machine was used to apply a 100 N load bilaterally then unilaterally. Functional simulation periods of three and six months were applied then application of same load was repeated, and data were statistically analyzed.
Results: A significant difference was found between the two groups and the lower micro strain values were in group A (Strauman). During bilateral loading, values were 39.39 and 53.52 in group A and group B respectively and during unilateral loading, values were 50.66 and 59.89 in the loaded side and 27.71 and 29.41 in the unloaded side in group A and group B respectively.
Conclusion: BLX Strauman system induced lower strain values around implants than JD Evolution system in implant retained maxillary overdenture after six months of functional simulation.