Is there correlation between marginal misfit and strains around implants?

Tension induced to implants may be responsible to reabsorption of bone tissue around and failure of implants. Prosthesis with minimum vertical misfit are required believing in lower values of tension induced to implants. Objectives: The aim of this study was to correlate values of misfit and tension induced to implants after the screwing of titanium frameworks. Methods: Ten commercially pure titanium (Ti c.p.) frameworks were manufactured using a metallic master cast containing 2 implants connected to multi-unit conical abutments. To misfit evaluation, one-screw test measurement was performed with an optic microscope (120x). To evaluate tension induced to implants, strain gages connected to specific software were used. Data were statistically compared. Results: The misfit mean value was 118.07 (58.61 µm) and tension mean value was 580.06 (253.93 gf). Pearson test was applied, showing no correlation between misfit and tension (-0.072). Conclusions: Vertical misfit and its level are not secure indicators in prognosing tension induced to osseointegrated implants.