Aim: Attempting to remove implant fractured screw usually damage fixture’s internal threads, rendering osseo-integrated implant useless. The study aimed at testing a new technique, which salvages osseo-integrated implant with damaged internal threads, using post and core, thus retaining the prosthesis. Materials and Methods: Posts and cores are fabricated from Zirconia and Nickel Cromium (NiCr). Specimens were divided into seven groups (n = 10) depending on material and duration of function: Group 1: Zirconia immediate placement; Group 2: NiCr immediate placement; Group 3: Zirconia after five months of function; Group 4: NiCr after five months of function; Group 5: NiCr after one year of function; Group 6: NiCr after two years of function; and Group 7: NiCr after three years of function. Fatigue resistance test was applied followed by tensile bond strength test to the surviving specimens. Scanning Electron Microscope (SEM) test was applied to random bonded and de-bonded specimens. Data were analyzed using analysis of variance (ANOVA), Tukey’s post hoc, and Chi-square test to detect significance at P ≤ 0.05. Results: All Zirconia specimens were fractured and were not dislodged in fatigue resistance testing; hence their results were excluded from statistical analysis. All NiCr specimens in the fatigue resistance test in the five-month, one-year, and two-year duration groups were successfully retained. However, 40% of the specimens in the three-year duration group were dislodged. The tensile bond strength test showed no significant results up to the first-year duration group, whereas the bond strength decreased by 16.32% in the two-year duration group and 54.32% in the three-year duration group. The SEM testing of a random bonded specimen showed a continuous cement layer. Further, the de-bonded specimen showed generalized adhesive/cohesive fractures in the cement layer. Conclusion: NiCr posts and cores succeeded in two-year function, but they may need a three-year follow-up for performing the re-cementation procedure.