Statement of problem: Failures in implant therapy have been associated with lack of stability or misfit at the implant-abutment interface.Two-piece implants have a microgap depending on the interface type or system, but presence of fluid flow at this interface and its relationships are very variable. This has been correlated to the presence of bacterial infiltration and inflammatory cells that may lead to bone loss around this area.
Purpose of the study: The purpose of this study is to evaluate and compare the marginal fit of implant abutment copings made by direct and indirect impression techniques and fabricated by conventional casting and laser sintering.
Materials and methods: Implant abutment copings were evaluated for marginal discrepancies at four random points after which interface was evaluated using scanning electron microscope.
Result: On evaluation, the implant abutment copings fabricated by direct impression technique and laser sintering showed minimal marginal discrepancies compared to the other groups.
Conclusion: Within the limitations of the study, in relation to the marginal fit, the implant abutment copings fabricated by direct impression technique and laser sintering had the most significant result with the least marginal discrepancies
Impact Factor
2022: 6.012
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