I am not aware of any correlation. As you know integrated positions in Plastics are the most competitive of all residency slots. Aside from top grades/board scores, clinical letters, etc, the research type does NOT matter.
If you did research in microbiology or pharmacokinetics of some new antimalerial drug, it would not matter. What matters for research is publications and quality science. You would benefit more with solid science publications in a non-surgical field than if you had one plastic surgery abstract at a conference.