a titanium dental implant was manufactured by VolMetals Co. for the past eight years. It performed well clinically. For economic reasons, manufacturing of the titanium device was outsourced to GatorsMetal, Inc. Early clinical results on this GatorsMetal implant, supposedly identical to the VolMetals implant, suggested increased inflammation. Describe two method you could use to compare the surface chemistry and structure of these two devices to determine the source of the difference in clinical performance