Definitely talk about it... But, beware. Many of the techs and other undergrad students often know very little about what they do. For example, I do a lot of cell culture and it would be easy to get away with just knowing that. But you need to understand EXACTLY what you are doing and be able to discuss it on a professional level....
For example, I am asked; "Tell me about your research?" I say. "Well I have been studying Molecular mechanisms of pathogenesis of Porphyromonas gingivalis." They say, "Can you tell me about your findings, your methods, and how is this related to dentistry?" When you have not read much and are not up to speed you could get tongue tied.
The reason why I say this....
When I started my research, it was tough learning everything from techniques to WHY we actually are doing things. I mean you are working with DMD/PhDs and PhD students who have been at it for years. It is a lot to take in.
The head of the Oral Biology Department (who is also on the board of dental school admissions) told me it is paramount to understand why I do things vs. how to do them.
In a nutshell.... Know your, sh-stuff.
-C