Forgive me, but that is incredibly careless, potentially dangerous advice. Just because something worked for you does NOT mean it will work for someone else. You must take greater care when doling out advice (especially damaging and damning advice) with a grain of salt.
OP, it is no secret that the RC subsection is of increasingly greater importance to the adcoms. It has been shown to be a great (perhaps #1) predictor of success in dental school, primarily the first two years (makes sense, we will be reading copious amounts). To that effect, if you are at all concerned, make your best effort to do well on this subsection so that you are nothing but confident on exam day. YES, do practice exams, review your mistakes, test out strategies, and if you really want, read some articles. Do not not prep for this section.
To answer your question, I personally did not prep by reading articles; some have and say it's worked, others disagree. There is a lot of debate on SDN regarding that matter. I think however, that by reading articles, at the very least you would increase speed, which, coupled with comprehension are critical to success. Hopefully you will continue achieving a higher level of both. I wouldn't worry too much about challenging vocab unless English is not your first language. If that is the case, I would study common Latin roots/prefixes/suffixes. Best of luck!
