Tyoon: Getting an entry level position in patent prosecution (atty or agent) is tough for everybody, even in "hot" arts like EE and CS. It was togh enough in the late 90s and worse now. It will take a lot of patience, diligence, and dumb-luck, being in the right place at the right time, and a firm that understands that you in fact know more than drilling, filling,extracting, and generaly inflicting pain. Your chances may be better with firms that are not just prosecution mills. But absent a unique fit, this will require a JD. But the positions are hard to get. There are so many people hanging-up their lab coats, smocks, whatever. A lot (but not all) firms would look at a JD + MD/DDS/PhD before a JD + BS. IMO there are no absolutes, too many firms w/ too many different "business models".
I'd ask yourself a simple question: "are you OK with taking, and working, a year to find that entry slot?" If not, forget it. IMO to assume less would be self delusion.
If you do forge ahead and DO find a slot, how your are treated will largely depend on where you land that slot. All 1st and even 2nd years will get some of the dirty grunt work. I spent my first New years eve as an atty in the office (but did get out at 11:00 PM), and my first July 4th drafting a brief for an interference. Such events were rare, only some of the work could have been done by an agent, I was never treated like a plebe or a frat pledge, and I was paid well (40% more than I was making in R&D to start). Pay depends on the market and the firm, and of course whether you are an attorney or agent (a firm may find a way to loose less $$$ on 1st and 2nd year attorneys).
How about selling dental equipment or, if physically able, doing in-services? Expert witness in dental malpractice suits? Insructing in a school for hygenists or assistants? Pay may not be great. But based on personal experience, any pay check is better than no pay check.
All the best!