There's a pending shortage of dental professors as the baby boomers all retire - some schools actively pursue people with TA experience/ tutoring etc. This was specifically said to us at our NYU interview - "Many of you are here today because you expressed an interest in teaching or have TA experience".
I would definitely put it on your application. I don't think they would think you want to be a professor or teacher at all. Shows you know your stuff and are motivated enough to help others. All of my tutors have been med students.
I think I put mine under the volunteer section - OK, I really don't remember. I did, however, mention it in my essay and got a LOR for the professor I was TA-ing for.
Actually, I was told by a dean of admissions that some dental schools are looking for students who might be interested in teaching. He said it can be a challenge to find full time professors because they may not make as much as dentists in private practice. I was encouraged to include my tutoring experience on my application because of this. Also, my pre-dent advisor says it looks good on an application because it shows you like to help others.