hello dentb'lore
Concerning some other questions they migth ask you , I remember they asked me if I was going to practice someday, for how long I was going to stay in the area, if I could do some front desk work, if I could use the computer's programs, etc. You might be interviewed not only by the dentist but also by the staff because the staff "has to like you" to work "with you". Be aware of that.
Dress nicely, nothing too showish, practice your answers and make one or two questions to your interviewer, such us : how many patients do you see in a day? Do you see a lot of kids?
At the time you negociate your salary wait and see what he offers or if he asks you how much you want to earn, give a range ( 10-13 dollars/hour) plus benefits if you are eligible.
If you want to work only part time, you could be beneficial to him in that he doesn't have to pay you any benefits because you do not work enough hours to be eligible.
That is all I can think about now.
Try not to be nervous, and hope for the best.
Good luck.