Start out by printing your polished and proof-read resume and cover letter out on nice, thick paper. Don’t use your everyday copy/print paper. I mention proof-read (by multiple people) because hygiene is very detail-oriented, so if you have typos or grammatical errors, your resume may be passed over. Next, I would map out the area (Google maps) of the offices you are dropping your resume off to. You don’t want to stop by the same office twice (again, attention to detail), so check them off as you go. Lastly, don’t expect an interview on the spot. Dental offices are busy and have a schedule to adhere to and you don’t want to come across as demanding. But just in case there happens to be cancellations in the schedule and someone can chat with you, dress appropriately. Business professional is the way to go. I strongly suggest you don’t wear scrubs. Best of luck!
I had to drop off resumes when I first started looking for a job and I did pretty much just what Kara said in her response. I dressed in a nice blouse and dress pants, and looked online before I went anywhere. I think it is very helpful to know what offices you want to go to and where they are before you get in your car to go. I tried just driving around and dropping off resumes at offices I saw, but it was more difficult because some office were closed, on lunch, or close to closing. It was nice when I researched a little bit so I knew what offices were open when. I did not get any interviews right on the spot, but some places ended up calling me after! Good luck!