Well if your domain is dentist in warren mi, why don't you focus in on the words in your domain?
Or if you want, make a page targeting each of the keywords.
Not sure what it is you want to know. Just use google's keyword tool and target the high traffic keywords for your area. Personally I've found that if a Google 7 box shows up you're not going to get a lot of clicks even on the first page.
I've got a couple of local auto repair websites like that and there on the first page and get like 15 clicks a month. That's with about 500-1000 searches and I rank for multiple keywords.
The google map kills local websites.