NEW DENTAL OFFICE logo design

Salt Lake City Dental Center

Young new general dentist starting up a practice in downtown Salt Lake City. Looking to establish a modern practice, implementing the newest technology and services available to my clients.

Will be marketing to the general public in a large city and already saturated market. Although the area already has many dentists, most are from an older generation and do not utilize logos/websites, etc, so this will set us apart from the others.
Most dental marketing is aimed towards women, who then bring in their children and drag in their husbands.

Need a logo for my new dental office, "Salt Lake City Dental Center."

I would like a simple yet versatile logo to be used in advertising, websites, business cards, etc.
1. The words "Salt Lake City" should be smaller than "Dental Center." "Dental Center" should be the most visible.
2. Include the tag-line "Restoring Your Smile," but the logo should still look good with or without it (I would like to have the ability to remove it for certain situations)
3. It should also look good with one or more Dentists' names below it, but you don't need to incorporate the names into the design

To get a general idea, here are some of the logos I liked from the 99designs website:
http://99designs.com/logo-design/store/6002
http://99designs.com/logo-design/store/412
http://99designs.com/logo-design/store/425
http://99designs.com/logo-design/store/4670
http://99designs.com/logo-design/store/8246
http://99designs.com/logo-design/store/1011

Looks like I'm drawn to logos that incorporate the word "Center" into them somehow, with circles/spheres, but don't let that limit you.

4. Lastly, please AVOID USING A TOOTH in the design, unless it is really awesome and subtle enough that some people won't notice. For an example of what's acceptable (I don't think they even meant it to look like teeth):
http://99designs.com/logo-design/store/8952

Will require .ai, .jpeg
No stock images or clip art.