New site setup

Hi

I’m planning to use Enfold for another client but have a quick question. The client’s website http://www.theimplantcentre.com is targeted at 2 very different user groups; patients & dentists. You currently come into the patient side of the site and you access the dentist side by clicking on the ‘Information for dentists’ in the top right hand corner. The dentist site is delivered via http://www.theimplantcentre.com/dentists. When building the two sites they will both need their own homepages and menu structure. How do you recommend I go about setting this up on the server / within wordpress? Ideally I’d like to be able to manage both sites from within the one wordpress login but I suppose it’s not essential. Should I continue to use http://www.theimplantcentre.com/dentists or would it make more sense having http://www.dentists.theimplantcentre.com? Any thoughts and advice would be much appreciated.

Regards
Rupert