I really like the abstract part of the logo (gives it a modern feel), being it's a tooth but I can see it's two people as well.
I would like you incorporate the three colours from the http://www.mydentalteam.com.au/ logo Hence the green should be lighter, a light blue and also a navy blue, see how you go.
The font feels a bit too formal, could you soften it up a bit to make it feel fresh.