From SlashGear:
Lenovo has taken the wraps off what it says is the smallest ever workstation with ISV certification: the Lenovo ThinkStation P320 Tiny.
Source: Lenovo ThinkStation P320 Tiny packs raw power into a small body – SlashGear
This is ideal for a dental office. The small size can be put anywhere in a treatment room and I love the multiple monitors. I use 4 on my desk: Chart, Photos, Radiographs and Perio.