There are support structures available for 3D printing.

Release: Creo Parametric 5.0.0.0

You can also watch this video on the PTC Learning Connector: Support Structures Are Available for 3D Printing

Support structures are auxiliary structures that support the models that you print in additive manufacturing. When you connect to a printer through a Materialise build processor, you can generate support structures using Creo Parametric. When you generate support structures, default support structures for the entire tray assembly are generated. You can edit the support structures for the tray, or individual support structures. Support structures are defined by parameters such as for support structure shape, and for the way the edges of the model are handled. The parameters are grouped into profiles. For more information, search for support structures in the Help.