Particles are provided for use in therapeutic cosmetic and/or reconstructive procedures to augment defects in tissue to restore contours and/or function. The particles include poly[bis(trifluoroethoxy)phosphazene] and/or a derivatives thereof which may be present throughout the particles or within an outer coating of the particles. The particles may also include a core having a hydrogel formed from an acrylic-based polymer. Such particles may be provided to a user in various colors or with customized coloration to match desired tissues. Moreover, such particles may be loaded to provide localized treatment with an active component agent in specific clinical uses. Particles of the present invention may further be provided or used in conjunction with tissue adhesives or photoinitiator agents that may be activated by electromagnetic radiation or other energy sources to allow post-implantation cross-linking of the polymeric particles to cause their amalgamation to maintain their shape and location following implantation.