a soft tissue implant material is formed from biologically - compatible polymeric particles . the particles may have a diameter of up to about 500 microns and intraparticulate pores sized for ingrowth of soft tissue . the particles may have an inner core of a first biologically - compatible polymeric material and an outer layer generally surrounding the inner core , with the outer layer comprised of a second biologically - compatible polymeric material being hydrophilic and having a composition different from the composition of the first polymeric material . the material may be utilized with collagen or other matrix materials . this material may be used in a method of reforming soft tissues by implanting the material within soft body tissues to modify soft tissue defects such as wrinkles ; or oral gingival tissue defects and reshape soft tissue , e . g ., for urinary bladder inconvenience .