Chin augmentation using minimally invasive technique and bioplastique.
The plethora of problematic techniques for improving minor chin recessions has left the plastic surgeon inevitably uncertain of the most effective remedy. Research we began in 1968 has led us to the development of a new biphasic polymer and minimally invasive implantation techniques aimed at solving the soft-tissue deficiency dilemma. Bioplastique consists of inert, textured particles of critical dimension dispersed within a bioexcretable gel vehicle. Previous experimentation in rabbit ears has shown that the gel component is rapidly phagocytosed, excreted, and replaced by a fibrin matrix within 3 days. The matrix is then replaced by host collagen, gradually forming a stable encasement around each microparticle. Further evaluation has revealed that the implant resists migration and absorption. Based on these encouraging results, a clinical phase was initiated. Thirteen patients lacking chin prominence have subsequently been improved with Bioplastique implants. The infection rate was 0 percent, and other complications were minor. At 26 months, no evidence of migration or absorption has been observed, and the aesthetic results remain.