Evolution of Maxillofacial Prosthetic Materials: Conventional, Digital, and Nanotechnology Perspectives

Abstract

Maxillofacial prosthetics is a specialized branch of prosthodontics concerned with the rehabilitation of patients presenting with congenital, traumatic, or oncologic defects of the craniofacial region through the use of artificial substitutes. Despite significant advances in materials science, the ideal maxillofacial prosthetic material that fully replicates the appearance and behavior of human skin has not yet been achieved. This narrative review provides a comprehensive synthesis of conventional, digital, and nanotechnology-based materials used in maxillofacial rehabilitation, with emphasis on their clinical performance, limitations, and future potential. Conventional materials, including acrylic resins, polyvinyl chloride derivatives, polyurethane elastomers, and silicone elastomers, are widely used in clinical practice. Among them, silicone elastomers remain the gold standard due to their superior biocompatibility, flexibility, and esthetic outcomes, although drawbacks such as limited tear strength and color instability persist. Recent advances in digital workflows, including computer-aided design/computer-aided manufacturing (CAD/CAM), three-dimensional (3D) printing, and digital color-matching systems, have improved precision, reproducibility, and efficiency of prosthesis fabrication. Furthermore, nanotechnology has introduced novel enhancements by incorporating nanoparticles such as titanium dioxide, zinc oxide, and silver into elastomeric matrices, improving mechanical strength, color stability, and antimicrobial properties. Emerging hybrid materials and artificial intelligence-driven approaches are expected to further transform the field. Continuous integration of material science and digital technologies is progressively improving functional and esthetic outcomes in maxillofacial prosthetic rehabilitation.