Development of a 3D printable maxillofacial silicone: Part I. Optimization of polydimethylsiloxane chains and cross-linker concentration

Abstract

The optimum combination of mechanical properties implies the use of one of these formulations for further evaluation in a 3D printer capable of actively mixing and extruding 2-component, room temperature vulcanization silicone.

Development of a 3D printable maxillofacial silicone: Part II. Optimization of moderator and thixotropic agent

“…The base A from the previous study was used, which was formed of 70% long, 20% medium, and 10% short PDMS chains, each with 20% w/w surface treated silica filler. 6 Base E was developed with 80% long, 15% medium, and 5% short PDMS chains, each with 20% w/w surface-treated silica filler to further increase the amount of long-chain PDMS.…”

“…5 Investigations into the initial development of a biocompatible silicone elastomer suitable for facial prostheses have been described. 6 The formulation of base A (70% long, 20% medium, and 10% short polydimethylsiloxane [PDMS] chains) with 2.5% catalyst and 5% cross-linker was chosen from among the 20 formulations investigated with varying amounts of long-, medium-, and short-chained PDMS and 5 concentrations of cross-linker. In this study, the silicone formulation was divided into 2 parts before printing through a customized 3D printer.…”

Maxillofacial prostheses challenges in resource constrained regions

“…Current research efforts in maxillofacial prostheses fabrication and construction has incorporated computer aided design/computer aided manufacturing (CAD/CAM); rapid prototyping and additive manufacturing, also known as 3D Printing [9,56,77,[79][80][81][82][83][84] .…”

Additive Manufacturing: A Comparative Analysis of Dimensional Accuracy and Skin Texture Reproduction of Auricular Prostheses Replicas

“…Little has been published about RM of definitive auricular prostheses, because printable silicone is still in development …”

“…An indirect mold made using a digitally derived prototype--called rapid prototyping (RP) 14 Little has been published about RM of definitive auricular prostheses, because printable silicone is still in development. 15 In contrast to RT, 16 RP implies the physical production of the prosthesis prototype and its try-in on the patient. This prototype serves as a positive pattern to produce the negative mold (i.e., to be filled with the medical silicone).…”