Modern trends in modeling of extra-oral defects

Abstract

Maxillofacial prostheses are usually fabricated on the basis of conventional impressions and techniques. The extent to which the prosthesis reproduces normal facial morphology depends on the clinical judgment and skill of the individual fabricating the prosthesis. Recently, as a result of advances in technology, various computer-aided design and manufacturing techniques have been successfully introduced for the automated fabrication of maxillofacial prostheses. These systems are able to provide more consistently accurate reproduction of facial morphology.

Impressions in extra-oral maxillofacial prosthesis- An overview

“…43 The common problems related with conventional impressions include patient discomfort and distortion of the facial soft tissues. 44 The data can now be obtained with the recent advances like :-Three-dimensional anatomic data (3-D facial measurements) using scanning techniques like computerized tomography, magnetic resonance imaging, 45 3-D optical scanning, generation of a 3-D Computer Model (Blue-print) 46 and manufacturing a physical prototype by computer numerically controlled (CNC) milling and Rapid prototyping. 44…”

CAD/CAM‐Assisted Auricular Prosthesis Fabrication for a Quick, Precise, and More Retentive Outcome: A Clinical Report

“…Prosthetic rehabilitation of auricular defects is a good alternative option; however, the proficiency of the clinician and technician determines the degree to which the prosthesis precisely replicates the missing structure . Traditionally, a wax pattern of the missing ear is sculpted and invested to fabricate the prosthesis .…”