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A New Classification of Three-Dimensional Printing Technologies: Systematic Review of Three-Dimensional Printing for Patient-Specific Craniomaxillofacial Surgery

Jacobs, Carly A. B.A.; Lin, Alexander Y. M.D.

Plastic and Reconstructive Surgery: May 2017 - Volume 139 - Issue 5 - p 1211-1220
doi: 10.1097/PRS.0000000000003232
Pediatric/Craniofacial: Original Articles
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Background: Three-dimensional printing technology has been advancing in surgical applications. This systematic review examines its patient-specific applications in craniomaxillofacial surgery.

Methods: Terms related to “three-dimensional printing” and “surgery” were searched on PubMed on May 4, 2015; 313 unique articles were returned. Inclusion and exclusion criteria concentrated on patient-specific surgical applications, yielding 141 full-text articles, of which 33 craniomaxillofacial articles were analyzed.

Results: Thirty-three articles included 315 patients who underwent three-dimensional printing–assisted operations. The most common modeling software was Mimics, the most common printing software was 3D Systems, the average time to create a printed object was 18.9 hours (range, 1.5 to 96 hours), and the average cost of a printed object was $1353.31 (range, $69.75 to $5500). Surgical procedures were divided among 203 craniofacial patients (205 three-dimensional printing objects) and 112 maxillofacial patients (137 objects). Printing technologies could be classified as contour models, guides, splints, and implants. For craniofacial patients, 173 contour models (84 percent), 13 guides (6 percent), two splints (1 percent), and 17 implants (8 percent) were made. For maxillofacial patients, 41 contour models (30 percent), 48 guides (35 percent), 40 splints (29 percent), and eight implants (6 percent) were made. These distributions were significantly different (p < 0.0001). Four studies compared three-dimensional printing techniques to conventional techniques; two of them found that three-dimensional printing produced improved outcomes.

Conclusions: Three-dimensional printing technology in craniomaxillofacial surgery can be classified into contour models (type I), guides (type II), splints (type III), and implants (type IV). These four methods vary in their use between craniofacial and maxillofacial surgery, reflecting their different goals. This understanding may help advance and predict three-dimensional printing applications for other types of plastic surgery and beyond.

St. Louis, Mo.

From the Division of Plastic Surgery, Saint Louis University School of Medicine; and the SSM Health Cardinal Glennon Children’s Hospital at Saint Louis University.

Received for publication May 15, 2016; accepted September 30, 2016.

Presented at the 73rd Annual Meeting of the American Cleft Palate–Craniofacial Association, in Atlanta, Georgia, April 4 through 9, 2016.

Disclosure:The authors have no financial interest to declare in relation to the content of this article.

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Alexander Y. Lin, M.D., St. Louis Cleft-Craniofacial Center, Division of Plastic Surgery, SSM Health Cardinal Glennon Children’s Hospital Saint Louis University School of Medicine, 1465 South Grand Boulevard, St. Louis, Mo. 63104-1095, aylin@slu.edu

Copyright © 2017 by the American Society of Plastic Surgeons