title: In vivo bioreactors for mandibular reconstruction.
abstract: Large mandibular defects are difficult to reconstruct with good functional and aesthetic outcomes because of the complex geometry of craniofacial bone. While the current gold standard is free tissue flap transfer, this treatment is limited in fidelity by the shape of the harvested tissue and can result in significant donor site morbidity. To address these problems, in vivo bioreactors have been explored as an approach to generate autologous prefabricated tissue flaps. These bioreactors are implanted in an ectopic site in the body, where ossified tissue grows into the bioreactor in predefined geometries and local vessels are recruited to vascularize the developing construct. The prefabricated flap can then be harvested with vessels and transferred to a mandibular defect for optimal reconstruction. The objective of this review article is to introduce the concept of the in vivo bioreactor, describe important preclinical models in the field, summarize the human cases that have been reported through this strategy, and offer future directions for this exciting approach.
authors.affiliation: Department of Bioengineering, Rice University, Houston, Texas, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Tatara
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Texas Dental Branch at Houston, Houston, Texas, USA.
authors.forename: M E
authors.initials: ME
authors.lastname: Wong
authors.affiliation: Department of Bioengineering, Rice University, Houston, Texas, USA mikos@rice.edu.
authors.forename: A G
authors.initials: AG
authors.lastname: Mikos
mesh_terms: D019149:Bioreactors / Q000145:classification*; D048091:Guided Tissue Regeneration / Q000295:instrumentation / Q000379:methods; D006801:Humans; D008336:Mandibular Diseases / Q000601:surgery; D063175:Mandibular Reconstruction / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods*; D023822:Tissue Engineering / Q000295:instrumentation* / Q000379:methods
keywords: bioengineering; bone graft(s); bone remodeling/regeneration; clinical studies/trials; craniomaxillofacial surgery; tissue engineering