Scaffold and growth factor selection in temporomandibular joint disc engineering

K. D. Allen, K. A. Athanasiou

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Temporomandibular joint disc tissue-engineering studies commonly fail to produce significant matrix before construct contraction. We hypothesized that poly-L-lactic acid (PLLA) non-woven meshes would limit contraction, allow for comprehensive mechanical evaluation, and maintain viability relative to polyglycolic acid (PGA) non-woven mesh controls. Additionally, we proposed that growth factor stimulation, while limiting contraction, would increase construct properties relative to previous reports. After 4 wks, cell proliferation and matrix deposition were similar between the two meshes, but PGA constructs had contracted significantly. Furthermore, only PLLA constructs could be tested in tension and compression. Additional PLLA constructs were formed, then treated with insulin-like growth factor-1 (10 ng/mL), transforming growth factor-beta 1 (5 ng/mL), or transforming growth factor-beta 3 (5 ng/mL). Transforming growth factor-beta 1 yielded the most cells, collagen, and glycosaminoglycans at 6 wks; these constructs also demonstrated improved mechanics. Analysis of these data demonstrated significant temporomandibular joint disc-engineering potential for PLLA and transforming growth factor-beta 1.

Original languageEnglish (US)
Pages (from-to)180-185
Number of pages6
JournalJournal of Dental Research
Volume87
Issue number2
DOIs
StatePublished - Feb 2008
Externally publishedYes

Keywords

  • Growth factors
  • Scaffolds
  • Temporomandibular joint
  • Tissue engineering

ASJC Scopus subject areas

  • Dentistry(all)

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