title: Engrafting periodontal fibroblasts with new 3-dimensional polylactide foams.
abstract: In clinical periodontics, "tissue engineering" techniques have been developed to guide the regenerative process following periodontal disease. We explored a new shaped biomaterial in order to promote cellular adhesion, proliferation and migration of periodontal cells. Granules of poly-D, L-lactide were foamed in specially designed moulds by a controlled gas-loading process. Explant cultures of periodontal tissue were seeded at different densities on the 3-dimensional scaffolds following analysis of cytotoxicity, cell proliferation and differentiation. The moulding procedure led to porous structures with predetermined tubes for cellular locomotion. Cells adhered to and populated the material's surface and inner cavities while retaining fibroblastic phenotype. An optimal ratio between cellular proliferation and mortality rate was achieved at a seeding density of > 10 6 cells/cm 3 scaffold. We designed modified polylactide scaffolds capable of acting as a stent and a cell carrier matrix. The foaming process is easy, cheap and suitable for commercial production.
authors.affiliation: Department for Operative Dentistry, Periodontology and Preventive Dentistry, Medical Faculty and University Hospital, RWTH Aachen, Pauwelstrasse 30, D-52074 Aachen, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Poll
authors.forename: P
authors.initials: P
authors.lastname: Buttler
authors.forename: H G
authors.initials: HG
authors.lastname: Graber
authors.forename: F
authors.initials: F
authors.lastname: Lampert
authors.forename: C
authors.initials: C
authors.lastname: Becker
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D002448:Cell Adhesion; D018929:Cell Culture Techniques / Q000379:methods*; D002465:Cell Movement; D049109:Cell Proliferation; D002478:Cells, Cultured; D005347:Fibroblasts / Q000378:metabolism*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D010519:Periodontium / Q000166:cytology*; D011091:Polyesters / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D011091:Polyesters; C033616:poly(lactide)