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Advanced Engineering Strategies for Periodontal Complex Regeneration.

ABSTRACT: The regeneration and integration of multiple tissue types is critical for efforts to restore the function of musculoskeletal complex. In particular, the neogenesis of periodontal constructs for systematic tooth-supporting functions is a current challenge due to micron-scaled tissue compartmentalization, oblique/perpendicular orientations of fibrous connective tissues to the tooth root surface and the orchestration of multiple regenerated tissues. Although there have been various biological and biochemical achievements, periodontal tissue regeneration remains limited and unpredictable. The purpose of this paper is to discuss current advanced engineering approaches for periodontal complex formations; computer-designed, customized scaffolding architectures; cell sheet technology-based multi-phasic approaches; and patient-specific constructs using bioresorbable polymeric material and 3-D printing technology for clinical application. The review covers various advanced technologies for periodontal complex regeneration and state-of-the-art therapeutic avenues in periodontal tissue engineering.

SUBMITTER: Park CH

PROVIDER: S-EPMC5456552 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Advanced Engineering Strategies for Periodontal Complex Regeneration.

Park Chan Ho CH Kim Kyoung-Hwa KH Lee Yong-Moo YM Seol Yang-Jo YJ

Materials (Basel, Switzerland) 20160118 1

The regeneration and integration of multiple tissue types is critical for efforts to restore the function of musculoskeletal complex. In particular, the neogenesis of periodontal constructs for systematic tooth-supporting functions is a current challenge due to micron-scaled tissue compartmentalization, oblique/perpendicular orientations of fibrous connective tissues to the tooth root surface and the orchestration of multiple regenerated tissues. Although there have been various biological and b ...[more]

PMID: 28787856

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Project description:Dental follicle cells (DFCs) are a heterogeneous population that exhibit a variety of phenotypes. However, it remains unclear whether DFCs can maintain stem cell characteristics, or mediate tissue-regeneration to form single or complex tissues in the periodontium, after long-term culturing. Therefore, DFCs were isolated from human impacted molars (HIM-DFCs), passaged >30 times, and then evaluated for their heterogeneity and multipotential differentiation. Morphology, proliferation, epitope profile, and mineralization characteristics of clones derived from single HIM-DFCs in vitro were also assayed. HIM-DFCs (passage #30) were found to be positive for the heterogeneous markers, Notch-1, stro-1, alkaline phosphomonoesterase (ALP), type I collagen (COL-I), type III collagen (COL-III), and osteocalcine. Moreover, passage #30 of the HDF1, 2, and 3 subclone classes identified in this study were found to express high levels of the mesenchymal stem cells markers, CD146 and Stro1. HDF3 subclones were also associated with the strongest ALP staining detected, and strongly expressed osteoblast and cementoblast markers, including COL-I, COL-III, bone sialoprotein (BSP), and Runx2. In contrast, HDF1 subclone analyzed strongly expressed COL-I and COL-III, yet weakly expressed BSP and Runx2. The HDF2 subclone was associated with the strongest proliferative capacity. To evaluate differentiation characteristics in vivo, these various cell populations were combined with ceramic bovine bone and implanted into subcutaneous pockets of nude mice. The 30th passage of subclone HDF1 and 3 were observed to contribute to fiber collagens and the mineralized matrix present, respectively, whereas HDF2 subclones were found to have a minimal role in these formations. The formation of a cementum-periodontal ligament (PDL) complex was observed 6 weeks after HIM-DFCs (passage #30) were implanted in vivo, thus suggesting that these cells maintain stem cell characteristics. Therefore, subclone HDF1-3 may be related to the differentiation of fibroblasts in the PDL, undifferentiated cells, and osteoblasts and cementoblasts, respectively. Overall, this study is the first to amplify HIM-DFCs and associated subclones with the goal of reconstructing complex or single periodontium. Moreover, our results demonstrate the potential for this treatment approach to address periodontal defects that result from periodontitis, or for the regeneration of teeth.

Dataset Information

Advanced Engineering Strategies for Periodontal Complex Regeneration.

Publications

Advanced Engineering Strategies for Periodontal Complex Regeneration.

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