Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
Biomolecules. 2022 Mar 11;12(3):435. doi: 10.3390/biom12030435.
Different approaches to develop engineered scaffolds for periodontal tissues regeneration have been proposed. In this review, innovations in stem cell technology and scaffolds engineering focused primarily on Periodontal Ligament (PDL) regeneration are discussed and analyzed based on results from pre-clinical in vivo studies and clinical trials. Most of those developments include the use of polymeric materials with different patterning and surface nanotopography and printing of complex and sophisticated multiphasic composite scaffolds with different compartments to accomodate for the different periodontal tissues' architecture. Despite the increased effort in producing these scaffolds and their undoubtable efficiency to guide and support tissue regeneration, appropriate source of cells is also needed to provide new tissue formation and various biological and mechanochemical cues from the Extraccellular Matrix (ECM) to provide biophysical stimuli for cell growth and differentiation. Cell sheet engineering is a novel promising technique that allows obtaining cells in a sheet format while preserving ECM components. The right combination of those factors has not been discovered yet and efforts are still needed to ameliorate regenerative outcomes towards the functional organisation of the developed tissues.
已经提出了多种用于牙周组织再生的工程支架开发方法。在本综述中,主要根据临床前体内研究和临床试验的结果,讨论和分析了专注于牙周韧带(PDL)再生的干细胞技术和支架工程学的创新。这些进展大部分包括使用具有不同图案和表面纳米拓扑结构的聚合物材料,以及印刷具有不同隔室的复杂而精巧的多相复合支架,以适应不同牙周组织的结构。尽管在制造这些支架方面付出了更多的努力,并且它们无疑能够有效地引导和支持组织再生,但也需要适当的细胞来源,以提供新的组织形成,并从细胞外基质(ECM)提供各种生物和力学化学线索,为细胞生长和分化提供生物物理刺激。细胞片工程是一种新颖的有前途的技术,它允许以片状形式获得细胞,同时保留 ECM 成分。这些因素的正确组合尚未被发现,仍需要努力改善再生结果,以实现所开发组织的功能组织。