Stem Cell Applications in Dental Tissue Regeneration
Summary
Stem cell applications in dental tissue regeneration harness the capacity of various postnatal and embryonic stem cell populations to restore or replace damaged dental structures. Central to this endeavour are mesenchymal stem cells (MSCs) derived from dental pulp, apical papilla and periodontal ligament, which exhibit self-renewal and multipotent differentiation towards odontoblast-like, cementoblastic and osteoblastic lineages. These cells can be combined with biomimetic scaffolds or hydrogels that mimic the extracellular matrix to support cell survival, proliferation and differentiation in situ. Signalling pathways such as fibroblast growth factor (FGF), WNT and TGF-β guide lineage commitment and tissue morphogenesis, while host vascular and neural integration is promoted via angiogenic and neurotrophic factor secretion. Preclinical models have demonstrated de novo dentin–pulp complex formation, periodontal ligament regeneration and even bioengineered tooth root–crown complexes capable of mechanical loading. Current challenges include ensuring predictable cell behaviour, immune compatibility, long-term functional integration and scalable manufacturing under good-practice conditions. Emerging strategies focus on niche modulation through controlled release of molecular cues, direct tissue reprogramming and exploration of novel stem cell sources such as exfoliated deciduous tooth cells. Together, these approaches are converging towards clinically translatable protocols for restoring tooth vitality and function.
Research from Nature Portfolio
Recent studies have elucidated how the neural microenvironment regulates dental MSC homeostasis through growth-factor signalling. In an adult mouse incisor model, sensory nerves were shown to secrete FGF1, which engages FGFR1 on mesenchymal stem cells and activates an mTOR–autophagy axis essential for stem cell maintenance and continuous tissue renewal. Modulating this pathway restored incisor growth in genetic models with FGFR1 deficiency, revealing potential targets to enhance in situ regeneration of dental tissues. Another contribution mapped the cellular landscape of mouse and human teeth at single-cell resolution, identifying distinct stem and progenitor subpopulations within both epithelial and mesenchymal compartments. This cell atlas revealed conserved and species-specific lineages underlying growth and differentiation, offering a blueprint for engineering the complex cellular hierarchy required for organotypic tooth regeneration.
Stem Cell Applications in Dental Tissue Regeneration publication trend
The graph below shows the total number of articles in stem cell applications in dental tissue regeneration across all publications each year (not limited to Nature Index journals).
Technical terms
Mesenchymal stem cells (MSCs): multipotent stromal cells capable of differentiating into osteogenic, odontogenic and cementogenic lineages essential for dental tissue repair.
Apical papilla: a stem cell–rich tissue at the root tip involved in root development and a source of SCAP (stem cells from apical papilla).
Mechanotransduction: the process by which cells convert mechanical stimuli into biochemical signals, influencing stem cell fate and tissue organisation.
WNT signalling: a conserved pathway regulating stem cell proliferation and differentiation during tooth development and regeneration.
Autophagy: a cellular degradation mechanism that maintains stem cell homeostasis and supports tissue renewal under stress.
Amelogenesis: the formation and maturation of tooth enamel by specialised ameloblast cells guided by specific signalling cascades.
References
- Sensory nerve niche regulates mesenchymal stem cell homeostasis via FGF/mTOR/autophagy axis. Nature Communications (2023).
- Dental cell type atlas reveals stem and differentiated cell types in mouse and human teeth. Nature Communications (2020).
- FGF signaling modulates mechanotransduction/WNT signaling in progenitors during tooth root development. Bone Research (2024).
- MAST4 regulates stem cell maintenance with DLX3 for epithelial development and amelogenesis. Experimental & Molecular Medicine (2024).
- Mesenchymal Stem Cell-Mediated Functional Tooth Regeneration in Swine. PLOS ONE (2006).
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