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Updated: Aug 12, 2026
04:07
Isolation of Epithelial Cells from Human Dental Follicle
Published on: November 5, 2021
Development of transplanted pulp tissue containing epithelial sheath into a tooth-like structure
D M Lyaruu1, E J van Croonenburg, M A van Duin
1Department of Oral Cell Biology, ACTA, Vrije Universiteit, Amsterdam, The Netherlands.
Summary
Neonatal hamster dental pulp with epithelial cells can form tooth-like structures, including dentine and odontoblasts, in vivo. This finding may explain tooth-like structures observed in infants after natal tooth extraction.
Area of Science:
- Developmental biology
- Oral biology
- Regenerative medicine
Background:
- Neonatal dental pulp contains undifferentiated cells.
- Epithelial cell remnants may play a role in tooth development.
- Understanding in situ tissue regeneration is crucial for regenerative dentistry.
Purpose of the Study:
- To investigate the potential of neonatal dental pulp with residual epithelial cells to induce tooth-like structure formation in vivo.
- To explore the regenerative capacity of dental pulp tissue in a transplantation model.
Main Methods:
- Maxillary neonatal hamster molar pulps with adhering epithelial cells were transplanted submucosally into recipient mothers.
- Transplanted tissues were retrieved after 2-8 weeks for histological analysis using light microscopy.
Main Results:
- Developing tooth-like structures were observed within 2 weeks of transplantation.
- These structures featured mineralized tubular dentine, predentine, and a vascularized pulp-like chamber lined with odontoblast-like cells.
- Enamel and root formation were not observed.
Conclusions:
- Intact neonatal dental pulp containing epithelial cell remnants can regenerate tooth-like structures in situ.
- This regenerative capacity highlights the potential of pulp tissue in developmental processes.
- The findings may offer an explanation for spontaneous tooth-like structure development post-natal tooth extraction in infants.
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