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In vivo bioengineered tooth formation using decellularized tooth bud extracellular matrix scaffolds
Weibo Zhang1, Pamela C Yelick1
1Department of Orthodontics, Division of Craniofacial and Molecular Genetics, Tufts University School of Dental Medicine, Boston, MA 02111, United States.
Stem Cells Translational Medicine
|December 27, 2024
Summary
Researchers developed bioengineered tooth buds using decellularized tooth extracellular matrix scaffolds. This preclinical study shows promise for a biological tooth replacement therapy, offering a potential alternative to traditional dental implants.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Dental Research
Background:
- Dental implants have high success rates but face long-term challenges like bone resorption and peri-implantitis.
- Current synthetic implants have a limited lifespan of approximately 15 years.
- Developing biological tooth substitutes could overcome limitations of current dental implants.
Purpose of the Study:
- To create and validate a bioengineered tooth bud for potential clinical use in humans.
- To assess the feasibility of using decellularized tooth extracellular matrix (dTB ECM) scaffolds for tooth regeneration.
- To evaluate the therapeutic potential of bioengineered teeth as an alternative to synthetic implants.
Main Methods:
- Bioengineered tooth buds were created by seeding dTB ECM scaffolds with specific human and porcine cells.
- Constructs included human dental pulp cells, porcine dental epithelial cells, and human umbilical vein endothelial cells.
- The bioengineered tooth buds were implanted into the mandibles of Yucatan minipigs for 2 or 4 months.
Main Results:
- Tooth-like tissues, including periodontal ligament, formed within the cell-seeded dTB ECM constructs.
- Successful integration and development of bioengineered tissues were observed in the animal model.
- The study demonstrated the formation of functional, tooth-supporting structures.
Conclusions:
- This preclinical study validates a bioengineered tooth bud approach as a clinically relevant therapy.
- The developed method offers a promising biological alternative to conventional titanium dental implants.
- Further research may lead to regenerative solutions for tooth loss.
