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Accelerating Socket Repair via WNT3A Curtails Alveolar Ridge Resorption
M Arioka1,2, I M Dawid1, P L Cuevas1
1Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA.
Journal of Dental Research
|June 23, 2021
Summary
Accelerating tooth socket healing with WNT3A in rodents significantly reduced bone loss after extraction. This discovery offers a potential new strategy for preserving alveolar ridge dimensions for dental implant procedures.
Area of Science:
- Biomedical Engineering
- Oral and Maxillofacial Surgery
- Regenerative Medicine
Background:
- Tooth extraction leads to alveolar ridge resorption, complicating dental implant reconstructions.
- Significant ridge dimensional changes occur rapidly post-extraction, impacting treatment outcomes.
Purpose of the Study:
- To investigate the correlation between extraction socket healing rate and alveolar ridge resorption extent.
- To explore the role of Wnt signaling in socket repair and bone preservation.
Main Methods:
- Utilized micro-computed tomography, histology, and immunohistochemistry in rodent models.
- Analyzed maxillary molar extraction sockets in young and osteoporotic animals.
- Assessed Wnt-responsive osteoprogenitor cells and osteoclast activity.
Main Results:
- Faster socket repair in young rodents correlated with more Wnt-responsive cells.
- WNT3A delivery to osteoporotic rodents increased Wnt-responsive cells and accelerated healing.
- WNT3A treatment significantly reduced alveolar ridge resorption post-extraction.
Conclusions:
- Enhanced socket repair via WNT3A causally links to preserved alveolar ridge dimensions.
- WNT3A promotes socket healing by increasing Wnt-responsive osteoprogenitor cells.
- This study provides a potential therapeutic approach for mitigating post-extraction bone loss.
