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Fractures: Bone Repair

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Updated: Nov 1, 2025

The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model

The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model

Published on: January 13, 2023

Accelerating Socket Repair via WNT3A Curtails Alveolar Ridge Resorption.

M Arioka^1,2, 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

This summary is machine-generated.

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.

Keywords:

Wnt3A protein alveolar bone loss alveolar process osteogenesis preclinical study tooth extraction

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Last Updated: Nov 1, 2025

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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.