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Updated: Jun 4, 2026
08:14
Isolation and Culture of Dental Epithelial Stem Cells from the Adult Mouse Incisor
Published on: May 1, 2014
Molecular genetics of supernumerary tooth formation
1Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts 02115, USA. xiuping_wang@hsdm.harvard.edu
Genesis (New York, N.Y. : 2000)
|February 11, 2011
Summary
Supernumerary tooth formation, or extra teeth, is not well understood. Studying other animals with continuous tooth replacement offers insights into human dental anomalies and potential regeneration strategies.
Area of Science:
- Developmental Biology
- Genetics
- Comparative Anatomy
Background:
- Supernumerary tooth formation is a common dental anomaly, with multiple occurrences often linked to genetic factors.
- Existing mouse models have limitations in replicating human supernumerary tooth development.
- The precise molecular mechanisms driving supernumerary teeth remain unclear.
Purpose of the Study:
- To explore the aetiology and molecular mechanisms of supernumerary tooth formation.
- To investigate the utility of alternative model systems for studying dental anomalies.
- To identify pathways relevant to tooth regeneration and bioengineering.
Main Methods:
- Comparative analysis of tooth development across different vertebrate species (fish, snake, lizard, ferret).
- Review of genetic pathways implicated in tooth formation, including Wnt/β-catenin signaling.
- Integration of findings with advances in stem cell biology and tissue engineering.
Main Results:
- Inactivation of Apc or Wnt/β-catenin signaling leads to supernumerary teeth in humans and mice.
- Comparative studies in species with continuous tooth replacement provide insights into successional tooth development.
- Understanding these mechanisms is crucial for addressing human dental anomalies.
Conclusions:
- Studying diverse model systems is essential for elucidating supernumerary tooth formation.
- Advances in this field may facilitate future tooth regeneration and bioengineering applications.
- Further research into genetic and molecular pathways is warranted.
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