Isolation of Mesenchymal Stem Cells from Human Deciduous Teeth Pulp

Area of Science:

• Biomedical Engineering
• Stem Cell Biology
• Dental Research

Background:

• Mesenchymal stem cells (MSCs) from deciduous teeth offer potential for regenerative medicine.
• Predictors for successful MSC isolation and quality from dental pulp remain incompletely understood.

Purpose of the Study:

• To identify factors influencing the success rate of mesenchymal stem cell (MSC) isolation from human deciduous teeth pulp.
• To evaluate the impact of dental caries and pulpitis on MSC yield and characteristics.

Main Methods:

• Standardized protocol for MSC isolation from 161 extracted deciduous teeth.
• Analysis of success rates based on dental caries severity and presence of pulpitis.
• Multivariate regression modeling to determine significant predictors.
• Assessment of MSC colony doubling time and expression of inflammatory markers (cytokines, toll-like receptors).

Main Results:

• Overall MSC isolation success rate was 79.5% (128/161 colonies).
• Teeth without/mild-to-moderate dental caries and without pulpitis showed significantly higher successful MSC isolation rates (P < 0.001).
• Absence of dental caries (OR=4.741) and pulpitis (OR=9.111) were significant predictors of successful MSC procurement (P < 0.006).
• MSCs from inflamed pulps exhibited longer doubling times and higher expression of IL-6, MCP-1, and TLRs (P < 0.05).

Conclusions:

• Dental caries and pulpitis significantly reduce the success rate and alter the biological properties of MSCs derived from deciduous teeth.
• Deciduous teeth with carious lesions or pulpitis are less suitable for MSC isolation and processing.
• Optimizing tooth selection based on health status is crucial for efficient MSC procurement in regenerative therapies.