Biophysical Properties of Three Light-cured Pulp Capping Materials.

Area of Science:

• Biomaterials Science
• Dental Materials Research
• Regenerative Dentistry

Background:

• Photoactivated materials are used for dentin-pulp complex treatments.
• Assessing their biocompatibility and bioactivity is crucial for clinical success.
• Theracal, Hidrox-cal, and Ultra-Blend are examples of such materials.

Purpose of the Study:

• To evaluate the cell viability, degree of conversion, compressive strength, and bioactive potential of three photoactivated dentin-pulp complex materials.
• To compare the performance of Theracal, Hidrox-cal, and Ultra-Blend.
• To determine the suitability of these materials for pulp capping applications.

Main Methods:

• Cell viability assessed using MTT assay.
• Degree of conversion analyzed by Raman spectroscopy.
• Compressive strength tested on a universal testing machine.
• Bioactive potential evaluated via SEM and Raman spectroscopy after simulated body fluid immersion.

Main Results:

• Theracal showed the lowest cell viability compared to Hidrox-cal and Ultra-Blend.
• Hidrox-cal exhibited a higher degree of conversion, similar to Ultra-Blend.
• No significant differences in compressive strength were found among the materials.
• Limited crystalline structure formation was observed for Theracal and Ultra-Blend, indicating restricted bioactivity.

Conclusions:

• Light-cured pulp capping materials possess adequate mechanical properties but demonstrate limited bioactivity and variable cytotoxicity.
• Further research is needed to improve the biocompatibility and bioactivity of these dental materials.
• Clinical performance may be affected by the observed cytotoxicity and limited regenerative potential.