The Effects of the Incorporation of Nano-Hydroxyapatite on Physico-Chemical Properties of Calcium-Enriched Mixed Cement

Area of Science:

• Biomaterials Science
• Dental Materials
• Nanotechnology

Background:

• Calcium-enriched mixed (CEM) cement is used in endodontics but needs improved physico-chemical properties.
• Optimizing CEM cement properties is crucial for better clinical outcomes.

Purpose of the Study:

• To evaluate the effect of nano-hydroxyapatite (nHAP) incorporation on CEM cement's physico-chemical characteristics.
• To determine the optimal nHAP concentration for enhancing CEM cement properties.

Main Methods:

• CEM cement was mixed with 5% and 10% nHAP powder.
• Control samples of CEM cement without nHAP were prepared.
• Key properties assessed included setting time, compressive strength, solubility, and pH.

Main Results:

• The addition of 5% nHAP significantly increased the initial setting time and 24-hour compressive strength.
• Both 5% and 10% nHAP concentrations significantly elevated the pH of the CEM cement.
• Short-term compressive strength was notably improved with 5% nHAP.

Conclusions:

• Incorporating 5% nHAP into CEM cement enhances its pH, potentially improving antimicrobial activity.
• Improved short-term compressive strength with 5% nHAP aids in withstanding oral forces.
• Selecting appropriate nHAP concentrations is key to optimizing CEM cement properties for endodontic use.