Contact angles of contemporary type 3 impression materials.

Area of Science:

• Dental Materials Science
• Surface Chemistry
• Biomaterials Engineering

Background:

• Accurate dental impressions are crucial for prosthodontic success.
• Material hydrophilicity influences accuracy and detail reproduction.
• Understanding surface properties of dental impression materials (DIMs) is essential.

Purpose of the Study:

• To investigate and compare the contact angles of various type 3 dental impression materials.
• To evaluate the hydrophilicity of different DIM formulations, including polyvinyl siloxane, C-silicone, polyether, and hybrid types.

Main Methods:

• Continuous measurement of contact angles using deionized water on thin layers of freshly mixed DIMs.
• Testing involved 4 µL of water on 50 µm thick DIM layers over 20 seconds.
• Statistical analysis (P < .05) was performed on triplicate measurements.

Main Results:

• Contact angles varied significantly, ranging from 76.1° to 119.5° at 0 seconds and 11.7° to 74.7° at 5 seconds.
• Siloxane-based DIMs demonstrated significantly higher contact angles compared to other tested materials at both 0 and 5 seconds.
• New DIMs with a polyether backbone indicated promising hydrophilic properties.

Conclusions:

• Material choice significantly impacts surface wettability and hydrophilicity.
• Polyether-based DIMs show potential for improved accuracy due to their enhanced hydrophilic characteristics.
• Further research into DIMs with superior wetting properties is warranted for clinical applications.