Compression resistance of four interocclusal recording materials

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Prosthodontics

Background:

• Elastomeric impression materials are widely used for interocclusal records in dentistry.
• Material deformation under compressive forces can lead to inaccurate dental articulations and flawed restorations.
• Ensuring material stability is vital for reliable fabrication of dental prosthetics.

Purpose of the Study:

• To compare the compressive deformation of four elastomeric interocclusal recording materials.
• To evaluate the influence of material thickness on deformation under a standardized load.
• To identify materials offering superior dimensional stability for dental applications.

Main Methods:

• Four elastomeric materials (Blu-Mousse, Stat BR, Ramitec, Regisil) were tested.
• Samples of varying thicknesses (2 mm, 5 mm, 10 mm, 20 mm) were subjected to a 25 N compressive load.
• Compressive distortions were measured to assess material deformation.

Main Results:

• All tested materials exhibited clinically significant compressive distortions at various thicknesses.
• Blu-Mousse vinyl polysiloxane showed the highest resistance to compression across all tested thicknesses.
• Blu-Mousse's resistance was significantly greater than other materials at 5, 10, and 20 mm thicknesses (p < 0.05).

Conclusions:

• Material selection is critical to minimize deformation in interocclusal records.
• Blu-Mousse offers superior dimensional stability compared to Stat BR, Ramitec, and Regisil under compressive load.
• These findings support the use of Blu-Mousse for accurate dental cast mounting and restoration fabrication.