Dimensional stability and surface hardness of inter-occlusal recording materials

Area of Science:

• Dental Materials Science
• Prosthodontics
• Biomaterials Engineering

Background:

• Accurate interocclusal registration is fundamental for successful dental prosthesis fabrication.
• The selection of appropriate interocclusal registration materials directly impacts the precision of dental articulations.
• Material properties like dimensional stability and surface hardness are critical for clinical success.

Purpose of the Study:

• To evaluate and compare the dimensional stability and surface hardness of three common interocclusal registration materials.
• To determine the influence of material type and time on these critical properties.
• To provide evidence-based guidance for selecting optimal interocclusal registration materials.

Main Methods:

• Three interocclusal registration materials were tested: bite registration wax, polyvinyl siloxane bite registration paste, and Bisacryl-based bite registration paste.
• Dimensional stability and surface hardness were assessed at four distinct time intervals.
• Statistical analysis included one-way ANOVA, Tukey HSD post hoc tests, and nonparametric tests.

Main Results:

• Bisacryl-based bite registration material demonstrated significantly better dimensional stability and surface hardness compared to polyvinyl siloxane and bite registration wax.
• These superior properties were consistent across all four tested time intervals.
• Both the type of interocclusal registration material and the elapsed time influenced dimensional stability and surface hardness.

Conclusions:

• Bisacryl-based bite registration materials are recommended for their enhanced dimensional stability and surface hardness.
• Material selection should consider both inherent properties and the time-dependent changes affecting accuracy.
• Optimizing interocclusal registration material choice leads to improved outcomes in dental prosthesis fabrication.