Comparison of elastomeric impression materials used in fixed prosthodontics

Area of Science:

• Dental Materials Science
• Prosthodontics
• Impression Techniques

Background:

• Elastomeric impression materials are crucial for accurate dental prostheses.
• Evaluating impression material performance under clinical conditions is essential.
• Custom trays and adhesives can influence impression accuracy.

Purpose of the Study:

• To compare the clinical performance of five elastomeric impression materials.
• To evaluate the impact of custom trays and adhesives on impression accuracy.
• To determine the optimal impression material and technique for dental applications.

Main Methods:

• Five elastomeric materials (2 polysulfides, 2 silicones, 1 polyether) were tested.
• Simulated clinical conditions were used, with and without custom trays and adhesives.
• Statistical analysis was performed to compare material and technique effectiveness.

Main Results:

• Impression materials used with custom trays and adhesives showed superior results.
• Polyether impression material consistently outperformed others, with or without custom trays.
• Addition polymerization silicone ranked second, followed by lead-cure polysulfide and condensation polymerization silicone.

Conclusions:

• Custom trays and adhesives significantly enhance the accuracy of elastomeric impression materials.
• Polyether and addition polymerization silicone are recommended for optimal dental impression accuracy.
• Material selection and technique are critical factors for successful prosthodontic treatment.