Dimensional accuracy of 3 silicone dental impression materials

Area of Science:

• Dental Materials Science
• Prosthodontics
• Biomaterials Engineering

Background:

• Accurate dental impressions are crucial for optimal prosthesis fit.
• Dimensional stability of silicone impression materials is a key factor influencing prosthetic outcomes.
• Variations in mixing techniques can impact the physical properties of dental impression materials.

Purpose of the Study:

• To evaluate dimensional changes in three different silicone impression materials.
• To compare the accuracy of stone casts produced using single versus double mix techniques.
• To determine which proprietary silicone material exhibits superior dimensional stability.

Main Methods:

• Three silicone impression materials (Xantopren-H, President, Fulldent) were tested.
• Impression samples were fabricated using both single and double mix techniques (n=20 per material/technique).
• Dimensional accuracy was assessed by measuring stone casts derived from each impression.

Main Results:

• The single mix technique consistently yielded more accurate stone casts across all tested materials.
• Xantopren-H silicone impression material exhibited the most precise dimensional accuracy.
• Significant differences in dimensional stability were observed between the materials and mixing techniques.

Conclusions:

• The single mix technique is recommended for achieving greater accuracy with silicone impression materials.
• Xantopren-H is a preferred material for dental impressions requiring high dimensional stability.
• Material selection and mixing methodology significantly influence the accuracy of dental prostheses.