Impression materials for recording the denture bearing mucosa

Area of Science:

• Dentistry
• Prosthodontics
• Dental Materials Science

Background:

• Accurate recording of the denture bearing mucosa is crucial for successful denture fabrication.
• Tissue movement and material properties significantly impact impression accuracy in edentulous patients.

Purpose of the Study:

• To provide guidelines for selecting and using impression materials for edentulous ridges.
• To highlight the importance of material characteristics and clinical techniques in achieving accurate impressions.

Main Methods:

• Review of properties of various impression materials, including viscosity, working time, and contact angle.
• Discussion of optimal clinical techniques for impression making, focusing on minimal tissue displacement.
• Consideration of material-tissue interactions and flow characteristics.

Main Results:

• No single impression material is ideal for all edentulous impressions.
• Low viscosity, favorable flow characteristics, and appropriate working time are desirable material properties.
• Minimal pressure during impression seating is recommended to reduce tissue distortion.

Conclusions:

• Clinicians must understand and adapt their techniques to the specific properties of available impression materials.
• Future dental materials should be developed with improved performance characteristics for edentulous impressions.
• Optimizing impression techniques is essential for fabricating well-fitting dentures.