Impression compounds are thermoplastic materials used in dentistry for taking accurate primary impressions, border molding, and functional impressions for complete dentures. These materials soften when heated and harden upon cooling, allowing for precise adaptation to oral structures. These are available in sheets, sticks, or cakes, impression compounds are ideal for edentulous patients, providing a stable and detailed impression of the soft tissues. Their ability to be reheated and reshaped makes them useful for modifications and adjustments during impression-taking. With good dimensional stability and a firm set, they help capture anatomical details essential for proper prosthetic fit. While newer elastomeric materials have become more common, impression compounds remain a trusted choice for cases requiring a rigid, adaptable impression material. Their ease of use, reusability, and ability to record functional movements make them an important tool in prosthodontics and denture fabrication.
