In prosthetic dentistry, which material is commonly used for final impressions due to its excellent detail reproduction?

Polyether is often selected for final impressions in prosthetic dentistry because of its exceptional ability to capture fine details and provide high dimensional stability. This material has unique characteristics such as low tear strength and excellent wettability, which allow it to accurately replicate the contours of the oral cavity and surrounding tissues. Its precision is crucial for manufacturing prosthetic devices, such as crowns, bridges, and dentures, ensuring a better fit and function.

In comparison, reversible hydrocolloid is more suitable for making preliminary impressions rather than final ones, as it may not provide the same level of detail and stability. Alginate is frequently used for preliminary impressions too, as it is easy to manipulate and economical, but it does not offer the dimensional stability required for final impressions. Gypsum is primarily used for creating models and casts rather than for making impressions, making it unsuitable for this specific purpose.