What is a key feature of a custom provisional crown?

A key feature of a custom provisional crown is that it is typically made from acrylic or composite materials. These materials are preferred because they allow for customization in terms of fit, function, and aesthetics. When creating a custom provisional crown, the dental assistant or dental professional can shape the crown to match the contours of the prepared tooth and ensure it aligns well with the patient's occlusion, which is essential for both comfort and function.

Acrylic and composite resins also permit easier adjustments and are more aesthetically pleasing compared to metal materials, making them suitable for both anterior and posterior teeth. This versatility allows for temporary solutions that can be quite lifelike in appearance.

In contrast, other materials like metal are not suitable for custom provisional crowns due to their lack of aesthetic qualities, and using materials that require no impressions or limiting the provisionals only to posterior teeth does not align with the purpose and design of custom provisional crowns.