Which impression tray would be used to take an impression of a quadrant?

A quadrant impression tray is specifically designed to take impressions of a single quadrant of the dental arch, which consists of one-fourth of the upper or lower jaw. This tray allows for precise capture of the teeth and surrounding soft tissue in that specific area. The unique shape and size of the quadrant tray ensure that it fits comfortably over the targeted section of the mouth, providing an accurate impression needed for various dental procedures, such as creating crowns or bridges.

The other tray options are more generalized; an upper impression tray is meant for the entire upper arch and a lower impression tray is used for the entire lower arch, making them unsuitable for capturing just a portion of these areas. The anterior impression tray is designed for the front teeth (anterior region) and would not accurately capture the entire quadrant, which includes both anterior and posterior teeth in that segment.