Which dental tray is primarily used to take a maxillary impression?

The upper impression tray is specifically designed to capture the contours and details of the maxillary arch, which is the upper jaw. This tray is larger and has a shape that accommodates the unique anatomical features of the maxilla, including the palate and the upper gingival tissue. Its design ensures accurate impressions are taken, which are critical for creating dental appliances, dentures, or crowns.

In contrast, other trays such as the lower impression tray are meant for the mandibular arch and would not provide the necessary fit or coverage for the upper jaw. Quadrant impression trays are intended for a smaller segment of either arch, limiting their effectiveness for full impressions. Anterior impression trays focus on the front teeth and may not capture the entire maxillary arch, which is essential for comprehensive dental work. Therefore, for an accurate maxillary impression, the appropriate choice is the upper impression tray.