Final answer:
The impression tray that covers the anterior portion of the dental arch is the partial arch tray.
Step-by-step explanation:
The type of impression tray that covers the anterior portion of the dental arch is the partial arch tray. Impression trays are dental instruments used to take an accurate impression of the teeth and oral tissue. A full arch tray covers the entire dental arch, a triple tray captures both arches and their occlusion during a single impression, and a quadrant tray captures only one quadrant of the mouth. Therefore, when needing to make an impression of just the anterior part of the arch, a partial arch tray is the appropriate choice.