A dental impression tray comprises a trough for receiving dental impression
material and at least one retainer on at least a portion of an inner
surface of the trough. The retainer comprises a plurality of anchoring
elements, each of which comprises a first end, a second end, and an arc
between the first and second ends. The first and second ends of the
anchoring elements are connected to the inner surface of the trough, and
the arcs project from the inner surface of the trough. The loop material
of a hook and loop mechanical fastener is a particularly useful retainer.
