Abstract: A dental impression tray or bite registration tray or the like is provided with a level indicator to indicate patient bite angle. When the impression tray or the like is placed into the mouth of a patient, the level indicator provides an accurate indication of patient bits angle, particularly with respect to deviations from a horizontal plane. This bite angle information can be used subsequently in dental laboratory procedures to accommodate the specific bite angle in the formation of a dental prosthesis or the like, thereby achieving a more accurate prosthesis fit.