Final answer:
The question requests information on the interproximal heights of contour or crests of convexity in dental anatomy, specifically in relation to arches and premolars, stating their position and role in oral health.
Step-by-step explanation:
The question pertains to the interproximal heights of contour or crests of convexity, which are anatomical features found in the teeth. These terms describe the most bulbous part of the tooth that touches the adjacent tooth in the arch, playing a significant role in maintaining proper spacing and preventing food impaction. Posterior to the cuspids, which include canines, are the eight premolars also known as bicuspids. These teeth have a flatter shape with two cusps that are essential for mashing food. The pattern that the interproximal height of contour follows in arches is not explicitly stated in the question, but generally, it occurs at the contact area where adjacent teeth meet, aiding in the protection of the periodontium and in food deflection.