How does calculus on teeth appear when air dried?

When calculus on teeth is air dried, it typically appears dull and chalky. This is due to its mineral composition, primarily made up of calcium phosphate, and its rough surface texture, which reflects light differently compared to smooth surfaces. When fully formed, calculus has a hardened structure that lacks the polish or shine found on healthy enamel, contributing to its dull appearance when dehydrated.

The chalky look of calculus indicates that it is not remineralized dental structure; rather, it is a substance that needs to be removed for maintaining optimal oral health. The presence of calculus can often complicate oral hygiene efforts, making understanding its appearance critical for dental professionals. Other options like shiny and smooth or transparent and glossy would not apply to calculus; these descriptions are more characteristic of healthy enamel or well-polished surfaces. Stained and rough could describe some aspects of calculus, but the primary appearance after drying is best captured by the dull and chalky description.