What characteristic of a tooth may indicate the presence of anomalies in canal morphology?

Unusual contour of a tooth can be a significant indicator of anomalies in canal morphology. Teeth typically exhibit a consistent morphology, and deviations from the norm—such as atypical shapes, including bulges, bends, or unusual roots—can suggest complex internal structures. These anomalies may manifest in variations in the number of canals, canal shapes, or branching patterns that can complicate endodontic treatment. A tooth with an unusual contour may hint at such morphological complexities, encouraging clinicians to conduct more thorough investigations, such as radiographic examination, to assess the underlying canal system.

In contrast, root length, color, and surface texture are generally less informative regarding canal morphology. Root length may vary among teeth but does not inherently indicate internal canal structure. The color of a tooth can reflect its health status, carious involvement, or trauma but does not provide direct evidence of canal anatomy. Surface texture could suggest wear or other external factors but would not reliably point to inner canal irregularities.