Final answer:
The treatment of choice for internal resorption detected in a vital, asymptomatic tooth is to remove the pulp and proceed with endodontic treatment (root canal), to prevent further decay that could lead to an abscess or spread of the infection.
Step-by-step explanation:
When an internal resorption is detected in a vital, asymptomatic tooth, the treatment of choice is to 'D. remove the pulp and proceed with endodontic treatment' at this time. This approach is typically taken when radiographs, or X-rays, reveal that tooth decay has reached the innermost pulp where nerves and blood vessels are located, despite the lack of symptoms. Ignoring such a situation may allow the decay to progress, leading to the development of painful abscesses and potentially spreading the infection to other areas.
Cavities, or dental caries, when untreated and allowed to reach the soft pulp inside the tooth can necessitate a procedure such as a 'root canal,' where the infected pulp is removed to prevent spread of the infection. As part of routine dental care, if caries develop, early intervention can prevent complications, such as those requiring aggressive treatments like extraction or more extensive restorative procedures.