Final answer:
Dental stains are primarily removed to prevent cavities. Dental cleanings assist in detecting and addressing early decay, and the use of fluoride treatments during these cleanings strengthens enamel, reducing the likelihood of cavities and promoting overall dental health.
Step-by-step explanation:
The primary reason for removing dental stains is the prevention of cavities (D). By eliminating dental stains, various benefits can be achieved. Regular dental cleanings detect decay at early stages, allowing for the removal of tartar and stains, which can house bacteria that cause tooth decay. Furthermore, fluoride treatments during dental visits strengthen teeth by incorporating into the enamel and making it more resistant to acid erosion caused by bacteria. Lastly, good oral hygiene practices, such as regular brushing and flossing with fluoride-containing toothpaste, control bacterial plaque and provide ongoing protection against cavities.
While aesthetics (A) might also be a concern, improving perception of taste (B) is not directly related to the removal of dental stains. Increased enamel strength (C) is achieved through the use of fluoride treatments and is not a direct result of stain removal, although fluoride can help prevent future stains by strengthening enamel against decay.