All of the following are typically covered under dental insurance EXCEPT

• A. Treatment which began before the eligibility date
• B. Fluoride
• C. Teeth cleanings
• D. X ray

Answer: (A)

Many dental insurance plans cover preventive and diagnostic services, such as teeth cleanings, X-rays, and fluoride treatments, because these help maintain oral health. These services are typically covered and may be limited by frequency, but they’re designed to be accessible under standard plans. The key rule is that benefits usually apply to services started after the policy becomes effective. If a treatment has already begun before eligibility, the plan typically won’t provide benefits for that ongoing care. Therefore, the option describing treatment that began before eligibility is not typically covered, while fluoride, teeth cleanings, and X-rays are standardly covered under most dental plans.