Dental insurance is a type of insurance that provides coverage for preventive and restorative dental care services. There are several reasons why someone may choose to buy dental insurance:

1. Cost savings: Dental insurance can help you save money on routine dental care expenses, such as dental exams, cleanings, and X-rays, as well as more extensive dental procedures, such as fillings, extractions, and root canals.

2. Protection against unexpected expenses: Dental insurance can help protect you against unexpected dental expenses, such as the need for a dental crown or bridge due to a dental injury.

3. Improved access to dental care: Dental insurance can make it easier for you to access routine dental care services by covering the cost of dental exams and providing discounts on dental procedures.

4. Better oral health: Regular dental exams can help detect dental problems early, which can improve the chances of successful treatment and better oral health.

5. Convenience: Many dental insurance plans offer access to a network of dental care providers, making it easier to find a provider who accepts your insurance and schedule appointments.

It's important to note that dental insurance typically does not cover major medical issues related to the mouth, such as oral cancer. Additionally, not everyone may benefit from dental insurance, particularly if you have low out-of-pocket costs for routine dental care services or if you do not have dental issues that require extensive treatment.