The best dental insurance depends on your specific needs and budget. But a few top options for comprehensive coverage include: Delta Dental Premier - Large national network and 100% preventive coverage. Aetna Dental PPO - Covers orthodontics and offers discounts on cosmetic dentistry. MetLife PDP Plus - Waives deductible for preventive and diagnostic services. Guardian Managed DentalCare - No waiting periods and covers dental implants.