Dental insurance may vary from company to company. However most dental plans offer coverage for cleanings and basic services, such as non surgical extraction or a filling. Some dental plans cover major services such as coverage for crowns, root canal, oral surgery, etc. Dental plans may be offered as an HMO or a PPO. Some employers may offer dental coverage along with health insurance and vision coverage as a package. Most dental plans offer a yearly limit of coverage such as $1000, $1500 or $2500 and plans may or may not to cover orthodontics (braces).