A dental insurance unit of Health Care Service Corp. is expanding the group of people who are eligible to come to it for dependent coverage.

Dearborn National, Chicago, says group dental plan insureds now can buy dependent coverage from it for any children under age 26.

The new federal Affordable Care Act – the legislative package that includes the Patient Protection and Affordable Care Act – will require health insurers to offer access to dependent health coverage to children under 26 starting in September.

The ACA dependent coverage mandate creates no mandate for dental coverage, but “Dearborn National is voluntarily extending dependent care,” the company says. “Rates will not be increased as a result of this enhanced benefit.”

Dearborn will be letting members opt in or out of the plan when the rules change, instead of imposing a late entrant penalty, and it will be extending sealants coverage for dependents to 16, from 14, the company says.

The company says it now will cover panoramic X-rays every 36 months. The typical standard has been 60 months.