Group Dental Insurance Buyer’s Guide

Dental is the benefit employees ask about second, right after the health plan, and the one where the gap between what a plan says and what it pays is widest. A plan can look generous on a benefit summary and still leave an employee paying most of a crown.

This guide covers how group dental is structured, the numbers that decide what a claim actually pays, the plan types worth comparing, and what to check before you renew.

The 100/80/50 Structure

Almost every group dental plan sorts procedures into three classes and pays a different share of each.

Preventive — exams, cleanings, x-rays — is typically paid at 100% and often exempt from the deductible. Carriers cover it fully because prevention is cheaper than treatment, not out of generosity.

Basic — fillings, extractions, root canals in most plans — is typically paid at 80% after the deductible.

Major — crowns, bridges, dentures, inlays — is typically paid at 50%.

The classes are not fixed by regulation. Carriers move procedures between basic and major, and a root canal classified as major instead of basic changes an employee’s share from 20% to 50% on one of the more expensive things they are likely to need. When comparing two plans, compare the procedure classification, not just the percentages.

The Annual Maximum Is the Real Limit

Dental works in the opposite direction from medical. A medical plan has an out-of-pocket maximum that caps what the employee pays. A dental plan has an annual maximum that caps what the plan pays. Past it, the employee pays everything.

That maximum is the single most important number on the plan, and it is the number that has aged worst across the industry. Annual maximums have moved very little over several decades while dental costs have not. A maximum set at a level that once covered substantial work now covers noticeably less. Employee premiums for group dental coverage can generally be paid pre-tax through a Section 125 cafeteria plan; IRS Publication 15-B covers the rules.

The practical consequence: for an employee who needs one crown, the plan works. For an employee who needs three, the plan runs out partway through the year, and the difference between a lower and a higher annual maximum matters far more than a few percentage points on the coinsurance.

Some plans now offer a maximum rollover, carrying unused benefit forward for employees who had a light year. It is a genuine feature rather than a gimmick, and worth asking about.

DPPO, DHMO and Indemnity

DPPO is what most employers buy. Employees can see any dentist, with better pricing in network because the carrier has negotiated fee schedules. Out of network the plan still pays, but against an allowed amount rather than the dentist’s actual charge — which is where balance billing comes from.

DHMO costs less, sometimes substantially. Employees choose a primary dental office from a limited panel, and care outside it generally is not covered at all. There is often no annual maximum, which sounds better than it is: the trade is unrestricted access to a narrow network rather than limited access to a wide one. DHMO works where the panel is genuinely convenient for your workforce and fails where it is not.

Indemnity plans pay a share of any dentist’s charge with no network at all. They have largely disappeared from the group market because the pricing discipline a network provides is what keeps premiums down.

Offering both a DPPO and a DHMO is a reasonable way to give a price-sensitive employee a real choice, provided the DHMO panel actually covers where people live.

Waiting Periods and Missing Tooth Clauses

Two provisions cause most of the surprise in this line.

Waiting periods delay eligibility for basic and major services — often six months for basic and twelve for major — so a new employee can enroll, pay premium, and find that the crown they need is not covered yet. Waiting periods can frequently be waived when a group moves from prior coverage, and that is worth negotiating rather than accepting as standard. Tying benefits eligibility to employee onboarding keeps waiting periods and effective dates from slipping.

A missing tooth clause excludes replacement of teeth that were already missing before coverage began. It is the dental equivalent of a pre-existing condition limitation, and employees never expect it.

Orthodontia Is a Separate Decision

Orthodontic coverage sits outside the normal structure. It typically has its own lifetime maximum rather than an annual one, pays at its own coinsurance level, and is often restricted to dependent children under a stated age.

It is also the benefit most likely to be the reason an employee chose to enroll at all. If you have a workforce with school-age children, adult orthodontia coverage or its absence will be noticed far more than a change in the basic coinsurance.

What to Check at Renewal

The annual maximum against current costs. If it has not moved in years, the plan has been quietly cut.
Procedure classification. Ask specifically where root canals and periodontal work sit. A move from basic to major is a real benefit reduction that never appears as a rate increase.
Network match. Run the dentist list against where employees actually live, not the metro area on the carrier’s map.
Utilisation. Ask what share of enrolled employees used the preventive benefit. Low use on an employer-paid plan usually means people do not know they have it.

Questions We Get

What does 100/80/50 mean?

The share the plan pays for each class of service: preventive care at 100%, basic services such as fillings at 80%, and major work such as crowns and bridges at 50%. The percentages matter less than which class a procedure falls into, because carriers classify differently and a root canal treated as major rather than basic moves the employee’s share from 20% to 50%.

What is the annual maximum and why does it matter so much?

It is the most the plan will pay for one person in a year. Dental works the opposite way from medical: a medical plan caps what the employee pays, a dental plan caps what the plan pays, and past the maximum the employee pays everything. It is the number that has kept up least with actual dental costs, so it usually matters more than the coinsurance percentages.

What is the difference between a DPPO and a DHMO?

A DPPO lets employees see any dentist, with better pricing in network and balance-billing exposure out of network. A DHMO costs less and restricts care to a limited panel, with little or no coverage outside it, often with no annual maximum. DHMO works well where the panel is genuinely convenient for your workforce and poorly where it is not.

Why was a new employee’s crown not covered?

Almost certainly a waiting period — commonly six months for basic services and twelve for major. The employee is enrolled and paying premium but not yet eligible for that class of service. Waiting periods can often be waived when a group moves from prior coverage, which is worth negotiating rather than accepting as standard.

What is a missing tooth clause?

An exclusion for replacing teeth that were already missing before coverage began. It is the dental equivalent of a pre-existing condition limitation, it appears in many group contracts, and employees almost never expect it. Check whether yours has one before an employee finds out the hard way.

Is orthodontia included?

Not automatically, and when it is included it works differently — usually its own lifetime maximum rather than an annual one, its own coinsurance level, and often limited to dependent children under a stated age. For a workforce with school-age children it is frequently the reason someone enrolled at all.

Should dental be employer-paid or voluntary?

Employer-paid gets full enrollment and avoids participation minimums. Voluntary shifts cost to employees, usually pre-tax through a Section 125 plan, but carriers set a participation minimum and a plan that falls below it can be withdrawn at renewal. Many employers cover the cheaper of dental and vision outright and offer the other voluntarily.

Why did an employee get a bill after the plan paid?

Usually out-of-network balance billing. Out of network the plan pays against an allowed amount rather than the dentist’s actual charge, and the dentist bills the employee for the difference. The other common cause is hitting the annual maximum partway through a course of treatment.

What is maximum rollover?

A feature on some plans that carries part of an unused annual maximum forward into the following year for employees who had a light claims year. It rewards preventive use and gives employees more room when they eventually need major work. It is a genuine feature rather than a marketing term, and worth asking whether your carrier offers it.

How often should we review the plan?

Look at the annual maximum, the procedure classification and the network match every year at renewal, even when the rate is flat. Dental plans degrade quietly: the benefit stays the same on paper while costs rise around it, so a plan nobody has touched in five years has effectively been reduced without anyone deciding to reduce it.

General information for Michigan employers, not legal or tax advice. Plan-specific questions belong with your counsel or accountant, and we will bring them in.

Group Dental Insurance: A Buyer’s Guide for Michigan Employers