Early and Late Eruption in Arlington, VA: Orthodontics Timing for Kids

The first permanent teeth set the pattern for the rest of the bite. The first permanent molars, the large flat teeth behind the baby ones, usually arrive at about six years old, and the lower front teeth are usually close behind. Those first molars appear behind the last baby tooth without anything falling out first, so parents often miss them. This page covers when to expect the first permanent molars and front teeth, what early or late eruption can mean, what an orthodontist assesses in a child, how the school year and Virginia's school-entry requirement fit in, and where the cost lands. We are a free independent matching service, not a practice: licensed Arlington orthodontists examine, quote and treat.

When the first permanent teeth arrive

Children lose their front baby teeth and grow their first permanent teeth around the same age, and the order matters more than the exact date. The first permanent molars are usually the first of the adult teeth to come through, at about six years old. The lower front teeth, the central incisors, are usually close behind or just ahead of them.

Those first molars are the ones families most often miss, because they come through behind the last baby tooth without anything being lost first. They also set the spacing for the rest of the bite, which is one reason an early orthodontic evaluation is often suggested around age seven, once they and the front teeth are in place.

Children vary widely. A difference of several months between one side and the other is common and usually nothing more than that child's own timing. A tooth that is well behind its opposite number, or that arrives out of sequence, is the usual reason to look more closely.

Early eruption and late eruption: what each can mean

Late by a little. Very common, and often nothing more than the child's timing. It is usually watched rather than treated.
Late and asymmetric. One side well ahead of the other is worth imaging, because a permanent tooth can be blocked by crowding, by an extra tooth, or by the gum and bone above it.
A baby tooth that will not fall out. Sometimes the permanent tooth comes through beside or behind it instead, which is a reason to assess rather than wait.
A missing permanent tooth. Some children simply never form one, and only an X-ray shows it. That changes the plan for the whole arch.
Early eruption. A tooth that arrives well ahead of the usual age is usually a variation too, but it can change how the bite settles over the following years.

The pattern behind all of these is the same. Teeth arrive in an order, and a tooth that breaks that order is the signal to look with records rather than to guess.

What an orthodontist assesses in a child

Records for a child look much like records for an adult, with one addition. Photographs, X-rays and a scan or impression establish where the teeth are, and the orthodontist then adds an estimate of how much growth is left, because that decides whether treatment starts now or later.

Whether every permanent tooth is present, and whether any is blocked.
How much growth remains, and how the jaw relationship is developing.
Whether the first permanent molars have come into a workable position, since they act as the cornerstone of the bite.
Whether the bite has already begun to shift because of the eruption pattern.
What the space looks like for the teeth still to arrive.

The usual recommendation at that appointment is one of three answers: start now, review again in six or twelve months, or plan a first phase now with a second phase later. A parent should leave knowing which one applies to their child and why.

When to book a first evaluation, and what points to it

Most guidance points to a first orthodontic evaluation around age seven, when the first permanent molars and front teeth have come through and a growing jaw can still be guided. That appointment is an assessment rather than a commitment, and many children leave it on a review list.

Some findings make the timing easier to call, and they are worth booking sooner for rather than at the next routine dental visit.

Crowding that is blocking a permanent tooth from arriving.
A crossbite, or an underbite that is developing.
A habit that is moving the front teeth, such as a thumb habit or a tongue that pushes forward.
A baby tooth lost very early or very late compared with the other side.

A referral from the general dentist is a common way in. Bring that note and any X-rays you already have, so the records appointment does not duplicate work that has been done.

Why the school year matters here

Arlington Public Schools opened the 2026-27 year with 27,173 students. A district that size sets the rhythm of appointments across the county: orthodontic evaluations cluster in the late elementary and middle-school years, and after-school slots fill first.

Starting treatment over a summer puts the early adjustment visits outside the school term. It also lines up with the state's school-entry requirement, because under Code of Virginia section 22.1-270 no pupil is admitted for the first time to a public kindergarten or elementary school in a division without a report of a physical examination, and the state's school entrance health form carries a dental health section for a provider to complete.

None of that is a clinical reason to start in one season rather than another. It is a scheduling question, and the practical things to ask are how far ahead appointments are booked, whether the practice runs early-morning or Saturday hours, and what happens if a child misses a visit during term time.

What parents pay, and how children are covered

The published appliance bands for children are the same as for adults.

Appliance	Published range	Insurance share where covered
Metal (standard) braces	$3,000 - $7,500	$1,500 - $3,750
Ceramic braces	$2,000 - $8,500	$1,000 - $4,750
Clear aligners (Invisalign)	$3,000 - $7,000	$1,500 - $3,500
Lingual braces	$5,000 - $13,000	$3,500 - $9,250
Comprehensive orthodontic treatment	$3,000 to more than $10,000	A second published source puts the overall range at $3,000 to more than $12,000
Braces paid privately	up to about $7,000	Published ceiling for braces without insurance

Two-phase treatment is where quotes diverge most. A first phase that starts early and a second phase after the adult teeth have arrived is a template that some cases need and others do not, so two practices can honestly quote very different totals for the same child. Ask for the fee in writing, phase by phase, and ask whether retainers are inside the total.

Children on Virginia Medicaid are covered differently. The Cardinal Care Smiles program provides comprehensive dental services to members under age 21 and is administered by DentaQuest. Whether orthodontics is included turns on medical necessity, so it is worth having that checked before treatment is booked rather than assumed either way.

No published source carries an average orthodontic fee for Arlington specifically, and this page does not state one. What moves the number inside those bands is the case rather than the town: a short round on a mild problem and a two-year plan with an extraction or a surgical step are not the same purchase. Ask each practice for a written fee schedule that lists what the total covers, records, appliances, every adjustment visit, removal, and retainers. If a retainer is not inside the total, ask for its price separately, because our sources publish no retainer price at all.

Frequently asked questions

When do the first permanent molars come in?

Usually at about six years old, which is why they are often called the six-year molars. They arrive behind the last baby tooth without anything falling out first, so parents often miss them. An early orthodontic evaluation is often suggested around age seven, once they and the front teeth are through.

Is it normal for a child's teeth to come in late?

Usually yes. Children vary widely, and a delay of a few months on one side is common. It is worth imaging a tooth that is well behind its opposite number, a baby tooth that will not fall out, or a tooth that arrives out of sequence, because a permanent tooth can be blocked by crowding, an extra tooth or bone.

What if a permanent tooth never comes in?

Some children never form a particular permanent tooth, and only an X-ray shows it. That changes the plan for the whole arch, because the space has to be managed either by closing it or by holding it for an implant later. The orthodontist and the general dentist plan that together.

How much do braces cost for a child in Arlington?

Published ranges put metal braces at $3,000 to $7,500, with an insurance share of $1,500 to $3,750 where a plan covers orthodontics. Ceramic braces run $2,000 to $8,500 and clear aligners $3,000 to $7,000, with teen aligner cases in that band. Comprehensive treatment runs $3,000 to more than $10,000, with a second source at $3,000 to more than $12,000.

Does Virginia Medicaid cover braces for children?

Virginia's Cardinal Care Smiles program provides comprehensive dental services to children under age 21 and is administered by DentaQuest. Whether orthodontics is included turns on medical necessity, so have the practice check the plan before treatment is booked rather than assuming either way.

Does Virginia require a dental exam before school?

Virginia requires a report of a physical examination before a child is first admitted to public kindergarten or elementary school in a division, and the state school entrance health form carries a dental health section for a provider to complete, under Code of Virginia section 22.1-270. It is a general health requirement, not a braces requirement.