Orthodontic services include any dental procedure aimed at diagnosing, preventing, or correcting misaligned teeth and jaws. This covers a wide range, from the initial X-rays and impressions taken before treatment begins, through the active phase of moving teeth with braces or aligners, to the retention phase that keeps teeth in place afterward. Some services are straightforward, like fitting a retainer. Others are complex, like coordinating braces with jaw surgery. Understanding the full scope helps when you’re reviewing an insurance plan, preparing for a consultation, or trying to figure out what your treatment will actually involve.
Diagnostic and Planning Services
Before any appliance goes on your teeth, orthodontic care starts with a diagnostic workup. This typically includes several types of imaging. A panoramic X-ray (sometimes called an orthopantomogram) gives a wide view of all your teeth, roots, and jawbone in a single image. A lateral cephalogram is a side-view X-ray used to measure the relationships between your skull, jaw, teeth, and soft tissue profile. In more complex cases, a cone-beam CT scan produces a detailed 3D image that helps locate impacted teeth, assess root damage, or plan surgical cases with greater precision than standard X-rays allow.
Beyond imaging, a diagnostic workup usually includes photographs of your face and teeth, physical impressions or digital scans of your bite, and a clinical exam. All of this feeds into a treatment plan that maps out what needs to move, how far, and which appliances will do the job. These records aren’t just a formality. They’re the baseline your orthodontist uses to track progress and adjust the plan over the course of treatment.
Fixed Appliances: Braces and Beyond
Fixed orthodontic appliances are anything bonded or cemented to your teeth that you can’t remove yourself. The most familiar example is traditional braces: brackets attached to each tooth, connected by an archwire, and held in place with small rubber bands or metal ties. Brackets come in metal (the classic silver look) or ceramic (clear or tooth-colored, for people who want something less visible). Rubber bands, called elastics, are used in nearly every braces case to help guide the bite into the right position.
Fixed appliances go beyond standard braces, though. Lingual braces are brackets placed on the back surface of your teeth, making them invisible from the front. Palatal expanders are fixed devices cemented to the upper molars that gradually widen a narrow upper jaw. Herbst appliances and similar functional devices are fixed to the teeth and work to reposition the lower jaw forward in cases of significant overbite. Space maintainers hold gaps open after a baby tooth is lost early, preventing neighboring teeth from drifting into the space before the permanent tooth comes in.
Removable Appliances and Clear Aligners
Removable orthodontic appliances are devices you can take out for eating, brushing, or specific activities. Clear aligners are the most well-known example. These are a series of custom-made, transparent plastic trays that gradually shift teeth into new positions. Each set is worn for a prescribed period before moving to the next in the sequence.
Retainers also fall into this category, though they’re used after active treatment rather than during it. The Hawley retainer is the most popular removable type, made of an acrylic base that sits against the roof of your mouth (or behind your lower teeth) with a wire that wraps around the front. Vacuum-formed retainers are a thinner, clear plastic alternative that fits snugly over the teeth. They cost less to make and are nearly invisible, though they may not be as durable. There are also specialized modifications: wrap-around retainers extend the wire further back to the premolars, reinforced retainers add a metal mesh for strength, and translucent labial bow retainers replace the metal wire with a clear resin for a more aesthetic look.
Early Intervention for Children
Interceptive orthodontics, often called Phase 1 treatment, is a category of services specifically for young children, typically between ages 6 and 9. At this stage, kids have a mix of baby and permanent teeth, and certain problems are easier to address before the jaw finishes growing.
Common Phase 1 services include palatal expanders to widen a narrow upper jaw, headgear to influence jaw growth, space maintainers to preserve room for incoming permanent teeth, limited braces on select teeth, and functional appliances that guide jaw development. The goal isn’t to fully straighten every tooth. It’s to correct structural issues, like a crossbite or severe crowding, that would become harder and more invasive to fix later. Phase 1 treatment typically lasts 9 to 12 months and is often followed by a monitoring period before a second phase of comprehensive treatment in the teen years.
Specialized and Surgical Services
Some orthodontic cases require tools and procedures that go beyond braces and aligners. Temporary anchorage devices (TADs) are small screws placed into the jawbone to serve as fixed anchor points. They allow the orthodontist to move specific teeth without pushing other teeth out of position, something that was historically difficult to achieve. TADs are particularly useful for intruding teeth that have over-erupted, pulling impacted teeth into the arch, closing gaps left by missing molars, and correcting a tilted bite plane. They’ve expanded what orthodontic treatment can accomplish without surgery.
When jaw misalignment is too severe to correct with tooth movement alone, orthodontic treatment may be coordinated with orthognathic (jaw) surgery. In these cases, the orthodontist’s role spans the entire process: presurgical braces to align the teeth within each jaw, detailed surgical planning alongside the oral surgeon, and postsurgical orthodontics to fine-tune the bite after the bones heal. Surgical orthodontics can address functional problems like difficulty chewing or breathing, along with significant facial asymmetry. The orthodontic component of this process can add months to the overall treatment timeline on both ends of the surgery.
Retention: Keeping Results in Place
Retention is a formal phase of orthodontic care, not just an afterthought. Once braces or aligners come off, teeth have a natural tendency to drift back toward their original positions. Retainers counteract this. The retention phase traditionally lasts 12 to 24 months with regular checkups, but research has shown that teeth can relapse even after one to two years without a retainer. Because of this, many orthodontists now recommend wearing retainers indefinitely, at least at night.
Retention services include the fitting and adjustment of removable retainers (Hawley or clear types) as well as bonded retainers, which are thin wires permanently cemented to the back of the front teeth. Periodic monitoring visits during retention allow the orthodontist to check for shifting, assess retainer fit, and make adjustments. If a bonded retainer breaks or a removable one no longer fits, replacement is also considered part of ongoing orthodontic care.
Treatment Duration and What to Expect
Active orthodontic treatment, the phase where teeth are being moved, typically lasts 12 to 18 months for most cases. More complex situations involving jaw discrepancies, surgical coordination, or severe crowding can extend well beyond that. Phase 1 treatment for children runs about 9 to 12 months but may be followed by a second phase years later. Adding the retention phase, the full arc of orthodontic care from first appointment to the end of active retainer wear often spans three years or more.
What Insurance Considers Orthodontic Services
From an insurance perspective, orthodontic services are often separated into two categories: medically necessary and cosmetic. Most dental plans that include orthodontic coverage have a lifetime maximum benefit, commonly applied to braces or aligners for dependents under 18 or 19. Coverage for adults varies widely.
For state Medicaid programs, medical necessity is often determined by a clinical scoring system. California, for example, uses the Handicapping Labio-Lingual Deviation (HLD) Index. Certain conditions qualify automatically: a deep overbite where the lower teeth are damaging the tissue of the palate, a crossbite causing gum recession and tissue loss, an overjet (horizontal protrusion) greater than 9 millimeters with lips that can’t close at rest, or a reverse bite greater than 3.5 millimeters that interferes with chewing and speech. If a case doesn’t meet these thresholds or score 26 or above on the index, children may still qualify through supplemental screening exceptions if medical necessity can be documented.
Private insurance plans typically don’t use the HLD Index but do distinguish between orthodontic treatment that corrects a functional problem and treatment that’s primarily cosmetic. Diagnostic services, active treatment, and retention are all generally grouped under the orthodontic benefit, meaning they draw from the same pool of coverage rather than being billed separately under preventive or basic dental categories.