Open Bite in Children: Causes and Next Steps

An open bite means upper and lower teeth do not meet in one area when the rest of the bite is closed. Front open bites are often associated with prolonged sucking habits, tongue posture, eruption patterns, or jaw growth; back open bites have other causes. Age, habit status, speech, chewing, growth, and severity guide next steps.

Front and back open bites are different

A front open bite leaves a vertical gap between the incisors. It may follow thumb or pacifier habits, tongue resting between teeth, altered eruption, airway-related posture, or a vertical skeletal growth pattern. A posterior open bite affects back teeth and can relate to tooth eruption, ankylosis, appliances, jaw position, or other factors. The term describes the contact pattern, not the cause. Treatment aimed only at closing the visible gap may be unstable if the driver remains.

What can change after a habit stops

In younger children, a habit-related open bite may improve as sucking stops and teeth continue to erupt, particularly before the permanent dentition is established. The degree of spontaneous improvement varies with age, duration and intensity of the habit, tongue posture, and jaw pattern. A family should not be promised that stopping a habit will correct every case, but early change can reduce a major force acting on the teeth. Supportive habit strategies are preferable to shame or punishment.

Speech and tongue questions

An open bite can coexist with a tongue-thrust swallowing pattern or certain speech sounds, but cause and effect are not always simple. A speech-language pathologist evaluates communication and oral-motor function; an orthodontist evaluates teeth and jaws. Myofunctional therapy may be considered in selected coordinated cases, but it is not a substitute for correcting a skeletal or dental relationship when that is necessary. Claims that one exercise program cures all open bites should be viewed cautiously.

Treatment possibilities

Depending on age and cause, care may include observation after habit cessation, a habit appliance, limited orthodontics, braces or aligners with vertical control, growth-oriented mechanics, extraction in selected comprehensive plans, or jaw surgery after growth for severe skeletal open bite. Retention and control of contributing posture or habits are important. The plan should define whether the goal is functional contact, incisor display, speech support, facial balance, or several outcomes.

When to contact the dental team sooner

Schedule an evaluation when your child cannot bite through food, speech is affected, a habit persists into the school years, the gap is increasing, or back teeth fail to meet. Snoring, breathing pauses, swallowing problems, or significant feeding concerns need appropriate medical evaluation as well.

Questions parents often ask

Can an open bite close after thumb sucking stops?

It often improves in younger children, but the amount depends on growth, eruption, tongue posture and skeletal pattern. Follow-up confirms the direction of change.

Does tongue thrust cause every open bite?

No. It may contribute or adapt to an existing gap. A full evaluation is needed before assigning one cause.

Can clear aligners fix an open bite?

They can be used in selected patients, but success depends on the source, severity, growth, attachments, elastics, wear and retention.

A practical next step

The honest answer to most of these questions is "it depends on your child," so let's look at yours. Call (201) 345-3637 whenever you're ready.

Sources

• American Academy of Pediatric Dentistry, Reference Manual of Pediatric Dentistry
• American Dental Association, MouthHealthy patient education
• American Association of Orthodontists, patient education