What is an overjet? Causes, correction treatment, and consequences to health

Dani Dinkel

Written by Dani Dinkel RDH

An overjet can cause many people to be embarrassed by their smile. It causes the front teeth to protrude outward and makes them very noticeable when smiling or talking. Fortunately, there are many ways to correct an overjet with great success. First, you must be able to identify and overjet, its causes, and its symptoms.

What is overjet?

Misaligned teeth

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An overjet occurs when the maxillary anterior teeth protrude outward. There is a large horizontal space between the maxillary anterior teeth and the mandibular anterior teeth. This condition is sometimes referred to as “buck teeth.”

Overjet vs. overbite

It’s easy to get these two terms confused. As we just described, an overjet is more of a horizontal presentation. The maxillary anterior teeth stick out further than the mandibular anterior teeth. While everyone should have a slight overbite so that the teeth do not occlude end-to-end, it should not be noticeable.

In an overbite, there is a deep vertical overlap. The maxillary anterior teeth overlap the mandibular anterior teeth. Like the overjet, a small overbite is good, but the two arches should only overlap by about 1-2 mm or one-third of the tooth structure.

What causes overjet?

An overjet can be caused by genetics, but it is more often caused by early childhood habits. This includes:

  • thumb-sucking,
  • tongue-thrusting, or
  • prolonged use of a pacifier.

These activities all put undue pressure on the teeth and cause them to splay outward over time.

Is an overjet bad for you?

An excessive overjet can negatively impact your oral and overall health. Some of the negative consequences of an overjet include:

  • toothaches,
  • headaches,
  • jaw pain,
  • difficulty chewing,
  • difficulty swallowing,
  • pain with eating and swallowing,
  • speech impediment (lisps or slurs).

How to fix an overjet?

There are several ways to correct an overjet. You will need to consult with your general dentist or orthodontist to find out which method(s) you are a candidate for.

Braces

Metal braces

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Braces are a common way to correct any kind of malalignment. Traditional braces consist of metal brackets and wires that move the teeth into the correct position over time. You’ll need to see an orthodontist if you want to use braces to correct your overjet. Once treatment begins, you’ll have periodic visits to the office so that your orthodontist can tighten the wires.

The length of time needed for braces to correct the overjet will depend on the severity of the overjet. Your orthodontist will need to make models of your teeth, take measurements, and get several radiographs. Most individuals wear braces for approximately 24 months.

Dental bonding

Full upper arch

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Dental bonding is a procedure where a dentist places composite resin on your teeth to reshape them. This is the same material that is used to restore teeth when they have decay. While bonding can be a great option in some cases, it will not help with the appearance of a severe overjet. Also, bonding can wear down overtime, so it is not a great long-term solution and does not actually correct the alignment of the teeth.

Veneers

Veneers placement

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Veneers are similar to dental bonding in that they also transform the shape of the teeth. However, they are a more permanent procedure, even if they do not correct the alignment. A veneer is fabricated at a dental lab and then permanently cemented to the front of the tooth. This will make a crooked tooth appear straight and may make an overjet less noticeable. As with dental bonding, this is not a great option for severe overjets.

Crowns

Zirconia crown

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Crowns are the same as veneers, but instead of only covering the front side of your tooth, they cover the entire tooth (or crown). A crown has less likelihood of coming off or breaking, but does require the dentist to remove more tooth structure, thereby weakening the tooth. Again, a crown is not a good option for those with severe overjets.

Teeth removal

Simple tooth extraction

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Removal of teeth is only recommended in rare cases. Prior to orthodontic treatment, some orthodontists may recommend removing one or more premolars to make room for the other teeth to shift into place. This is a somewhat older method and is not common anymore.

FAQ

Does overjet get worse with age?

Yes, the severity of an overjet will get worse with age, which is why it is important to take measures to correct it as soon as possible.

Which is corrected first overjet or overbite?

While treatment can begin correcting both forms of malocclusion at one time, it is usually the overbite that takes priority over the overjet.

How long does it take to fix an overjet?

The length of time required to fix an overjet will vary case by case and will depend on which method is used. However, most overjets are corrected in about 24 months.

Can I correct the overjet at home?

Once you have an overjet, it cannot be corrected at home. It will need orthodontic intervention.

References

  1. Evaluating the Correlation between Overjet and Skeletal Parameters Using DVT - Hindawi
  2. Effect of Incisor Angulation on Overjet and Overbite in Class II Camouflage Treatment: A Typodont Study - EHASO