Overbite: Definition & Treatment

An overbite is a common dental problem that impacts both children and adults.

It happens when the lower part of your face is too small or when the upper teeth vertically overlap your lower teeth more than they should.

While overbites can impact oral function and lead to aesthetic issues, there are treatments available that can correct the overbite and enhance your confidence.

What Is An Overbite?

An overbite is a vertical overlap between the upper front teeth and lower teeth.

While some overbites are minor, they can also be severe.

If the vertical overlap is between 4mm and 6mm, it's classed as a normal overbite, but excessive overbites exceed 6mm.

Some people may also experience severe overbite issues, where the upper jaw covers their lower teeth completely.

In some cases, this can also penetrate your lower gums.

What Are the Symptoms Of An Overbite?

Both minor and severe overbites can cause a variety of symptoms, with the most common including:

The Causes Of Overbites

A range of factors, including genetics, behavioural traits, and abnormalities in the jaw, can cause overbites:

• Genetics: Overbites can often be hereditary. A child is more likely to develop one if a parent or close family member has an overbite.

• Bruxism: Bruxism - also known as teeth grinding - can worsen your overbite.

• Habits: Children who engage in thumb sucking have a higher risk of developing an overbite. Other causes include prolonged usage of dummies and extended bottle feeding.

• Tongue Thrusting: People who push their tongues forward when swallowing or resting can exert pressure on the teeth, resulting in them shifting.

• Misalignments & Gaps: Individuals with misalignments or gaps in the upper and lower teeth are more at risk of overbites, as they disrupt the natural bite.

• Jaw Abnormalities: Abnormal jaw size or shape can compromise teeth alignment, resulting in bite issues.

How Do Dentists Diagnose Overbites?

An overbite is usually diagnosed by a dentist, who will refer you to an orthodontist if further treatment is required.

When you visit a dentist for bite issues or a routine check-up, they'll assess your oral health and determine whether the upper teeth overlap the lower teeth.

The dentist usually takes X-rays to get a clear idea of your jaw position and review the extent of your overlap.

If your overbite requires treatment, the dentist will assess the severity and refer you to a specialist.

Orthodontic Treatments for Overbite

Orthodontic treatments for overbite can involve different approaches depending on the patient's age and the severity of their overbite.

Potential treatment options include:

1: Traditional Braces

Traditional braces, like metal braces, can encourage the teeth to move into their correct position, which reduces the overbite.

More extensive overbites may require other fixed orthodontic devices.

2: Aligners

Clear aligners like Invisalign treatment can be beneficial for adults, as they're transparent and discreet.

However, your orthodontist may recommend fixed braces if the overbite is severe.

3: Mini-Screws

Orthodontic mini-screws are small pins that are inserted in the jaw bone.

They act as anchors for poorly positioned teeth and are removed after your treatment finishes.

Dr Joyti Vasudev

Orthognathic Surgery

In severe cases, jaw surgery may be the best option for successful overbite treatment.

A surgeon can address any alignment issues by performing corrective jaw surgery, but you may still require orthodontic treatment to refine the alignment.

Tooth Extraction

If overcrowding is a key contributor to your overbite, the dentist might recommend teeth removal to make more space in the mouth.

Once the dentist has more space, they can ensure proper alignment through orthodontic treatment.

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