The Most Common Orthodontic Problems in Teenagers

The teenage years are often the ideal time for orthodontic treatment. By adolescence, most permanent teeth have erupted, making it easier for orthodontists to identify alignment issues and develop effective treatment plans.

While some orthodontic problems are purely cosmetic, many can affect oral health, bite function, speech, and long-term comfort if left untreated. Identifying these issues early allows treatment to begin before they become more complex.

Understanding the most common orthodontic problems in teenagers can help parents and young patients recognise when professional assessment may be beneficial.

Why Orthodontic Problems Often Become More Noticeable During the Teenage Years

As children grow, their jaws and permanent teeth continue to develop. During this process, underlying alignment issues that may have been subtle in childhood often become more apparent.

Teenagers commonly experience orthodontic concerns because:

• Most adult teeth have erupted
• Jaw growth patterns become clearer
• Crowding may increase as larger permanent teeth emerge
• Bite problems become easier to identify
• Oral habits can influence tooth positioning

This stage of development provides an excellent opportunity to address orthodontic concerns before adulthood.

Crowded Teeth

Crowding is one of the most frequently diagnosed orthodontic issues in teenagers.

It occurs when there is insufficient space within the jaw for all permanent teeth to align correctly. As a result, teeth may overlap, rotate, or become displaced.

Common signs of crowding include:

• Crooked teeth
• Overlapping teeth
• Difficulty flossing between teeth
• Increased plaque build-up
• Uneven smile appearance

Beyond aesthetics, crowding can make oral hygiene more difficult. Areas where teeth overlap are often harder to clean effectively, increasing the risk of tooth decay and gum disease.

Orthodontic treatment can help create the space needed to align teeth properly and improve long-term oral health.

Excessive Spacing Between Teeth

While some teenagers experience crowding, others develop noticeable gaps between their teeth.

Spacing issues can occur for several reasons, including:

• Missing teeth
• Small teeth relative to jaw size
• Abnormal tooth development
• Certain oral habits during childhood

Although gaps may not always affect function, larger spaces can influence bite stability and smile appearance.

Orthodontic treatment can often close unwanted spaces and create a more balanced alignment.

Overbite

An overbite occurs when the upper front teeth overlap the lower front teeth more than normal.

A mild overbite is common and often harmless. However, a more pronounced overbite can contribute to:

• Increased tooth wear
• Difficulty biting and chewing
• Jaw discomfort
• Greater risk of dental trauma to protruding front teeth

In some cases, excessive overbites can also affect facial balance and profile appearance.

Early orthodontic intervention may help guide jaw development and improve bite function.

Underbite

An underbite is the opposite of an overbite.

This occurs when the lower teeth sit in front of the upper teeth when the mouth is closed.

Teenagers with underbites may experience:

• Difficulty chewing certain foods
• Uneven tooth wear
• Jaw strain
• Speech difficulties
• Changes in facial appearance

Because underbites often involve jaw positioning as well as tooth alignment, professional assessment is particularly important to determine the most appropriate treatment approach.

Crossbite

A crossbite occurs when some upper teeth sit inside the lower teeth rather than outside them.

Crossbites may affect a single tooth or multiple teeth and can involve either the front or back of the mouth.

Potential consequences include:

• Uneven tooth wear
• Gum recession
• Jaw asymmetry
• Difficulty chewing comfortably

If left untreated during adolescence, crossbites may contribute to long-term bite problems and uneven jaw development.

Orthodontic treatment can often correct crossbites before they create more significant complications.

Open Bite

An open bite occurs when the upper and lower teeth do not meet properly when the mouth is closed.

Most commonly, there is a gap between the upper and lower front teeth even when the back teeth are touching.

Teenagers with open bites may experience:

• Difficulty biting into food
• Speech challenges
• Excessive strain on back teeth
• Changes in facial appearance

Open bites are sometimes linked to childhood habits such as thumb sucking, although genetics and jaw growth patterns can also play a role.

Treatment typically focuses on improving how the teeth and jaws function together.

Protruding Front Teeth