A crossbite is a common orthodontic issue that occurs when the upper teeth sit inside the lower teeth instead of overlapping them. This condition can affect a single tooth or a group of teeth and can appear at the front (anterior crossbite) or back (posterior crossbite) of the mouth. Crossbites can cause discomfort, functional issues, and aesthetic concerns, but the good news is that effective treatments are available.
What causes a crossbite?
Crossbites can develop due to various factors, including:
Genetic Factors
- Family history of crossbites or other dental misalignments.
- Jaw size discrepancies that are inherited.
Developmental Factors
- Prolonged thumb-sucking or pacifier use during childhood.
- Delayed loss of baby teeth or improper eruption of adult teeth.
- Breathing issues, such as mouth breathing, which can influence jaw development.
Environmental Factors
- Dental trauma or injury during childhood.
- Poor dental habits, such as tongue thrusting.
Why treat a crossbite?
Ignoring a crossbite can lead to several complications, including:
- Tooth Wear and Damage: Uneven pressure can cause excessive wear on certain teeth, increasing the risk of chipping or cracking.
- Jaw Pain and TMJ Disorders: Misalignment can place undue stress on the jaw joints.
- Gum Recession: Crossbites can cause gums to recede in areas where teeth don’t align correctly.
- Difficulty Chewing or Speaking: A crossbite can impact everyday functions, leading to frustration and discomfort.
How are crossbites treated?
Orthodontists like Dr. Wishney at Newcastle Orthodontics specialise in diagnosing and treating crossbites. Treatment plans are tailored to the individual’s needs and may involve one or more of the following:
1. Braces
Traditional braces are highly effective in aligning teeth and correcting crossbites. They use brackets and wires to gradually move teeth into their proper position.
2. Clear Aligners
Clear aligners are a discreet and convenient option. These custom-made trays use gentle pressure on the teeth to correct alignment.
3. Palatal Expanders
For children and adolescents, a palatal expander may be recommended to widen the upper jaw. This device helps create space for proper alignment.
4. Surgical Options
In severe cases involving jaw discrepancies, orthognathic surgery may be necessary to correct the underlying structural issues.
5. Habit-Breaking Appliances
For younger patients, appliances to discourage thumb-sucking or tongue thrusting can prevent crossbites from worsening.
Early intervention matters
Addressing crossbites early can simplify treatment and lead to better outcomes. Orthodontic evaluations are recommended by age 7, as the jaws are still developing and easier to guide into proper alignment during childhood.
Trust the experts at Newcastle Orthodontics
At Newcastle Orthodontics, Dr. Wishney and the team are dedicated to helping you achieve a healthy, beautiful smile. Whether it’s a mild crossbite or a more complex case, they offer personalised care using the latest orthodontic technologies.
If you suspect you or your child may have a crossbite, don’t wait. Schedule a consultation today to take the first step toward a healthier smile.

