Crossbite
A crossbite is when the upper teeth bite inside the lower teeth on one or both sides. It can affect how evenly forces are shared when you bite and chew.
A crossbite happens when the top teeth sit behind (inside) the bottom teeth in certain areas. Orthodontic treatment can often improve it by adjusting tooth position and bite contact, which can help protect teeth from uneven wear.
What a crossbite usually looks like
In a normal bite, the upper teeth sit slightly outside the lower teeth. In a crossbite, the upper teeth bite inside the lowers in one area (a single tooth) or across a whole side. Some people notice the bite “slides” to one side to find a comfortable fit.
Why crossbites happen
Jaw width relationship: the upper jaw may be narrower than the lower.
Tooth position: individual teeth can tip inward or outward.
Shifting to fit: teeth can move to find a stable contact pattern over time.
Previous treatment changes: bite can drift without retainers.
What typically helps
Treatment aims to guide the bite into a healthier relationship so chewing forces are shared more evenly. Options vary depending on whether it’s a single-tooth crossbite or a wider bite pattern.
Why it’s often worth treating
Crossbites can lead to uneven tooth wear, gum strain, and a bite that doesn’t feel balanced. If one side takes most of the chewing load, it can also contribute to discomfort over time.
How It Works
Not sure where to start? Use these quick links to explore orthodontic treatments, typical UK costs, and helpful guides that explain what different options involve. Whether you're researching braces or clear aligners, comparing pricing, or just getting a feel for what comes next, you can browse at your own pace and come back when you're ready to request a quote.
Ready to get your quote?
Upload your photos and get clinician-reviewed options for braces or clear aligners.
Partnering with leading clinics, Virtual Consultant combines clinical expertise with advanced digital technology — making orthodontic care more efficient, accessible, and rewarding for both teams and patients.