What Is a Crossbite?
A crossbite is a misalignment where one or more upper teeth sit inside the lower teeth instead of outside them. It can affect a single tooth or an entire section of the bite, and it can show up on one side of the mouth (a unilateral crossbite) or both sides (bilateral). At Cruz Orthodontics in Chula Vista, crossbite is one of the most common bite problems we diagnose at first evaluations.
There are two main types:
Posterior crossbite: The back teeth are the problem. The upper molars or premolars land inside the lower ones when you close your mouth. This is the most common type and is often linked to a narrow upper jaw.
Anterior crossbite: One or more upper front teeth sit behind the lower front teeth. This is often confused with an underbite, but an anterior crossbite typically involves just a few teeth rather than the entire jaw.
Both types create real problems if left untreated — and both are fixable.
Crossbite vs. Overbite vs. Underbite: What’s the Difference?
Bite problems are not all the same, and the treatment path depends on which one you’re dealing with.
- Overbite: The upper front teeth cover too much of the lower front teeth vertically. We cover overbite treatment in Chula Vista in detail on our overbite page.
- Underbite: The lower jaw protrudes so the lower teeth sit in front of the upper teeth. See our underbite guide for what that correction looks like.
- Crossbite: Instead of a front-to-back misalignment, the teeth are shifted side to side — upper teeth that should sit outside the lowers end up inside them.
All three are malocclusions (bad bites), all three require orthodontic care, and all three get diagnosed and treated at Cruz Orthodontics. The crossbite is unique because it often involves jaw width, not just tooth position, which means the treatment approach is sometimes different from a standard braces case.
Why Crossbites Need to Be Treated
A crossbite is not just cosmetic. It creates a chain of problems that gets worse the longer treatment is delayed.
Uneven jaw growth. When children have an untreated crossbite, the jaw adapts to the misalignment as it grows. Over time this can cause the lower jaw to shift to one side permanently, creating facial asymmetry that becomes much harder to correct as an adult.
Tooth wear. Teeth that bite in the wrong position grind against each other at the wrong angle. That accelerates enamel loss on the affected teeth.
Gum recession. A crossbite puts lateral pressure on teeth they are not designed to handle. This can cause the gum line to recede on the affected teeth, leading to sensitivity and potential long-term periodontal issues.
Jaw pain and TMJ problems. The joint that connects your jaw to your skull (the temporomandibular joint, or TMJ) gets stressed when the bite is off. Patients with untreated crossbites commonly develop headaches, jaw clicking, and facial muscle soreness.
Chewing and speech. A posterior crossbite can make it harder to chew efficiently. An anterior crossbite sometimes affects how certain sounds are formed, which can show up as a lisp or other speech patterns in children.
The good news: crossbites are among the most predictably correctable bite problems in orthodontics, especially when addressed early.
The Right Age to Start Crossbite Treatment
Earlier is better for crossbites — more so than for most other orthodontic issues. Here’s why.
A posterior crossbite caused by a narrow upper jaw is treated with a palatal expander, a device that gently widens the upper jaw by taking advantage of a natural gap (called a suture) that runs down the middle of the palate. That suture fuses as a person ages. In children, it is still open and responsive to expansion. In adults, it is much harder to move without surgical assistance.
The American Association of Orthodontists recommends every child have an orthodontic evaluation by age 7. That is not because treatment always starts at 7 — it is because some problems, including certain crossbites, are significantly easier to treat during the growth years. Learn more about when your child should first see an orthodontist.
For adults, crossbite treatment is still very effective. The tools available — braces, Invisalign, and in some cases surgery for severe skeletal crossbites — can produce excellent results at any age. It simply may take longer and require different mechanics than a childhood case.
Crossbite Treatment Options in Chula Vista
Here is what crossbite treatment looks like at our Chula Vista practice. The right approach depends on your age, the type of crossbite, and how much of the problem is skeletal (jaw position) versus dental (tooth position).
Palatal Expander
This is the go-to treatment for children and early teens with a posterior crossbite caused by a narrow upper jaw. The expander attaches to the upper back teeth and applies gentle, constant outward pressure on the two halves of the palate. Over several months, the jaw widens to the correct width.
Expansion happens first. Once the jaw is the right width, braces or aligners correct any remaining tooth position issues. Many children complete this phase and finish with a beautifully aligned bite before their early teens.
Braces
Traditional braces are effective for both anterior and posterior crossbites, especially when the problem is more dental than skeletal. Metal brackets and wires apply precise three-dimensional forces to each tooth, moving them into correct alignment over time.
For crossbite cases with moderate jaw involvement, braces are often used in combination with an expander. The expander handles the jaw width; the braces handle the individual tooth positions.
Cruz Orthodontics offers braces for patients of all ages. See our adult braces page for what the experience looks like for grown patients.
Invisalign
Invisalign clear aligners can treat mild to moderate crossbites in teens and adults. Custom aligners shift teeth gradually, and certain Invisalign treatment protocols include features that help address minor jaw discrepancies.
Invisalign is a popular choice for adults who want a discreet treatment option and whose crossbite is primarily dental rather than skeletal. It is also available for teens through Invisalign Teen, which includes compliance indicators and replacement aligners.
Surgical Orthodontics
Severe skeletal crossbites in adults — cases where the jaw itself is significantly off position — sometimes require orthognathic surgery in combination with orthodontic treatment. This is not common, but it is the most effective path when the jaw discrepancy is too large for braces or aligners alone.
Dr. Cruz will assess your records at the consultation and let you know if surgical options need to be part of the conversation. Most adults do not require surgery for crossbite correction.
How Long Does Crossbite Treatment Take?
- Palatal expansion phase (children): Typically 6 to 12 months to achieve the target width, followed by a retention period.
- Braces or Invisalign for dental crossbite: Typically 12 to 24 months depending on severity and patient compliance.
- Combined expander + braces: Total active treatment often runs 18 to 30 months, with Phase 1 starting early and Phase 2 (full braces) beginning once the permanent teeth are in.
At your consultation, you will get a personalized estimate based on your or your child’s records — not a generic range. Cruz Orthodontics does not give you a one-size number because crossbite cases genuinely vary.
Crossbite Treatment: Frequently Asked Questions
What is the average cost to fix a crossbite?
Cost depends on the type and severity of the crossbite and which treatment is used. Palatal expanders for children are generally a lower-cost intervention; full crossbite treatment with braces or Invisalign varies by case. The best way to get an accurate number is a consultation — Cruz Orthodontics offers free evaluations and transparent pricing with no hidden fees.
Is crossbite treatment covered by dental insurance?
Many dental insurance plans cover a portion of orthodontic treatment, particularly for children. Coverage for adults varies by plan. Cruz Orthodontics accepts most major dental insurance plans and will verify your benefits before treatment starts. Flexible payment plans are available for the balance not covered by insurance.
What age is best to fix a crossbite?
The ideal window for posterior crossbites is before the palatal suture fuses, typically before the mid-teen years. The AAO recommends an orthodontic evaluation by age 7 so early problems can be caught while the jaw is still growing. Adult crossbite treatment is still effective — it may simply require different tools or longer treatment time.
Is it worth fixing a crossbite?
Yes. An untreated crossbite does not stay the same — it typically causes jaw asymmetry, accelerated tooth wear, gum recession, and TMJ stress over time. These problems become more difficult and more expensive to correct the longer they go unaddressed. Treating a crossbite early protects both the bite and the face.
How Much Does Crossbite Treatment Cost in Chula Vista?
Treatment cost varies by case type and patient age. Crossbite treatment at our Chula Vista practice is priced based on what your specific case requires — a single-tooth dental crossbite corrected with aligners costs less than a full skeletal crossbite requiring an expander followed by braces. Many dental insurance plans cover a portion of orthodontic treatment for children; adult coverage depends on your plan.
Cruz Orthodontics accepts most major insurance plans and offers flexible payment plans to fit most budgets. The consultation is where you get a real number for your case — not a range. Book online or call (619) 421-5060.
What to Expect at Your First Consultation
The consultation is a no-pressure evaluation. Patients come to Cruz Orthodontics in Chula Vista from Eastlake, Otay Ranch, Bonita, and San Ysidro for crossbite evaluations — here is what the appointment looks like:
- Records. X-rays and photos of your teeth and jaw give the orthodontist a full picture of the bite.
- Diagnosis. Dr. Cruz will identify the type of crossbite, whether it is dental or skeletal, and what structures are involved.
- Treatment options. You will hear exactly which approaches apply to your case, with the tradeoffs of each explained clearly.
- Timeline and cost. You get a realistic treatment estimate and learn about payment and financing options.
Most consultations take about an hour. You leave with a clear diagnosis and a recommended plan, not just a handout.
Schedule Your Crossbite Evaluation in Chula Vista
Cruz Orthodontics is located at 1415 Ridgeback Road, Suite 3, Chula Vista, CA 91910. We treat crossbites in children, teens, and adults, and we see new patients throughout the week.
Call us at (619) 421-5060 or book your consultation online. A crossbite that gets caught early is a problem that does not become a bigger one.