Palatal expansion is an important method in the field of orthodontics, used to widen the jaw and create space for teeth to move into the correct position. This method not only helps improve crooked teeth but also plays an important role in correcting bite problems and facial shape.
The article below will explore in detail the Palatal expansion procedure, the benefits it brings, as well as factors to note when performing this method. Through that, readers will better understand the importance of Palatal expansion in the process of braces and how it contributes to creating a perfect smile.
What is Palatal expansion?

Palatal expansion is an orthodontic technique used to widen the upper or lower jaw, creating more space for teeth to move into the correct position. This method is often applied when the teeth are too narrow, not enough space for teeth to grow in a straight line, or when there are problems with bite.
Palatal expansion usually involves the use of a special device called an “expander,” which is fixed to the teeth. The device is slowly adjusted to apply pressure to the jaw bones, causing them to gradually separate and widen. This process usually takes several weeks to several months, depending on the amount of expansion needed and how the jaw bones respond.
Palatal expansion can provide many benefits, including improved tooth alignment, increased bite and chewing function, and improved facial appearance. It is often used for children and adolescents, when the jaws are still growing and adapting more easily, but can also be used for adults in certain cases.
Cases in which Palatal expansion is needed
Narrow or crowded jaw

A narrow or crowded jaw is a condition in which the jaw is not wide enough to accommodate all of the teeth comfortably and in a straight line. This results in the teeth having to crowd together to find space, causing misalignment, crookedness, or overlapping. When there is not enough space, the teeth can be pushed outward or inward, causing an unsightly appearance and affecting the function of biting and chewing.
Palatal expansion helps to widen the jaw, creating more space for the teeth to move into the correct position, reducing crowding and improving jaw structure.
Overbite

In some cases, Palatal expansion can help reduce the condition of an overbite. When the jaw is expanded, more space is created for the teeth, allowing them to move and realign more appropriately.
This not only improves the alignment of the teeth, but also enhances the balance between the two jaws, reduces the overbite and improves the function of biting and chewing.
Open bite

An open bite is a condition in which the front teeth do not touch each other when the mouth is closed, creating a gap between the upper and lower teeth. Palatal expansion can assist in correcting the position of the teeth and jaws by widening the jaw, creating more space for the teeth to move and realign properly. This allows the front teeth to come into contact when the mouth is closed, improving the balance between the jaws and enhancing biting and chewing function.
See more: What is underbite? 3+ ways to fix it
Some Palatal expansion methods
Rapid Palatal expander (RPE)
Rapid Palatal Expander RPE is a method of expanding the upper jaw using a special Palatal expansion device that is attached to the upper molars. This device usually has a screw in the middle, when this screw is rotated daily, it will create pressure applied to the jaw bones, helping them to gradually separate and expand. This method is usually applied for a short time, from a few weeks to a few months, and is often used for children and teenagers, when the jaw bones are still developing and adapt more easily.
Slow Palatal expander
Slow Palatal Expander is a method of Palatal expansion that takes place over a longer period of time than rapid Palatal Expander. The Palatal expansion device in this method is also attached to the teeth, but the pressure is applied more gently and gradually. This process can last from several months to a year or more, suitable for cases where the jaw does not need to be expanded too quickly or when gradual adjustments are needed to ensure stable and long-term results.
Palatal expansion with archwire
Palatal expansion with archwire is a method of using orthodontic archwires to expand the jaw. The archwire is attached to the teeth and is slowly adjusted to create traction, helping to expand the jaw. This method is often combined with other orthodontic devices such as braces and archwires to adjust the position of the teeth and jaws comprehensively. Palatal expansion with archwires is often applied to both children and adults, especially in cases where jaw and tooth adjustment is required at the same time.
See more: How long does it take for braces to be effective? 6 ways to estimate
How long does Palatal expansion last?

The time required to complete the Palatal expansion process can vary depending on the method used and the specific condition of each patient. Here are the average times for common methods:
- Rapid Palatal Expander (RPE): The treatment with a Rapid Palatal Expander typically lasts from a few weeks to several months. On average, this process takes approximately 3 to 6 months. The duration includes both the activation phase, during which the expander is adjusted to widen the palate, and the subsequent maintenance phase, which is crucial for stabilizing the jawbone in its new, expanded position. The maintenance phase ensures that the changes achieved during the activation phase are permanent and that the expanded palate does not relapse.
- Slow Palatal Expander: The use of a Slow Palatal Expander generally involves a more extended treatment period. This method is designed to gradually widen the palate over several months to more than a year. The slower pace of expansion allows for more stable and long-lasting changes, reducing the risk of relapse. The gradual approach is particularly beneficial in ensuring that the jaw and surrounding tissues can adapt to the changes without causing undue stress or discomfort. This type of expander is often chosen when a more conservative, controlled adjustment of the palate is desired.
- Arch Wire Expander: The Arch Wire Expander, another method used to widen the palate, can also have a treatment duration ranging from several months to over a year. The exact length of time depends on the amount of expansion required and how the expander is coordinated with other orthodontic treatments, such as braces or clear aligners. The gradual and controlled expansion provided by the arch wire method is tailored to the specific needs of the patient, ensuring that the palate is widened effectively and that the results are stable over the long term. This method is often used when precise control over the expansion process is needed, or when it is used in conjunction with other orthodontic interventions.
After completing the expansion phase, patients often need a maintenance period to ensure the bones and teeth are stable in the new position. This can last for several months or more, depending on each specific case.
See more: How long does it take for braces to stop hurting? 5+ tips to relieve pain
How much does it cost to expand your jaw during braces?

The cost of expanding your jaw during braces can vary depending on many factors, including your location, the doctor’s qualifications, the type of equipment used, and the complexity of your case. Here are some reference prices:
- Rapid Palatal Expander (RPE): Usually costs between 10 million and 30 million VND (depending on the dental facility and the complexity of your case).
- Slow Palatal Expander: Can cost between 15 million and 40 million VND. Prices may vary depending on the length of treatment and other factors.
- Arch Wire Expansion: The cost of this method usually ranges from 20 million to 50 million VND, depending on the type of wire and the amount of adjustment required.
In addition to the cost of the expander, you also need to consider additional costs such as regular check-ups, adjustments, and post-treatment care. For more accurate and detailed information, it is best to consult directly with clinics or orthodontic centers, which can provide specific quotes based on your individual condition and requirements.
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Where is a reputable place to get braces?
Effective and safe braces depend on many aspects such as the doctor’s skills as well as the technology and techniques used. The braces process should be cared for and monitored with a strict and flexible method to limit discomfort and pain for customers. Therefore, choosing a safe and reputable dental clinic is extremely necessary.
Bally Dental has more than 10 years of experience and is one of the leading dental centers in the field of cosmetic dentistry in Vietnam, making wisdom teeth extraction no longer a fear for you. We use modern machinery imported from abroad and fully certified by the Ministry of Health, along with a team of professional doctors with many years of experience in the dental field.
Help you bring the best service support experience at a good price and not worry about pain during surgery as well as ensure no sequelae after braces.
With the passion and enthusiasm of a family, we always strive to bring the best dental services to customers. Bally Dental is committed to accompanying you on your journey of oral health care and giving you a brighter, more confident smile.
The article shares some basic knowledge about Palatal expansion in braces. Hopefully Bally Dental has provided readers with useful information, helping you gain more knowledge about braces.
If you have any questions, readers can contact Bally Dental’s 24/7 hotline to receive free advice directly from the dentists of the dental clinic. Thank you for reading to the end of the article!
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