Palatal expander is an orthodontic device used to widen the upper jaw to correct issues like crossbites, crowding, or impacted teeth. Traditionally, palatal expanders are metal appliances that are either fixed or removable and are most commonly used in children and adolescents while their bones are still developing.

The most common type is the Rapid Palatal Expander (RPE), which uses a central screw mechanism that the parent or caregiver adjusts daily to gradually widen the palate. Over time, the expansion creates space in the mouth, improves bite alignment, and allows for proper eruption of permanent teeth.

In contrast, the Invisalign Palatal Expander represents a modern, digital alternative to the traditional metal expanders. This device is 3D printed, made of biocompatible materials, and customized for each patient using digital scans and Invisalign’s proprietary software. Like the traditional expander, it aims to widen the upper jaw, but it does so with more comfort, precision, and less visible hardware. It is particularly appealing to patients and parents seeking a less intrusive and more aesthetic option.
One of the main benefits of the Invisalign expander is its removability and custom fit, which enhances comfort and makes oral hygiene easier. The activation of the expander is typically built into the treatment plan, so there’s no need for manual adjustments with a key, as is common with traditional devices.
Types of Palatal Expanders
| Type | Description | Ideal Age / Use | Key Benefits |
|---|---|---|---|
| Fixed Expander | Anchored to teeth, remains until treatment ends | Children & Adolescents | Strong skeletal effect, predictable results |
| Surgically Assisted / MARPE | Used in adults, sometimes with mini-screws | Adults | Achieves skeletal expansion with minimal dental tipping |
| Removable / Invisalign Expander | 3D printed, digitally customized | Children & Teens | Less visible, comfortable, easy hygiene |
Before & After Jaw Expansion – What Visual Changes to Expect

The most noticeable change after using an expander for teeth is the creation of space in the upper jaw. A palate expander before and after often shows a temporary gap between the front teeth.
Additional visual and functional improvements include:
- Jawline balance improves due to controlled jaw expansion
- Improved nasal airflow, reducing snoring in many cases
- Faster results in children, as their jaw bones are flexible, leading to smooth tooth alignment and natural mid-face growth
Adults require advanced techniques like MARPE before & after, which uses skeletal support to achieve jaw expansion. An orthodontic palatal expander in adults can still deliver excellent results.
Treatment Timeline: Step by Step
- Orthodontist fits the palatal expander in the upper jaw
- Parent/Caregiver turns the jaw expander key as prescribed
- Gradual jaw expansion creates space; a small gap appears between front teeth
- Active expansion continues for 2–4 weeks
- Expander stays in place for 3–6 months to stabilize the jaw bone
- Regular check-ups ensure safe palatal expansion in adults and children
Tip: Keep a small diary to track key turns and progress – it helps monitor expansion and ensures proper treatment.
Expander for Teeth – Benefits Beyond Alignment
An orthodontic palatal expander is thus not only an expander for teeth but also a tool for healthier living and improved confidence. A palate expander before and after treatment does much more than straighten teeth. Palatal expander benefits:
- Better airflow through the nose
- Reduced risk of sleep apnea
- Overall facial balance
- Adults using MARPE before & after experience effective jaw expansion without invasive surgery.
Caring & Maintenance of Expander for Teeth
Success with a palate expander before and after relies on proper care.
Daily Care Tips:
- Turn the screw daily as directed
- Eat soft foods during initial days to reduce discomfort
- Clean the device thoroughly to prevent food buildup
- Rinse and gently brush as advised by your orthodontist
Lifestyle Tips:
- Avoid hard, sticky, or crunchy foods that can damage the device
- Practice speech exercises if you experience a lisp
- Use water flossers or interproximal brushes for better oral hygiene
Why Choose Fort Dental Clinic
- Expert Care – Dr. Arun Nayak, with over 20 years of experience, specialises in orthodontics
- Advanced Techniques – Offers modern treatments like MARPE for adults and Invisalign palatal expanders for children.
- Comprehensive Approach – Addresses issues like mouth breathing and sleep problems through orthodontic solutions.
- Personalised Plans – Provides customized treatment plans as per individual child/adult needs.
- Convenient Location – Easily accessible
Ready to see palatal expander before and after results? Book a consultation at Fort Dental Clinic, Mumbai today. Our orthodontic experts will guide you through personalized treatment plans, modern devices like RPE, MARPE, and Invisalign expanders, and ensure your journey is comfortable and effective.
FAQs
Usually 3–6 months for stabilization, depending on age and expansion type.
It often reduces during retention or further orthodontic treatment.
Yes, using MARPE or surgical-assisted techniques, adults can achieve excellent results.
Mild lisp is normal initially but usually resolves within days.
Possible dental tipping, minor discomfort, or relapse without proper retention.
BDS, MDS – Orthodontics & Dentofacial Orthopaedics Chief Orthodontist, Fort Dental Clinic, Mumbai Dr. Arun Nayak is a leading orthodontist in Mumbai with 20+ years of experience in braces, aligners, and advanced bite correction. As the founder of Fort Dental Clinic, he is known for delivering personalized, technology-driven orthodontic care with a focus on precision and patient comfort.
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