How Long Does Invisalign Take?

February 24, 2026

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Invisalign treatment times vary wildly. Sometimes as little as 6 months but can take as long as 2 years. Each case is unique and requires moving teeth at different rates and closing gaps and fixing crooked teeth at the right time.

What Factors Affect Your Invisalign Timeline?

Several variables determine how long you’ll wear your aligners:

1. The Complexity of Your Case

Simple spacing or mild crowding can be corrected in 6 to 12 months. Moderate crowding, overbites, underbites, or crossbites typically fall in the 12 to 18 month range. More complex bite issues that involve significant tooth movement may require 18 to 24 months or longer. During your initial consultation at any of our three offices, we’ll use advanced digital scanning technology to map out your treatment and give you an accurate estimate.

2. How Consistently You Wear Your Aligners

This is the biggest factor you can control. Invisalign aligners need to be worn 20 to 22 hours per day to stay on track. You should only remove them for eating, drinking anything other than water, and brushing your teeth. Patients who consistently hit that 22 hour target often finish treatment on or ahead of schedule. Failing to hit the wear time is the most common reason treatment takes longer than planned.

3. Age and Biology

Teeth move slightly faster in younger patients because their jawbones are still developing. Adults can achieve excellent results with Invisalign, it just may take a bit longer in some cases. That said, many of our adult patients at LakeStone Orthodontics complete treatment well within the average timeframe.

4. Aligner Change Schedule

Most patients switch to a new set of aligners every one to two weeks. Dr. Patel will determine the right cadence for you based on how your teeth are responding. Patients whose teeth track well may move to weekly changes, which can shorten overall treatment time.

A General Timeline Breakdown

While every patient’s journey is unique, here’s a general idea of what different treatment lengths look like:

6 to 10 months: Minor crowding, small gaps, or slight relapse after previous orthodontic treatment.
12 to 18 months: Moderate crowding, mild bite issues, or a combination of spacing and alignment corrections. This is the most common treatment range.
18 to 24+ months: Complex bite problems, significant crowding, or cases requiring substantial tooth movement across multiple arches.

Tips to Keep Your Invisalign Treatment on Track

Want to finish your treatment as quickly as possible? Here are some tips our team recommends:

Wear your aligners 20 to 22 hours per day. Set a timer or use the Invisalign app to track your daily wear.
Switch to new trays on schedule. Mark your aligner change days on your calendar so you never fall behind.
Keep your aligners clean. Rinse them every time you remove them and brush them gently to avoid buildup that can warp the plastic.
Attend all scheduled appointments. Regular checkups at our Buffalo, Getzville, or Springville offices allow us to monitor your progress and make adjustments as needed.
Use your chewies. These small foam cylinders help seat your aligners properly so your teeth move as planned.

What Happens After Invisalign?

Once your active treatment is complete, the next step is retention. You’ll wear a retainer to keep your teeth in their new positions. Retainers are essential to protecting your investment and making sure your results last a lifetime.

Why Choose LakeStone Orthodontics for Invisalign?

At LakeStone Orthodontics, we’re proud to offer Invisalign as one of our most popular treatment options. Our doctors have extensive experience with clear aligner therapy and use the latest digital technology to plan and track your treatment with precision. We believe orthodontic care should be a positive experience from day one, which is why we offer complimentary consultations, flexible payment plans, and three convenient locations across Western New York.

Ready to Find Out How Long Your Invisalign Treatment Will Take?

The best way to get an accurate timeline is to schedule a complimentary consultation with us. We’ll evaluate your smile, discuss your goals, and create a personalized Invisalign treatment plan designed just for you.

Book your consultation today at one of our offices:

Buffalo: (716) 902-6554
Getzville: (716) 902-6525
Springville: (716) 902-6498

Schedule Your Free Orthodontic Consultation

LakeStone Orthodontics offers complimentary consultations to help you determine if treatment is right for you. During your visit, our team will assess your smile, review your options, and answer any questions you may have.

To book your consultation, please call us or fill out the form.

See What Our Patients Are Saying

Samantha B.

17:12 23 Dec 25

We have been patients of this orthodontic practice for the past 5+ years with 2 children in treatment and 2 more future patients. The transformation under Dr. Patel’s care has been so much better than it was before he started this new practice. Before he took over, our experience was extremely inconsistent and often frustrating. There was a lack of communication amongst the office staff and the previous orthodontist and the patients Since Dr. Patel stepped in, it has been the complete opposite.

Dr. Patel is transparent, knowledgeable, and genuinely invested in the well-being of his patients. He takes the time to explain every step of the process, answers questions thoroughly, and makes both parents and kids feel comfortable and informed. It’s clear he cares deeply about creating a positive experience and delivering excellent results.

Although he had a lot of “undoing” to do when he took over the practice, he has handled it with professionalism, integrity, and a clear commitment to improvement. We are extremely happy with the care our children are receiving now and highly recommend Dr. Patel and his team!!

Danielle C.

16:45 23 Dec 25

Dr. Patel is very attentive and caring. If you have a issue he immediately puts you at ease and assists with concerns. His team is absolutely great and caring as well, they are always so pleasant. My previous scans had a missing far back tooth when I have a tooth there (previous scan from previous owner) Dr. Patel agreed with me that tracking would be fine but that missing tooth would not track with the rest and scanned me for new trays when previous Owner/Dr. Wouldn't and said it was fine to wear with a missing tooth. (I dont like to talk about previous owners however due to the circumstances and how it played a roll in my ortho process i am) I was so happy that Dr. Patel took my concerns seriously, agreed with me and promptly got me new trays. Fast, efficient, and accommodating all before christmas. Highly recommend them!

James C.

14:38 23 Dec 25

Convenient, professional, and pleasant

Riss S.

16:53 11 Dec 25

I had a great experience bringing my son to Dr. Patels dental/orthodontic office! The entire team was so welcoming and patient, and they took the time to answer all of my questions without ever making me feel rushed. Their bedside manner is truly outstanding — kind, professional, and reassuring from start to finish. The service was excellent, and I felt completely comfortable throughout my visit. Highly recommend!