Key Takeaways
- Most Invisalign treatment takes about 6 to 18 months, depending on how much your teeth need to move.
- Mild cases can finish in as little as 6 months, while complex cases can take two years or longer.
- Wearing your aligners 20 to 22 hours a day and switching trays on schedule keeps treatment on track.
- Retainers protect your results after treatment, and many people wear them at night long-term.
If you’re thinking about straightening your teeth with Invisalign, one of your first questions is probably how long it will take. The honest answer is that it depends on your teeth, and your dentist can give you a real estimate once they’ve looked at your bite and your goals.
Most people complete Invisalign treatment in about 6 to 18 months, with mild cases at the short end and complex cases taking longer. Here is what shapes your timeline and what to expect along the way.
What Affects How Long Invisalign Takes?
How Far Your Teeth Need to Move
Small gaps or slight crowding need less movement than significant crowding or teeth that have rotated. The more distance and rotation involved, the more aligner sets, and weeks, it takes.
Your Bite
Correcting an overbite, underbite or crossbite usually takes longer than a purely cosmetic change, because the way your upper and lower teeth fit together has to shift as well.
How Consistently You Wear Your Aligners
Invisalign only works while the trays are in your mouth. Plan on 20 to 22 hours a day, taking them out only to eat, to drink anything other than water and to clean your teeth. Skipping wear time lets your teeth fall behind the plan, which can add weeks or months.
Your Age and Biology
Invisalign is used for both teens and adults. Teeth move at different speeds from person to person, and adult cases can take somewhat longer. Your dentist can tell you whether Invisalign is a good fit and what pace to expect.
Typical Invisalign Timelines
Every case is different, but these ranges are common:
- Mild cases: often around 6 to 12 months, and sometimes less
- Moderate cases: about 12 to 18 months
- Complex cases: 18 months to two years or longer
Many people finish in about 12 to 18 months. These are general ranges, not guarantees. Your dentist will give you an estimate based on your scans and your goals.
What Happens From Start to Finish
1. Consultation and Scans
Your dentist examines your teeth and gums, talks through your goals and takes digital scans of your teeth. This is also when you find out whether Invisalign is a good fit for your case.
2. Planning and Waiting for Your First Aligners
Your scans are used to map out how your teeth will move, step by step. Custom aligners are then made for you, which usually takes a few weeks. Your team will tell you when to expect them.
3. Active Treatment
You switch to a new set of aligners about every one to two weeks, and each set moves your teeth a small amount. Expect pressure or mild soreness for a day or two after each change. You’ll have regular check-ins so your dentist can make sure your teeth are tracking the plan.
4. Refinements
Teeth don’t always move exactly as planned. If needed, your dentist may order extra aligners to fine-tune the result. This can add some weeks or months, but it helps you finish with the result you were aiming for.
5. Retainers
When your last aligner is done, you’ll move on to retainers. They are an important part of treatment, covered below.
Can You Speed Up Invisalign?
You can’t safely rush tooth movement, but you can avoid delays:
- Wear your aligners 20 to 22 hours a day, every day.
- Switch to your next set on schedule, not early. Moving teeth faster than planned can stress your teeth and gums.
- Keep your aligners clean, and brush before putting them back in.
- Go to every check-in.
- Call your dentist right away if you lose a tray or one doesn’t fit.
When Will You See Results?
Many people notice small changes within the first few weeks, such as teeth starting to line up. Bigger changes show up over several months, and your final result comes at the end of treatment when your last set fits comfortably.
Retainers: Keeping Your Results
After treatment, teeth naturally try to drift back toward where they started, so retainers are not optional. Many dentists recommend wearing them full time for the first several months, then switching to nights. Some recommend nightly wear for the long term. Your dentist will set your schedule, and retainers will need replacing eventually.
Common Questions About Invisalign
Does Invisalign Hurt?
Most people feel pressure or mild soreness for a day or two after starting a new set of aligners, and it fades quickly. Call your dentist if you have sharp pain or if an aligner is cutting into your gums.
Can You Eat With Invisalign In?
No. Take your aligners out to eat and drink anything other than water, then brush your teeth before putting them back in so food doesn’t get trapped against your teeth.
Book an Invisalign Consultation at Bridgeland Dental Care
If you’re wondering how long your own treatment would take, the best next step is a consultation. Our team at Bridgeland Dental Care in Calgary can look at your teeth, explain your options and give you an estimated timeline. Contact us today to book your visit.
