How Long Does Invisalign Take?

Treatment time is one of the most common questions we hear from patients considering Invisalign at 740 Dental in Bournemouth. The honest answer is that it depends on your teeth, but there is a clear picture we can give you before treatment even starts.

At 740 Dental, 95% of Invisalign patients complete treatment within six to eight months. Some straightforward cases finish sooner. More complex cases can take longer. What sets Invisalign apart from traditional braces is that you know your estimated timeline before you commit — because the entire treatment is mapped out digitally in advance.

What Is the Typical Invisalign Treatment Time?

For most adults treating mild to moderate crowding, spacing, or minor alignment issues, six to eight months is a realistic and common outcome. That is faster than many patients expect, and significantly shorter than the average course of fixed braces.

Cases involving more significant crowding, larger gaps, or bite correction tend to take longer. Depending on complexity, treatment in those situations typically runs between 12 and 24 months. These are less common but not unusual, and the team at 740 Dental will be straightforward with you about what your case involves during your free consultation.

It is also worth noting that Invisalign Lite, a shorter version of the treatment designed for minor corrections, can be completed in as little as four to six months. Whether Lite or full Invisalign is right for you depends on the degree of movement required.

How Is My Treatment Timeline Worked Out?

At 740 Dental, every Invisalign case starts with an iTero digital scan. This creates a precise three-dimensional map of your teeth, which is then used to model each stage of tooth movement from your starting position to your final result. That model is called a ClinCheck, and it is something you can see on screen before treatment begins.

The ClinCheck shows exactly how your teeth will move, aligner by aligner, and gives a predicted treatment duration based on your specific case. James Coupe (GDC 75006), an Invisalign Platinum Provider, and Sophia Johnston (GDC 191146), a dedicated Invisalign provider, both use this technology to set realistic, accurate timelines rather than giving a generic estimate. You can read more about both dentists on the meet the team page.

What Affects How Long Invisalign Takes?

Several factors influence treatment duration, and understanding them helps you get the most out of your Invisalign course.

Complexity of your case

The more movement required, the more aligners are needed, and the longer treatment takes. Mild crowding needs fewer stages than a significant overbite or large gaps between teeth. During your consultation, the team will assess exactly what your teeth need and give you a clear, honest timeline.

How consistently you wear your aligners

This is the single biggest factor patients can control. Invisalign aligners need to be worn for 20 to 22 hours per day to move teeth at the planned rate. They are removed only for eating, drinking anything other than water, and cleaning your teeth. Patients who stick to this consistently tend to finish on time or occasionally ahead of schedule. Wearing aligners less often than recommended is the most frequent reason treatment runs longer than planned.

How often you change your aligners

Most patients move to a new set of aligners every one to two weeks. Each set applies a small, controlled amount of pressure to shift the teeth incrementally. Your dentist will advise on the right change frequency for your case, and regular check-in appointments at 740 Dental ensure everything is progressing as it should.

Whether refinements are needed

In some cases, additional aligners are needed toward the end of treatment to fine-tune the final result. This is normal and is built into the Invisalign process. Refinements do not necessarily mean something has gone wrong — they are simply extra steps to achieve the best possible outcome. At 740 Dental, these are managed as part of your ongoing treatment plan.

How Does Invisalign Treatment Time Compare to Fixed Braces?

Fixed braces typically take 18 to 24 months for most adult cases, sometimes longer. Invisalign, for the majority of patients, is considerably faster. The six to eight month average at 740 Dental is one of the reasons clear aligners have become so popular with adults who want effective results without a long commitment.

The other factor is visibility. Fixed braces are worn continuously and are clearly visible throughout treatment. Invisalign aligners are virtually invisible and removable. If you want to know more about how the two approaches compare, our straight teeth and braces page covers both options in detail.

What a Patient Says

“I’ve had lengthy Invisalign treatment and my dentist, Sophia, has been wonderful. She made me fully aware of all options and ensured I was comfortable with my decisions and how the treatment was progressing. Invisalign is not cheap but I felt that Sophia wanted to do right by me and I would go away happy with the outcome.”

Angela Jones-Pert, 740 Dental patient

What Happens After Invisalign Is Complete?

Once your final aligner is finished, retainers are essential to keep your teeth in their new position. Without retainers, teeth have a natural tendency to drift back over time. Every Invisalign package at 740 Dental includes three sets of Vivera retainers as standard, which are among the most durable retainers available and are made by the same manufacturer as Invisalign aligners themselves.

Many patients also choose to combine their Invisalign results with teeth whitening for a complete refresh. Free whitening is included as part of the 740 Dental Invisalign package, so there is no additional cost. If you are considering other cosmetic treatments alongside Invisalign, such as composite veneers, the team can discuss the best sequence of treatments at your consultation.

For full pricing information, including finance options from around £40 per month, visit the Invest in Your Smile fees page.

740 Dental is at 740 Christchurch Road, Boscombe, Bournemouth BH7 6BZ and welcomes patients from Poole, Christchurch, Dorchester, and Salisbury. To book your free Invisalign consultation and get a confirmed treatment timeline for your case, call 01202 031696 or visit the contact page.

Frequently Asked Questions

How long does Invisalign take?

At 740 Dental in Bournemouth, 95% of Invisalign patients complete treatment within six to eight months. More complex cases, including significant crowding or bite correction, can take between 12 and 24 months. Your exact timeline is confirmed during your free consultation using iTero digital scanning, which allows James Coupe or Sophia Johnston to map your teeth and model the required movement before treatment begins.

How often do you change Invisalign aligners?

Most patients change to a new set of aligners every one to two weeks. Each set moves your teeth a small amount closer to the final position planned in your ClinCheck digital treatment preview. At 740 Dental, your progress is monitored throughout treatment with regular check-in appointments to ensure everything is tracking as planned.

How many hours a day do you need to wear Invisalign?

Invisalign aligners should be worn for 20 to 22 hours per day for treatment to progress on schedule. They are removed only for eating, drinking anything other than water, and brushing and flossing. Patients who wear their aligners consistently tend to finish treatment on time or ahead of the original estimate. Wearing them less frequently is the most common reason treatment takes longer than planned.