Yes, Invisalign can take longer than expected, usually because extra refinement aligners are needed or the aligners have not been worn enough. It does not always cost more, as many treatment packages include refinements, but some extra charges can apply.
The best way to avoid surprises is to wear your aligners as directed and check exactly what your treatment fee covers before you start.
Find out about our Invisalign braces in Hertfordshire, call us today on 01920 821579 or email us at info@elegancedental.co.uk
Key Points
Invisalign often runs a little longer than first planned, most commonly because of refinement aligners.
Whether you pay more depends on your package, as many include refinements within a set period.
Lost aligners, poor wear time and switching to fixed braces are the most likely causes of extra cost.
How Often Does Invisalign Take Longer Than Expected?
Invisalign quite often takes longer than the first estimate, as most patients need at least one round of refinements.
Whilst Invisalign can often take around 12 to 18 months, it depends on the complexity of the treatment and perhaps if you have a single or double arch. A study of 500 patients found the average Invisalign patient needed 2 to 3 refinement scans and around 2 years of treatment.
Patients who later switched to braces used an average of 80.6 aligners, compared with 64.1 overall, plus an extra 6.9 months in braces.
In a clinical trial comparing aligners and braces, each refinement added roughly 4 weeks to treatment time.
Why Does Invisalign Take Longer Than Expected?
Invisalign usually takes longer than expected because some teeth do not move exactly as the computer plan predicted.
Common reasons include:
Not wearing aligners for 20 to 22 hours a day
Teeth that need extra help to rotate or move into place
Lost or broken aligners that interrupt the sequence
Missed or delayed check-ups
A more complex bite than first expected
Gum problems that need treating before movement can continue
Everyone's teeth respond at a slightly different rate, so a small extension is not unusual.
How Much Longer Can Invisalign Take?
Invisalign most often runs a few weeks to a few months longer than planned, depending on how many refinements you need.
One round of refinements might add only a handful of aligners. Bigger corrections, or treatment that has gone off track through low wear time, can add several months. Your dentist will give you a new timeline each time a refinement is ordered.
Does Invisalign Cost More If It Takes Longer?
Invisalign does not always cost more if it takes longer, because many packages already include refinement aligners.
Comprehensive packages usually cover additional aligners for a set period, so a longer treatment time on its own may not change your fee. Shorter, lighter packages may include fewer refinements, so extra aligners could be charged separately.
The costs for Invisalign are more likely to rise if treatment is extended for reasons outside the plan, such as repeatedly losing aligners or not wearing them enough.
What Extra Costs Could Apply During Invisalign?
The most common extra costs during Invisalign are replacement aligners, additional refinements outside your package and any switch to fixed braces.
Other costs to check include:
retainers at the end of treatment, and replacements later on
teeth whitening or composite bonding to finish your smile
hygiene appointments during treatment
Ask your dentist for a written breakdown so you know what is included from the start. If you would like to spread the cost, you may be able to pay for Invisalign using a payment plan.
How Can I Stop Invisalign Taking Longer Than Expected?
You can stop Invisalign taking longer than expected by wearing your aligners consistently and keeping in close contact with your dentist.
Helpful habits include:
Keeping aligners in for at least 20 to 22 hours every day
Storing them in their case whenever they are out
Using chewies to help each new aligner seat fully
Reporting a poor fit straight away
What Should I Ask Before Starting Invisalign?
Before starting Invisalign, you should ask how long treatment is likely to take and exactly what your fee includes.
Useful questions are:
How many refinements are included, and for how long?
What happens if I lose or break an aligner?
Are retainers included in the price?
What would happen if Invisalign alone cannot finish my treatment?
At Elegance Dental, we use the iTero scanner to plan your treatment in detail and explain the likely timeline and costs clearly at your free consultation. For more information, get in touch today on 01920 821579 or email us at info@elegancedental.co.uk
