Pure Orthodontics > About orthodontics > Common questions about Invisalign

Common questions about Invisalign

Invisalign is the invisible braces method we use here at Pure Orthodontics. Our patients usually have a number of questions about Invisalign, so we've tried to answer the most common ones here. 

What is Invisalign?

Invisalign is the invisible way to straighten teeth without braces. The method uses a series of clear, removable aligners to gradually straighten teeth without the need for metal or wires. It combines 21st century technology and revolutionary manufacturing to customise a treatment for each individual patient. 

How does Invisalign work?

Like brackets and wires of braces, the Invisalign aligner moves teeth through the appropriate placement of controlled force on the teeth. The principal difference is that Invisalign not only controls forces, but also controls the timing of the force application. Each movement is determined by the orthodontic treatment plan, resulting in an efficient force delivery system. 

Is everyone a candidate for Invisalign?

Most patients are. But there are some cases which are not Invisalign suitable. These include more severe orthodontic problems and certain types of bite problems. A consultation will confirm if you are a candidate for Invisalign or not. 

What are Invisalign aligners made of?

Aligners are made of clear, strong, medical grade plastic that is virtually invisible when worn. 

Do dentists need special training in order to use Invisalign?

Yes, specific training is needed. All orthodontists and dentists interested in treating patients with Invisalign must attend training before cases will be accepted from their practice. 

Does Invisalign hurt?

The Invisalign aligners are smooth and undetectable in the mouth but you may experience minor aches and pains within the first few days of changing aligners. This is due to your teeth adjusting to their new positions and a good sign the treatment is working. 

Can I eat or drink with the aligners in?

No. You will need to remove your aligners for eating and drinking anything other than water. We also recommend taking your aligners out if you smoke as it will stain them but remember they must be in your mouth at least 22 hours a day so taking them in and out a lot adds up! 

Can I chew gum with the aligners in?

No, gum will stick to the aligners. 

How do I clean the aligners?

You can clean them with your toothbrush. Use Retainer Brite daily to remove bacteria and keep the aligners clear. A good time to do this is of an evening whilst eating your evening meal. For more information about cleaning your aligners, download our care guide

What happens if I lose an aligner?

If you lose or break an aligner and it has not been worn for the full two weeks, put in your previous aligner until you can see your orthodontist. A new aligner can be ordered for a fee. We recommend keeping your aligners in the Invisalign containers when they are not in your mouth to reduce the risk of losing or breaking them. 

Can I still have Invisalign if I have crowns or a bridge?

Generally this is not an issue. Depending on where the bridge or crowns are will have an effect on the treatment. Invisalign offers the flexibility to move some teeth and not others. 

Will wearing the aligners change my speech?

Like all orthodontic treatments, aligners may temporarily affect the speech of some people, and you may have a slight lisp for a day or two. However, as your tongue gets used to having aligners in your mouth, any lisp caused by the aligners should disappear. 

What happens after treatment to prevent my teeth from moving?

Retention is an essential part of orthodontic treatment. A thin undetectable retention wire is bonded to the back of the front upper and lower six teeth to ensure no tooth movement. A retainer, similar to the Invisalign aligner, must be worn at night as a ‘back up’ to the retention wire. 

How long do you have to wear the retainer and wire?

For as long as you want your teeth to stay straight! 

Still have a question?

If you would like more information about Invisalign, book a free appointment with us today and we can answer any question you have and let you know if Invisalign is a suitable treatment method for you.

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Aged 18 | Damon clear, trauma to upper centrals

Thank you! After hearing only negative experiences when it comes to braces, it feels good to have had a positive one.

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At Pure Orthodontics, we understand that orthodontic treatment comes with a number of questions, which is why we’ve put together answers to some of the frequently asked questions (FAQs) we get.

Common questions


At Pure Orthodontics, we want to make sure orthodontic treatment is affordable for everyone. All price quotations are based on a free initial orthodontic assessment, during which our Specialist Orthodontist, Dr Monica Reinach, will advise on the best and most effective treatment for you. One of our Treatment Coordinators will then go through our various payment options with you.

Cost and finance

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At Pure Orthodontics we offer a free appointment to all of our patients. This allows you to come in, have an assessment and ask questions to find out what treatment would entail.

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