Keeping your Invisalign aligners clean is one of the most important parts of a successful treatment experience. Because the aligners sit directly against your teeth for up to 22 hours each day, any build-up of bacteria, food residue or plaque can affect both the clarity of the trays and the health of your teeth and gums. Caring for your Invisalign aligners properly is straightforward once you establish a routine, but there are some key habits that every patient should know from the outset.
Many patients are surprised to discover how much of a difference good aligner hygiene makes, not only to the aesthetics of the trays — keeping them clear and less noticeable — but also to their overall oral health during treatment. Neglected aligners can develop a milky or discoloured appearance and harbour bacteria that increase the risk of tooth decay and gum problems. The guidance here covers everything you need to keep your aligners in excellent condition throughout your treatment.
Rinse Your Aligners Every Time You Remove Them
Each time you take your aligners out — whether for a meal, a drink or to clean your teeth — you should rinse them immediately under lukewarm water. This removes saliva and prevents it from drying on the surface, where it can become a breeding ground for bacteria. Never use hot water, as this can warp the thermoplastic material and distort the precise fit that makes Invisalign effective.
Rinsing is a quick and simple step that makes a significant difference over time. It takes only a few seconds but dramatically reduces the amount of residue that accumulates on the surface of the trays.
Clean Your Aligners Morning and Night
A thorough clean should happen at least twice daily — ideally each time you brush your teeth. To clean your aligners properly:
- Use a soft-bristled toothbrush and a small amount of clear, unscented liquid soap or the Invisalign cleaning crystals provided or recommended by your clinician
- Gently brush the inside and outside surfaces of the aligner, paying attention to any grooves or attachment points
- Rinse thoroughly under lukewarm water before reinserting
It is important to avoid toothpaste when cleaning aligners. Most toothpastes — even those marketed as gentle — are mildly abrasive. Over time, this can create micro-scratches in the surface of the aligner, making it appear cloudy and providing more surface area for bacteria to cling to. As noted on the Wikipedia page on clear aligners, liquid soap and a spare toothbrush is a reliable and recommended cleaning method for aligner appliances.
Always Brush and Floss Before Reinserting
This is one of the most critical habits for maintaining good oral health during Invisalign treatment. If you reinsert your aligners over teeth that have not been cleaned, you are essentially trapping food particles and bacteria against the tooth surface — creating exactly the conditions that lead to decay.
Brushing and flossing before putting your aligners back in ensures that the sealed environment created by the aligner remains as clean as possible. Some patients find it useful to carry a travel toothbrush and small tube of toothpaste when out and about, so they can maintain this habit even when away from home.
Soak Your Aligners Regularly
In addition to daily brushing, soaking your aligners helps to keep them hygienic and odour-free. The following soaking options are commonly recommended:
- Invisalign cleaning crystals: Designed specifically for the purpose, these dissolve in water and provide a thorough clean in around 15 minutes
- Denture cleaning tablets: A cost-effective alternative that works in a similar way — check that they are suitable for clear retainers
- Diluted white vinegar: A natural option — soak for 20 minutes, then rinse thoroughly
- Hydrogen peroxide solution: A 50/50 mix with water can be effective, though check with your clinician before using this method
Avoid soaking aligners in mouthwash. Many mouthwashes contain colouring agents that can tint the aligners, diminishing their transparency.
What to Avoid
Knowing what not to do is just as important as knowing the right steps to take. Here are the most common mistakes Invisalign patients make when it comes to aligner care:
- Leaving aligners out in the open: When not in your mouth, aligners should always be stored in their case. Leaving them on a table or wrapped in a tissue puts them at risk of being lost, damaged or thrown away by mistake
- Eating or drinking with aligners in: Food and drinks (other than plain water) should always be consumed without aligners. Even seemingly harmless drinks like fruit juice or tea can stain the trays or introduce sugars that sit against the teeth
- Using hot water: As mentioned, heat can warp the plastic and ruin the fit
- Coloured or scented soaps: These can transfer dye or fragrance to the aligner material
- Skipping cleaning when tired: A one-off missed clean is rarely catastrophic, but making it a habit quickly leads to discolouration and hygiene issues
Caring for Your Aligner Case
The aligner case itself also requires regular attention. Rinse it daily and allow it to air-dry rather than sealing it while wet, as moisture trapped inside can encourage mould. Replace your case if it becomes cracked or difficult to clean — your clinician can usually provide a replacement.
Aligner Care Schedule at a Glance
| Time of Day | Recommended Action |
|---|---|
| Morning | Remove aligners, rinse them, brush teeth, clean aligners, reinsert |
| Before each meal | Remove aligners, store in case |
| After each meal | Brush teeth and floss, rinse aligners, reinsert |
| Evening | Remove aligners, brush and floss thoroughly, clean aligners, reinsert |
| Weekly | Soak aligners using crystals or appropriate solution |
| When switching trays | Give old trays a final rinse and store — they may be needed if the new set is lost |
Handling Attachments
Many Invisalign patients have small tooth-coloured attachments bonded to their teeth to help the aligners exert the forces needed for more complex tooth movements. If you have attachments, pay extra attention to cleaning around them when brushing your teeth. Plaque can accumulate where the attachment meets the tooth surface, so using an interdental brush alongside your regular toothbrush is recommended.
What to Do If an Aligner Is Lost or Damaged
Contact your dental practice as soon as possible. Depending on where you are in your treatment cycle, your clinician may advise you to move on to the next set of aligners or to go back to wearing the previous set temporarily. Do not go without aligners for an extended period, as teeth can shift back and the next set of aligners may no longer fit correctly.
Travel Tips
If you are travelling, pack your aligner case, a travel toothbrush, toothpaste, and a supply of cleaning crystals or tablets. Always carry your aligners in their case when you take them out during flights or meals, and never wrap them in a napkin. Many aligners have been accidentally thrown away at restaurants or airports by patients who did exactly this.
Keep Your Previous Aligners
When you progress to a new set of aligners, do not discard the previous set straight away. Keep them stored in a labelled case or small bag. If the new set is lost or damaged, your clinician may advise you to revert to the previous set temporarily to prevent any teeth from shifting whilst a replacement is arranged. Holding onto two or three previous sets throughout your treatment provides a useful safety net and costs nothing beyond a little storage space.
Caring for your aligners well is an investment in the outcome of your treatment, and it is one of the simplest things you can do to keep things on track. If you have any questions about your aligner care routine or would like to discuss starting Invisalign treatment, do not hesitate to get in touch with us. At Tarbert Dental Surgery, our team is here to support you at every step of your treatment journey. Call us on 01880 820387 and we will be happy to help.