Clear aligners hold saliva and bacteria against your teeth for 22 hours a day. Here's what that means for your gums and how to keep them healthy.

Clear aligners sit against your teeth for around 22 hours a day, which means anything on the tooth surface stays there too. Plaque that would normally be disturbed by saliva, lips and tongue is instead held in place under plastic. Straightening teeth and keeping gums healthy are two separate projects, and without some care the first can quietly undermine the second.
Berala Dental does not provide Invisalign or clear aligner treatment. It provides the gum care and cleaning that people in aligners need, and refers to an orthodontist for the treatment itself.
If your gums are sore or bleeding during aligner treatment, we can assess them.
Call (02) 9649 6468 · Book online · WhatsApp
A tooth in an open mouth is constantly being washed. Saliva flows across it, buffering acid and carrying bacteria away. Lips, cheeks and tongue disturb the surface all day.
Put a close-fitting plastic tray over that tooth and all of it stops. Whatever is on the surface when the aligner goes in stays against the tooth until it comes out. If that includes sugar from a drink, the acid produced sits there too, with nothing to dilute it.
This is not an argument against aligners. It is the reason cleaning habits have to change while you are wearing them.
The most common issue. Plaque accumulates where the aligner meets the gum, and the tissue responds by becoming red, puffy and prone to bleeding. It is gingivitis, and it is reversible — but it needs noticing.
Aligner treatment often uses small tooth-coloured attachments bonded to the teeth. They create edges that plaque collects against. Left there, the enamel can demineralise and leave a chalky white mark that remains after treatment ends.
Coffee, tea, juice, soft drink and sports drinks all end up trapped. Both the sugar and the acid stay in contact with enamel far longer than they otherwise would. Aligners out for anything other than water is the standard advice from providers, and it matters more than it sounds.
Teeth move through bone. Where bone has already been lost to periodontal disease, moving teeth is a different proposition, and any orthodontic provider will want gum health established first. This is why a periodontal assessment before starting is sensible.
Due a clean while you are in aligners? We can work around your treatment.
Call (02) 9649 6468 · Book online · WhatsApp
Treatment ends but retainers do not. A retainer worn nightly for years creates the same environment every night, and the habits that protected your gums during treatment need to continue.
Fixed retainers — a thin wire bonded behind the front teeth — add another consideration. Tartar builds along the wire where floss cannot easily pass, and that area often needs professional cleaning to stay healthy.
At Berala Dental, a check-up, X-rays and clean is $250. That fee includes three intraoral X-rays, an OPG for new patients and thereafter every two to five years depending on bone loss and periodontal status, intraoral photos, the clean itself and a fluoride treatment, along with a periodontal chart where the clinician judges one is needed. The figure assumes your health fund pays none of it; a fund may contribute depending on your policy, and a written quote against your specific cover can be provided before treatment. Cleans are carried out by dentists and oral health therapists.
Where gum disease is found, treatment is discussed with a written quote before anything begins. Read more about periodontal treatment.
Aligners do not cause gum disease themselves, but they hold plaque against the teeth for most of the day, which can accelerate inflammation if cleaning habits do not change. Gums usually stay healthy where brushing after eating becomes routine.
Providers generally advise water only while aligners are worn. Anything else is held against the enamel rather than washed away, and hot drinks can also affect the plastic.
Usually decalcification — early enamel demineralisation caused by plaque sitting against the tooth. It is why cleaning around attachments matters, and it is worth having assessed.
Generally yes. Teeth move through bone, so gum and bone health is normally established before orthodontic treatment begins.
An assessment establishes whether it is ordinary inflammation or something needing treatment. Berala Dental has cared for gums in Berala since 2002.
Bring your aligners with you and we can check how they sit against your gums.
Call (02) 9649 6468 · Book online · WhatsApp
You can also read about check-ups and cleans or why we advise caution with overseas aligner treatment.
Written and reviewed by Humzah Aly, Oral Health Therapist. This article is general information only and is not a substitute for personalised dental advice. Please see a dental practitioner to discuss what is right for you.