Invisalign Attachments: What They Are and Why You Get Them
Quick answer: What are Invisalign attachments?
Invisalign attachments are small bumps of tooth-colored composite that a dentist bonds to some of your teeth. They give the clear aligner something to grip, which helps it move teeth in ways that smooth plastic alone struggles with, such as turning or lifting a tooth. Your dentist plans which teeth get them.
They are small bumps on your teeth, not wires or brackets.
They help aligners with harder movements, like rotating a tooth.
Your treatment plan decides where they go, and researchers suggest using as few as possible.
In one study, cheek comfort was lowest on the day they were bonded and improved after that.
You still take your aligners out to eat, brush and floss.
Someone told you that you will need small bumps bonded to your teeth for Invisalign, and now you want to know why. Attachments are a normal part of many aligner plans, and each one has a job. This guide explains what they are, why dentists add them and what the first few days can feel like. At Smyrna Dental Studio in Smyrna, GA, Invisalign is one of the services we offer, and this page is written for anyone who is deciding whether to start.
Why do Invisalign aligners need attachments?
Smooth plastic can push a tooth, but it cannot always grip it. Attachments give the aligner something to hold on to. A 2025 review reports that vertical movements, especially lifting a front tooth, and turning rounded teeth such as canines and premolars, are less predictable with aligners. Those are the jobs attachments are meant to help with.
What the bumps are made of
A 2025 study describes attachments as small, precisely shaped composite buttons bonded to tooth surfaces. Composite is the same kind of material used for tooth-colored fillings. Each bump is shaped for the movement it supports, which is why they do not all look alike.
When they are added
According to Cleveland Clinic, the first aligner is fitted and then small attachments are placed on your teeth to help the aligners move them. The treatment plan comes first: your dentist maps how each tooth should move before any aligner is made. You can read how that process works on our Invisalign treatment page.
Which teeth get Invisalign attachments?
Only the teeth your dentist picks in your treatment plan. Not every tooth needs one. Which teeth get them depends on how each tooth is expected to move, so two people with Invisalign can have very different numbers of attachments.
Fewer can be better for comfort
In a 2025 study of 25 patients, attachments on back teeth were linked to more lip discomfort at every check. The authors suggest planning treatment around the fewest attachments possible. That is a good question to bring to your visit: which movements need them, and which do not?
Want this checked? If you are wondering whether your own plan would need attachments, you can book a visit online or call (770) 863-0005, and our team will talk it through with you.
Do attachments make Invisalign work better?
Dentists add them to help aligners grip and move teeth, but the research is still developing. A 2025 review of seven studies compared two attachment designs with each other, not attachments against none, and found no clear winner. It also found that none produced the movement exactly as the computer plan predicted.
What that means for you
Think of attachments as a helpful tool, not a promise. The review says more high-quality research is needed. Wearing your trays as directed matters too, and our post on whether people really wear Invisalign 22 hours a day explains why.
Do Invisalign attachments hurt?
They can feel uncomfortable at first. In a 2025 study of 25 patients, the day the attachments were bonded was the most uncomfortable, mainly while the cheeks adapted. Cheek comfort improved after about 15 days, and patients felt less insecure and tense by 45 days.
Soreness from a new tray is separate
Cleveland Clinic says pressure or soreness when chewing or removing a tray is common and usually eases within a few days. It suggests soup or soft foods at first. For pain relievers, follow the product label and ask a pharmacist or doctor. Our post on the most painful stage of Invisalign covers the timeline in more detail.
Can you eat and clean normally with attachments?
You still remove your aligners to eat, brush and floss, as Cleveland Clinic advises. The bumps stay on your teeth when the trays come out. Ask your dentist or our team to show you how to clean around them. We cover meals and drinks in our guide to what you can eat and drink with Invisalign.
Frequently asked questions
Are Invisalign attachments noticeable?
They are meant to blend in, since they are tooth-colored and sit under a clear aligner. How visible they are depends on which teeth they are on. In that 2025 study, patients' ratings of how the attachments looked did not change over the first three months. Ask your dentist to show you where yours would go.
How long do Invisalign attachments stay on?
It depends on your plan. They exist to help specific tooth movements, so your dentist decides when each one is no longer needed. We did not find a standard length in the sources we read, so any number you see online is a general guess. Ask for a rough timeline at your visit.
What if an attachment comes off?
Call the office and tell us which tooth it was. Our team will help find the earliest visit available. Do not try to glue it back or scrape off what is left. Ask whether you should keep wearing your current tray until you are seen.
When should I call about discomfort?
Cleveland Clinic lists sharp pain, pain lasting more than a few days, bleeding or swollen gums, and a tray that feels loose or does not fit. Call us if you notice any of these. For swelling with trouble breathing or swallowing, a high fever, or swelling that spreads toward the eye, face or neck, go to the ER or call 911.
Book a visit to see if Invisalign fits your smile
If you are curious whether Invisalign is right for you, we can talk through your goals and what a plan might involve. Dr. Natasha Kanchwala provides general and cosmetic dentistry at our office, and our guide to clear aligners versus Invisalign can help you compare options first. You can book online or call (770) 863-0005, and we will help find the earliest visit available for patients from Smyrna and nearby areas. This is general information, not a diagnosis. A dentist needs to examine you to advise on your situation.