Crowding
Teeth overlapping because there is not enough room in the arch.
Invisalign in Earlwood: straighten your teeth without announcing it
Invisalign straightens teeth using clear, removable aligners instead of metal brackets and wires. It suits mild to moderate crowding, gaps and overbite, and most people around you won’t even notice you’re wearing them. The trays come out for meals, cause only mild pressure for a day or so after each new set, and you simply wear a retainer at night once treatment is complete.
Dr Petronilla Grace leads Invisalign treatment at our Earlwood practice in Sydney’s inner south west. Book a complimentary consultation today and find out whether your case is suitable, with no commitment required.
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What is Invisalign?
Invisalign is a teeth straightening system that uses a sequence of clear, removable aligner trays instead of fixed brackets and wires. Each tray is custom made to your teeth and worn for one to two weeks before you move to the next one in the series.
The trays are made from SmartTrack, a flexible medical-grade plastic designed to hold a steady, gentle force rather than a sharp initial push that fades. They sit closely against the teeth and are taken out to eat and to brush.
Is Invisalign the same as clear aligners?
Not quite. Clear aligners are the category. Invisalign is a brand within it, and the one with by far the longest track record.
The practical differences come down to the planning software, the material, and how much of the treatment is predicted in advance. Invisalign's system has been refined across millions of cases, which means its movement predictions are well evidenced.
How does Invisalign work
Each aligner is shaped slightly differently to the position your teeth are in now. Worn consistently, that difference applies light, continuous pressure, and the bone around the tooth root remodels to allow the tooth to move. Change the tray, and the process repeats a fraction further along.
The whole sequence is planned digitally before the first tray is made, so the movement is mapped from start to finish rather than adjusted as it goes.
What are Invisalign attachments?
Invisalign attachments are small tooth-coloured bumps bonded to certain teeth during treatment. They give the aligner something to grip, which makes rotations and more complex movements possible.
They are not on every tooth and they come off at the end, leaving no trace. Most people find they are far less noticeable than expected, though it is worth knowing they exist before you start.
Some cases also involve IPR (interproximal reduction), where a very small amount of enamel is polished from between two teeth to create room for movement. It sounds more dramatic than it is: the amount removed is minimal, it doesn't weaken the tooth, and it's only used where the plan actually calls for it.
Does Invisalign actually work?
Yes, for cases it is designed to treat. Invisalign has been in clinical use since 1998 and has been used in millions of cases worldwide, and the movements it can achieve predictably are now well documented.
What varies is not whether the technology works, but whether it is being used on the right case and worn properly. Aligners move teeth only while they are in your mouth. A well-planned case worn 20 to 22 hours a day tracks closely to the digital plan. The same case worn twelve hours a day does not, and that is the most common reason treatment disappoints.
The other variable is case selection. Complex movements, large rotations and skeletal jaw discrepancies are harder to achieve with aligners than with fixed braces. A dentist who tells you aligners will fix anything is not doing you a favour. That is why our consultation starts with whether it suits your case, not with how soon you can start.
The honest answer for your specific teeth takes about twenty minutes. Book a complimentary consultation with Dr Petra.
What can Invisalign correct?
Invisalign is suitable for many orthodontic concerns, from mild to moderately complex cases. It can address:
Gaps and spacing
Including gaps left after a tooth has been removed.
Overbite.
Upper front teeth sitting too far over the lower ones.
Underbite and crossbite.
Where the lower teeth sit outside the uppers.
Open bite
Front teeth that do not meet when the back teeth are closed.
Relapse.
Teeth that have drifted back after braces in your teens, which is one of the most common reasons adults come to us.
We offer both Invisalign and fixed braces.
Which means we have no reason to push you either way. Dr Petra will assess your case and tell you which one actually suits it, including if that answer is neither.
Invisalign vs braces: which is better?
Neither one is universally better. Each suits a different case and a different life.
Invisalign's advantages are practical: the trays come out to eat and to clean your teeth, there is nothing metal to catch on your cheeks, and most people find them far less noticeable in daily life and in photos. For cases within its range, it typically finishes in a similar timeframe to braces, sometimes faster, because there is no need to wait for wire adjustments at each visit.
Fixed braces still have the edge for complex movements: large rotations, significant bite correction, or cases needing precise vertical control of a tooth. Braces do not rely on the patient remembering to put a tray back in, which matters for a case that cannot afford inconsistent wear.
The honest way to answer “which is better for me” is to have your case looked at rather than guess from general rules. That is what the consultation below is for.
Invisalign vs at-home aligner kits
At-home aligner brands, the ones that promise a straighter smile from a mail-order impression kit, can look like a cheaper shortcut. They aren't supervised the same way, and that's the actual cost.
Without a dentist examining you in person first, gum disease, bone loss or untreated decay can go unnoticed while your teeth are being moved, and correcting that afterwards is far more expensive than the aligners themselves. The planning software behind these kits is also generally less sophisticated than Invisalign's, with no clinician checking that the plan is realistic for your mouth before it starts.
A dentist-supervised plan means your bone, gums and bite are assessed before anything moves, and checked again as you go.
What Invisalign treatment involves, step by step
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Complimentary consultation.
Dr Petra examines your teeth and bite and tells you plainly whether Invisalign suits your case, or whether something else would serve you better.
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Records and 3D scan.
A digital scanner maps your teeth in a few minutes. No putty trays and nothing to gag on.
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Your treatment plan.
We map the movement digitally and show you the projected result before a single tray is made.
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Aligners fitted.
Your first trays arrive, attachments are placed if your plan calls for them, and we show you how to take them in and out.
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Wear and progress
Change trays as directed, with reviews along the way to confirm your teeth are tracking to plan.
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Refinements.
Most cases finish with a short set of additional trays to fine-tune the detail. This is normal, not a sign anything has gone wrong.
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Retainers.
The part that protects everything you have just paid for.
How long does Invisalign take?
Most cases take between 12 and 18 months, though simple corrections can finish sooner.
Simple cases, such as mild crowding or a small gap, finish at the shorter end. Cases involving bite correction or significant movement run longer. You will be given an estimated number of trays and an estimated finish date at your consultation, based on your actual scan rather than an average.
The variable nobody can plan around is wear time. Aligners left out for hours each day extend treatment, and there is no way around that.
- When will I start seeing a difference? Most people notice movement in the front teeth within the first two to three months, which is usually sooner than they expect. The later stages are about detail and bite, so progress feels slower even though the work is more precise.
- Does Invisalign hurt? No, though it is not entirely without sensation. Most people describe pressure and tightness for the first day or two after changing to a new tray, easing as the teeth settle. It is discomfort rather than pain, and over-the-counter pain relief is rarely needed. Changing trays at night helps, because you sleep through the tightest part. Some people find the edges of a new aligner rub against the tongue or cheek for a day, which settles quickly.
- Will it affect my speech? Slightly, at first. Some people notice a faint lisp for the first few days while the tongue adjusts to the aligner edges. It usually resolves within a week and most people say others never noticed it at all.
Living with your aligners
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Can you eat with Invisalign in?
No, and you should not try. Aligners come out for every meal and snack. Chewing with them in can crack or distort the tray, and trapping food against your teeth under a sealed aligner invites decay.
The upside is that nothing is off the menu. No list of foods to avoid, which is a genuine advantage over fixed braces.
What does take adjusting to is grazing. If you snack throughout the day, you will find yourself taking the trays in and out constantly, and those minutes come out of your wear time. -
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How to clean Invisalign aligners
- Rinse every time you take them out, before saliva dries on them
- Brush gently with a soft toothbrush and mild soap, not toothpaste, which is abrasive and dulls the plastic
- Use cleaning crystals or tablets for a deeper clean once or twice a week
- Never use hot water, which permanently distorts the tray
- Never use mouthwash to soak them, as the colouring stains the plastic
- Brush your teeth before putting them back in, and keep the case with you so trays never go in a napkin
Cloudy or smelly aligners are almost always a cleaning issue rather than a fault. If they stay cloudy after a proper clean, bring them to your next review.
Already in treatment and something does not feel right? Call us on 1300 315 992 rather than moving to the next tray.
How much does Invisalign cost?
There isn't one figure that applies to every case, because Invisalign is priced by how much work the plan involves rather than as a flat fee. What moves the number:
- Case complexity. Mild crowding needing a short run of trays costs less than a case involving bite correction across both arches.
- Number of aligners. More trays in the sequence means more lab work, so cost tracks roughly with treatment length.
- One arch or both. Some cases only need the top or bottom row straightened, which reduces cost.
- Attachments and refinements. Cases needing attachments or a second round of refinement trays cost more than a straightforward run.
- Retainers. Usually included in the treatment cost, but worth confirming what's covered before you commit.
In Sydney, Invisalign typically costs somewhere between $4,500 and $9,000, depending on how much work your case involves. Payment plans are available if you'd rather spread the cost than pay it upfront.
The only way to get a figure that means anything for your teeth is a scan and a plan, which is what the consultation below gives you.
Is Invisalign covered by private health insurance?
Usually in part. Invisalign sits under orthodontic cover rather than general dental, so you need a policy that includes orthodontics, and those typically carry a waiting period of twelve months or longer. Rebates are usually capped by a lifetime orthodontic limit rather than an annual one, so check that figure specifically.
Medicare does not contribute to orthodontic treatment, for adults or children.
What happens after treatment?
You wear retainers, and you keep wearing them.
Teeth have a memory. Left to themselves after treatment they drift back toward where they started, and the first year is when that risk is highest. A retainer holds the result in place while the bone and fibres around the roots stabilise.
Expect full-time wear initially, then nights only, then nights indefinitely. Most people find this easy once it becomes routine. Skipping it is the single most common reason people end up back in aligners a few years later.
Invisalign for teens and kids
Invisalign Teen works the same way as adult treatment, with a few additions designed for a mouth that is still developing.
Aligners for teenagers include eruption tabs, which leave space for teeth still coming through, and compliance indicators, small blue dots that fade with wear so you and we can see how consistently they are being worn. That last one settles a lot of household arguments.
Teenagers generally choose aligners for the same reason adults do. No metal in school photos, nothing to break before a sports carnival, and no food restrictions. The trade-off is the same too. They only work if they are worn, and a teenager who leaves them in a locker will not finish on time.
For younger children, treatment is a different question. Early intervention is sometimes appropriate to guide jaw development and create room for adult teeth, but it is not about straightening for appearance at that age. An assessment will tell you whether anything is worth doing now or whether waiting is better.
Why choose The TLC Dentist
We believe orthodontic treatment should feel reassuring, gentle and tailored to you, from the first consultation through to the final retainer.
A calm, supportive environment
Honest guidance on whether Invisalign is suitable
Modern 3D scanning for a precise and comfortable experience
Clear explanations at every stage
Treatment options suitable for adults, teens and children
A local Earlwood clinic with a warm and welcoming team
The Australian Dentist Association recommends seeing a dentist every 6 months. If you’ve missed yours, contact us to book your general check up now.
Is Invisalign worth it?
For the right case and the right person, yes. It is worth being specific about who that is.
It is worth it if your case is suited to aligners, you will genuinely wear them twenty to twenty-two hours a day, and being able to take them out matters to you socially or professionally.
It is less likely to be worth it if you know you will leave them out, or if your case involves substantial movement that fixed braces would handle more predictably. In that situation you would be paying a premium for a slower, less certain result.
Straightening teeth is not only cosmetic either. Crowded teeth are harder to clean and collect plaque in places a brush cannot reach, which over years means more decay and more gum problems. A bite that does not meet evenly wears unevenly, and that wear is not reversible.
Why Choose The TLCDentist Invisalign (FAQ)
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What if I lose an aligner?
Call us straight away rather than waiting until your next appointment. Depending on where you are in your sequence, you may go back a step, move forward to the next tray early, or need a replacement made. Don’t leave the gap unmanaged, since teeth can start to shift back within days.
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How often do I change aligners?
Every one to two weeks, as directed in your plan. Some stages move faster than others depending on the movement involved.
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Do I still need retainers after Invisalign?
Yes. Retainers are what stop the result reversing, and they’re not optional if you want the outcome to last.
Contact us
complimentary consultation Book your
Find out whether Invisalign suits your case, what it would involve, and what it would cost, before you commit to anything.
251 Homer St, Earlwood NSW 2206
Mon to Fri 9am to 5:30pm with late appointments, Sat 9am to 2pm
Any surgical or invasive procedure carries risks. Before proceeding, you should seek a professional opinion from a qualified dental practitioner. Invisalign is a registered trademark of Align Technology.
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