For most adults who wanted straighter teeth, the choice used to be simple: wear metal braces and put up with the appearance for a year or two, or do nothing. Invisalign changed that. Since its introduction, clear aligner treatment has become the orthodontic option of choice for adult patients who want results without the look of a mouthful of metal.
But clear aligners aren't magic, and not every case is suitable. Here's an honest look at how Invisalign works, what it can and can't do, and how to know if you're a good candidate.
How Does Invisalign Work?
Invisalign uses a series of custom-made, clear removable aligners to move teeth gradually into their target positions. Each aligner in the series is slightly different from the last, applying controlled pressure to specific teeth at each stage.
The treatment process works like this:
- Digital scan and planning - Your dentist takes a digital scan of your teeth (no messy impressions) and uses Invisalign's ClinCheck software to map out every movement required from start to finish
- Aligner fabrication - A full set of aligners is manufactured from medical-grade SmartTrack plastic
- Treatment - You wear each set of aligners for 7 to 10 days before moving to the next, wearing them 20 to 22 hours per day
- Refinements - Near the end of treatment, a new scan is taken and any remaining refinements are made with additional aligner series
- Retention - A retainer is worn after treatment to maintain the final result
What Can Invisalign Fix?
Invisalign is highly effective for a wide range of common orthodontic problems:
- Mild to moderate crowding
- Spacing and gaps between teeth
- Overbite, underbite, and crossbite (in many cases)
- Open bite
- Relapse after previous orthodontic treatment (teeth that have shifted since braces)
Where Invisalign has limitations: Very complex rotations, significant vertical tooth movements, and severe skeletal discrepancies can still be better addressed with fixed braces or in combination with orthodontic treatment. An experienced Invisalign provider will tell you honestly whether your case is suitable.
Invisalign vs Traditional Braces for Adults
| Factor | Invisalign | Fixed Braces |
|---|---|---|
| Appearance | Nearly invisible | Visible metal brackets |
| Removability | Fully removable | Fixed (can't remove) |
| Diet restrictions | None | Yes (hard/sticky foods) |
| Cleaning | Normal brushing | Requires extra care around brackets |
| Treatment time | Similar for suitable cases | Slightly faster for complex cases |
| Comfort | Smooth plastic | Some irritation from wires/brackets |
| Cost | $4,500 to $9,000 | $5,000 to $8,000 |
| Best for | Mild to moderate cases, adults prioritising appearance | All case types, complex cases |
For the right candidate, Invisalign produces results that are indistinguishable from braces. The key advantage for adults is discretion - most people won't notice you're in treatment.
What to Expect During Treatment
First 2 weeks: The aligners feel tight and there is noticeable pressure when you insert each new set. Speech may be slightly affected for the first few days. This settles quickly.
Ongoing: You'll have check-up appointments every 6 to 10 weeks to monitor progress and receive your next sets of aligners. Attachments - small tooth-coloured bumps bonded to specific teeth to help grip - are often used, particularly for rotational movements.
Compliance is everything. Unlike braces, which work 24 hours a day, Invisalign only works while the aligners are in. Patients who consistently wear them for fewer than 20 hours per day will see treatment stall. This is the primary reason some patients don't achieve their expected result.
Refinements are normal. It is very common to need a refinement series of additional aligners at the end of your main treatment. This is not a failure - it's a standard part of the process and is included in most treatment contracts.
Retainers After Invisalign
This is the part many patients underestimate. Moving teeth into a new position is only half the job. Retaining them there is the other half - and it requires ongoing commitment.
After completing Invisalign, you will need to wear a retainer:
- Full-time for the first 3 to 6 months
- Nights only, indefinitely (ideally for life)
Skipping retainer wear is the most common reason for orthodontic relapse. The teeth want to return to where they came from, and they will if not held in place. A fixed (bonded) retainer - a thin wire glued to the back of the front teeth - is an alternative that removes the compliance issue entirely.
How Much Does Invisalign Cost?
In Australia, Invisalign costs typically range from:
- Invisalign Lite (minor cases): $4,500 to $5,500
- Invisalign Moderate: $5,500 to $7,000
- Invisalign Comprehensive (complex cases): $7,000 to $9,000
These figures are for Invisalign provided by a dentist. Payment plans make treatment accessible without having to pay the full amount upfront. Some health funds with orthodontic extras cover a portion of Invisalign costs - check your policy for the orthodontic benefit limit.
Invisalign at Serene Family Dental - Ropes Crossing
We offer Invisalign consultations at our Ropes Crossing practice including ClinCheck digital treatment planning so you can see your projected result before committing to treatment.
We treat patients from Penrith, Blacktown, Mount Druitt, St Marys, Jordan Springs, Kingswood, Glenmore Park, St Clair and throughout western Sydney.
Book a free Invisalign consultation or call (02) 9053 1995.
