How Orthodontists Predict Your Final Smile: X-Rays, Scans and Simulations

If you’re considering orthodontic treatment, the main question you may have is: What will my smile actually look like at the end of this process?

That mix of excitement and uncertainty is completely normal. The good news is that when you book treatment at our practice, you don’t have to wonder. Thanks to the advanced digital technology we use from your very first appointment, we can map out your entire orthodontic journey and show you your predicted final smile before a single brace or aligner is fitted.

Read on to learn exactly how we do it.

How do orthodontists plan braces? the blueprint

Before any treatment begins, your orthodontist builds a complete picture of your oral health. That means reviewing your medical and dental history, assessing how your teeth fit together, checking jaw alignment and considering facial symmetry. Nothing is considered in isolation.

Not long ago, this process involved messy putty impressions that frequently made patients gag, followed by a fair amount of educated guesswork. Today, the situation is quite different. Modern orthodontic treatment planning uses digital workflows that capture precise data about your teeth, their roots and your bone structure from the outset.

The result? A detailed, personalised treatment plan in which every tooth movement has a purpose, both functionally and aesthetically. Whether you’re considering traditional braces or clear aligners like Invisalign, the planning process is built around you.

Orthodontic X-rays explained

Teeth might look straightforward from the outside, but a lot of what matters in orthodontic care is happening beneath the gum line. Root positions, bone density and hidden impactions all influence how safely and predictably teeth can be moved.

Taking X-rays responsibly

Note that there’s an important distinction between using X-rays as a diagnostic tool and using them as a matter of routine. Research published by the British Orthodontic Society in their London Guidelines for the Use of Radiographs in Orthodontics (4th edition) states that for adults with healthy teeth, orthodontic treatment may be carried out without the need for radiographs, ruling out the practice of taking panoramic X-rays to ‘screen’ asymptomatic patients.

A separate study, titled ‘First do no harm – The impact of financial incentives on dental X-rays’, analysed 1.3 million treatment claims by Scottish NHS dentists and found that in health systems that pay for X-rays, more X-rays are taken, raising valid questions about clinical necessity versus financial incentive.

Rest assured that at Hampstead Orthodontic Practice, we only take X-rays when there is a clear clinical reason to do so.

When a CBCT scan is needed

For more complex cases, our practice uses a CBCT (Cone Beam Computed Tomography) scanner. Unlike a standard flat X-ray, CBCT produces high-resolution 3D images of soft tissues, bones and teeth together. This level of detail allows us to plan tooth movement with a precision that simply wasn’t possible with traditional imaging, helping us make informed decisions before treatment even begins.

3D orthodontic scans that capture the surface details

If you’ve had dental impressions before, you’ll remember the experience: a tray of cold, gloopy alginate material pressed into your mouth while you tried (and probably failed) not to think about it too much. Those days are behind us.

We use the iTero intraoral digital scanner – a small, wand-like device that moves gently around your mouth, capturing thousands of images per arch to generate a highly accurate digital model of your teeth and gums. There’s no mess or gagging, and results are ready in minutes.

This digital scan is more accurate than a physical mould and feeds directly into our planning software. The scan integrates with our other digital records to create a complete 3D picture of your mouth, forming the foundation of your customised treatment plan.

For patients considering Invisalign, the iTero scan is also used to generate the aligner series itself, so the accuracy of this step has a direct impact on your treatment outcomes.

Seeing is believing: before and after smile simulation

One of the most common questions we hear is: “Can I see my smile before braces?” The answer is yes.

The data from your iTero scan and CBCT images are combined in software to produce a 360-degree interactive simulation of your treatment. You can sit in the chair, look at the screen and watch your teeth move – week by week – from their starting position to the predicted final result. Rotate the view and look from different angles to get a genuine preview of your future smile.

What the research says about smile simulation

This kind of technology integrates with cloud-based systems to provide automatic measurement calculations and estimate treatment duration, giving both patient and orthodontist a shared, data-driven understanding of what to expect.

Seeing potential results before treatment starts does something important: It reduces anxiety and builds genuine motivation. When you can see where you’re headed, the process feels less like a leap of faith and more like a plan you can be confident in.

This is particularly useful for patients weighing up their options – whether that’s traditional metal braces, fixed ceramic braces, or clear aligners. The simulation lets you compare potential outcomes across different treatment types.

Accelerating and tracking your progress from home

The digital side of your treatment doesn’t stop once your braces or aligners are fitted, as we use technology to keep your treatment on track throughout – and much of it can be done from your couch.

OrthoPulse™

OrthoPulse™ uses low levels of near-infrared light to stimulate the bone surrounding the roots of your teeth, increasing the rate of tooth movement. It takes just 10 minutes a day and fits easily into your routine, potentially reducing your overall treatment time.

Dental Monitoring and ScanBox Pro

We also use the Dental Monitoring app alongside the ScanBox Pro attachment. Each week, you use your smartphone to take a series of ‘selfies’ of your teeth from specific angles. The AI within the app then compares these images against your original simulation, tracking progress and flagging anything that needs attention.

This means fewer mandatory clinic visits, while still making sure your teeth are moving safely and as predicted. This is one of the more genuinely useful applications of AI in orthodontics, which is particularly beneficial for patients who want to stay informed without constant appointments.

Trusting us and the digital blueprint

Between digital X-rays, 3D scanning, smile simulation and AI-powered progress tracking, modern orthodontic treatment planning has replaced guesswork with genuine precision. You’ll have a clear understanding of your treatment from day one and know what your smile transformation is predicted to look like at the end. Seeing your potential treatment outcomes before committing is reassuring and motivating in that it turns an abstract idea into something you can actually see and engage with.

Would you like to explore your own 3D smile simulation? We’d be happy to help. Book a FREE consultation at Hampstead Orthodontic Practice today, so we can start mapping out your perfect smile.

FAQs

What does orthodontic treatment planning actually involve?

Your orthodontist reviews your dental history, jaw alignment and facial symmetry, then uses digital scans and imaging to map out every tooth movement before treatment starts.

Do orthodontists always need to take X-rays?

Not always. For adults with healthy teeth, treatment can often proceed without them. X-rays are only taken when there’s a clear clinical reason, such as assessing hidden impactions or complex bone structure.

What are 3D orthodontic scans and do they replace old-fashioned moulds?

Yes, they do. A small intraoral scanner captures thousands of images of your teeth to create a highly accurate digital model – no gloopy impression material required. It’s quicker, more comfortable and more precise.

Can I see my smile before braces are fitted?

You certainly can. Digital simulation for teeth straightening lets you watch a week-by-week preview of your tooth movement on screen, right from your consultation chair, before any treatment begins.

How do orthodontists track progress during treatment?

Smartphone-based apps like Dental Monitoring let you take weekly scans of your teeth at home. AI then compares these against your original simulation to check that everything is moving as planned.