Skip to content
No1 The Orthodontic Specialists
Book Free ConsultCall 01332 514 893

Adults · 27 September 2026

Invisalign vs Spark vs Angel Aligners: How a Specialist Chooses

How do clear aligner systems compare? A consultant orthodontist explains the differences that matter, and why your bite, not the brand, decides.

Book a free consultationAll articles

By Dr Anne-Marie Smith · Consultant & Specialist Orthodontist · GDC No. 68456

Clear aligners have transformed orthodontics, and with that has come a confusing menu of brand names — Invisalign, Spark, Angel and more. Patients often arrive convinced they need to pick the “best” brand, having read very different things online. So let me clear this up from a specialist’s chair: the brand on the box matters far less than two other things — the clinician using it, and the type of bite you have.

Aligners versus fixed braces: two different systems

First, a useful distinction. <strong>Clear aligners</strong> and <strong>fixed braces</strong> are genuinely two different systems that work in different ways. Fixed braces grab hold of each tooth and move it directly. Aligners use a series of clear, removable trays to nudge the teeth along in small increments.

Within each of those systems, the various brands are really a variation on a theme. So the aligner brands sit together as one family, and the fixed options — metal, ceramic, lingual — sit together as another.

The aligner brands we offer

We work with the leading aligner systems, including <strong>Invisalign</strong>, <strong>Spark</strong> and <strong>Angel Aligners</strong>. To a patient, they look very similar in the mouth — and in truth they are. They’re all clear, removable trays doing the same fundamental job. Spark is sometimes described as marginally clearer, but once any of them are in the mouth it’s very hard to tell the difference.

What actually differs

If the trays are so similar, what guides the choice of brand? More than anything, it’s the clinician’s familiarity with the system — and that genuinely matters for your result.

Each brand has its own design software that the orthodontist uses to plan exactly how your teeth will move. An orthodontist who knows a particular system inside out can get the software to deliver precisely the movements they want — which means a better, more predictable result for you. I personally tend to use Invisalign, because I know its planning software extremely well and can reliably achieve the outcome I’m aiming for; my colleague Dr Anjli Patel often prefers another system she knows equally well. Neither is “better” in the abstract; what matters is a specialist working confidently with a system they trust.

The decision that really matters: your bite

Here’s the part patients rarely hear, and it’s the most important. The biggest factor in whether aligners are right for you isn’t the brand at all — it’s your bite.

  • Deep bites are one of the harder things to treat with aligners. In these cases, fixed braces often work better and more efficiently, because we can physically grab the teeth and introduce the corrections a deep bite needs.
  • Open bites, by contrast, often respond better to aligners than to fixed braces.

So when you come in, I’m not starting with “which brand?” I’m looking at how your teeth meet, and asking whether an aligner or a fixed brace will get you the best result in the most sensible timeframe. Sometimes both would work well and it’s your choice; sometimes I’ll be honest that one route will serve you far better.

One transparent price

A quick word on cost, because it causes needless anxiety. We charge one price for aligner treatment, whichever aligner system turns out to be right for you. You won’t find yourself quietly steered towards a pricier badge — the fee is the same, so the decision can stay focused entirely on what’s clinically best for your smile.

How we match you to the right system

In practice, by the time we plan your treatment you’ll already have had a friendly chat about the pros and cons of aligners — that they’re removable and discreet, but must be worn for long hours each day and taken out to eat and drink. We then combine that with what your bite needs, and recommend the system and clinician best placed to deliver your result.

Frequently asked questions

Is Spark really clearer than Invisalign? It’s sometimes described that way, but the difference is marginal. Once any of these aligners are in the mouth, they all look discreet and it’s very hard to tell them apart.

Can clear aligners fix any case? No. Aligners are superb for many cases — open bites especially — but deep bites and some complex movements are often better handled with fixed braces. The right tool depends on your bite, which is what a specialist assessment determines.

Does the brand affect the price? Not here. We charge a single price for aligner treatment regardless of which system we use, so the choice stays purely clinical.

Book a consultation

The right aligner decision starts with your bite, not a brand name. Book a consultation with our consultant-led team at No 1 Orthodontics in Derby and we’ll recommend the system that will give you the best result.

4.9146 Google reviews

Reviews from Google

What our patients say

  • tris santostoday · Google

    Beatriz Porto No.1 orthodontist literally lifted up my confidence, they were very precise with how I wanted my teeth to look and they turned out absolutely amazing. The team is so caring and they make you feel so comfortable would definitely recommend to my family and friends if they ever need their teeth perfect.

  • Hester James6 weeks ago · Google

    My daughter had complex dental issues which meant first a removable brace when she was very young then fixed braces as a teen. Now 7 years later she's happy and confident with her teeth. Everyone at No1 was fantastic. During COVID she was still only 10 years old but their reassurance meant she happily went into her appointment without any parents. All the technicians are brilliant, I love the way all staff input is listened to regardless of their level. Makes for a great outcome for my daughter. Thank you so much.

  • Lisa Owen2 months ago · Google

    The girls at No.1 have been incredible throughout the entire process of my braces journey! I have been coming here for 2+ years & they have been amazing with every moment! I have had no complaints & problems whith No.1 at all, even when i had any slight issue with the brace itself, i went straight back to No.1 and they fixed it with no issue’s! I am incredibly grateful for the support that they have all given me & for making me love my smile again! thankyou so much girls!🫶🏻

  • liz maxwell3 months ago · Google

    At 64 years old, I wondered if the 2 years plus aligner plan, was doable or worth it. I took the plunge and I am really pleased with the results. Anjli gave my a lot of information and time for me to make my decision and I found it an easy process to go through. No one ever noticed my clear aligners. Laura was my main contact who oversaw my treatment and she's really easy to ask any questions as you go through treatment, always felt I was in safe hands and is very positive in her approach to get the best outcome for you, so just do it 😀

  • Reyhan Malik4 months ago · Google

    Had a wonderful experience for my 3 year braces journey with the Dental nurses all being friendly and easy going. Most importantly, my teeth problems have been fixed amazingly well.

  • Anthony Clarke4 months ago · Google

    I had a very positive experience with No. 1 Orthodontist in Mickleover. From my initial consultation onwards, the entire team was friendly, professional, and welcoming. The orthodontists took the time to explain the treatment process and answer all of my questions, making me feel informed and comfortable throughout my time as a patient. I chose Angel Aligners and was very impressed with the care, attention, and support I received from the team. Unfortunately, due to personal circumstances, I was unable to complete my treatment. However, my experience with the practice was excellent from start to finish, and I was always treated with kindness, professionalism, and respect. I would happily recommend No. 1 Orthodontist to anyone considering orthodontic treatment and would like to thank the whole team for their outstanding service.

  • Stacey Robinson5 months ago · Google

    My Daughter has had the most amazing experience with her braces .. all staff from reception team to orthodontist have been amazing . They made Lillie feel comfortable and reassured of process at all stages .. thank you so much for bringing Lillie’s smile back

  • Lorna Robinson6 months ago · Google

    Visited for the first time today with my daughter who suffers with anxiety. This first visit was fantastic and delivered with empathy and kindness as well as informative and what our options would be..My daughter was so relieved, thankyou 🙏

Showing 8 of 116

Free consultation

Start your Smile Transformation Today

Fill in the form and our friendly team will be in touch with you shortly.

  • Free and no-obligation, with our Treatment Coordinator
  • Talk through the options and the costs
  • Your written plan and quotation follow, in person or virtually
Are you a
Is this consult for an adult or child?

Please complete this field.

Please complete this field.

Please complete this field.

Please complete this field.

Please complete this field.

Call NowBook OnlineWhatsApp

Start WhatsApp Chat!

No waiting on hold. Ask questions, book appointments, and get answers in real time.

Are you a
Is this enquiry for an adult or child?

Please complete this field.

Please complete this field.

Please complete this field.

Please complete this field.

Or message us directly on WhatsApp