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How Invisalign® Works: A Guide for Dentists

Written by Nathan Hudson | January 21, 2025

Invisalign®, the choice clear-aligner brand from Align Technologies, has transformed orthodontic treatment. It's fair to say... Invisalign is to clear aligners as Kleenex is to tissue paper, it's the household name brand that's hear to stay (just ask your patients).

When Invisalign first came on the scene, the brand touted a virtually invisible alternative to traditional braces for your patients. With its precision, comfort, and aesthetic appeal, Invisalign has become a go-to solution for many dental practices.

But how do I get into Invisalign work, and what makes it so revolutionary (even in 2025)?

This guide explores the science behind Invisalign, the treatment process, and how dentists can effectively use it to improve patient outcomes and grow their practice.

The Basics of Invisalign

Invisalign uses a series of custom-made, clear aligners to gradually move teeth into their desired positions. Each aligner is designed to apply controlled forces to specific teeth, shifting them incrementally over time.

The aligners are made from SmartTrack® material, a proprietary thermoplastic developed by Invisalign for durability, comfort, and precise movement.

How Invisalign Works

For the dental practice, the Invisalign workflow is broken down into several key steps:

1. Initial Consultation

The first step is determining whether a patient is a good candidate for Invisalign. During this visit, the dentist or orthodontist evaluates the patient’s dental alignment, bite, and overall oral health.

  • Ideal Candidates: Invisalign works best for cases involving mild to moderate malocclusions, such as crowding, spacing, overbites, and underbites.
  • Patient Assessment: Severe cases may require traditional braces or other orthodontic treatments.

2. Digital Impressions

Once a patient is deemed suitable for Invisalign, the next step is creating digital impressions of their teeth. This is typically done using a compatible intraoral scanner, such as the iTero Element (which is also manufactured by Align Technologies). Keep in mind, iTero® is the only compatible scanner for submitting cases to Invisalign. Other scanners in the market can be used for clear aligner cases outside of the Invisalign brand.

  • Advantages of Digital Scanning:
    • Eliminates the need for messy, uncomfortable traditional impressions.
    • Provides accurate, high-resolution 3D models of the patient’s teeth.
    • Instantly integrates with Invisalign’s treatment planning software.

3. Treatment Planning

The digital impressions are uploaded to Invisalign’s proprietary  software, which generates a 3D simulation of the patient’s treatment plan.

  • Key Features the Invisalign treatment planning software:
    • Maps out each step of tooth movement.
    • Predicts the number of aligners required.
    • Allows for adjustments to ensure optimal results.

The dentist or orthodontist reviews the treatment plan and makes any necessary modifications before approving it. Once approved, the aligners are custom-fabricated and shipped to the practice.

4. Aligners and Treatment Progress

Patients receive a series of clear aligners, each designed to be worn for 1-2 weeks before progressing to the next set. The aligners are worn for at least 20-22 hours per day, only being removed for eating, drinking, brushing, and flossing.

  • Aligner Features:
    • Snug fit for precise tooth movement.
    • Smooth edges for comfort.
    • Transparent material for discreet wear.

5. Regular Check-Ins

Throughout the treatment, patients visit the dentist for regular check-ups, typically every 6-8 weeks. These appointments allow the clinician to:

  • Monitor progress and make any necessary adjustments.
  • Ensure the aligners fit properly and the teeth are moving as planned.
  • Address patient concerns or compliance issues.

6. Retention Phase

Once the treatment is complete, patients transition to the retention phase to maintain their results.

  • Retainers: Retainers are worn to prevent teeth from shifting back to their original positions. Invisalign offers Vivera® retainers, which are custom-made for each patient.

Benefits of Invisalign

So, besides it's international brand recognition, why do patients and dentists alike still opt for Invisalign?

1. Aesthetic Appeal

Invisalign aligners are nearly invisible, making them a popular choice for adults and teens who want to avoid the appearance of traditional braces.

2. Comfort and Convenience

  • Smooth, flexible material minimizes irritation to the gums and cheeks.
  • Aligners are removable, allowing patients to maintain their normal diet and oral hygiene routines.

3. Predictable Results

With advanced digital planning tools like ClinCheck®, dentists can predict treatment outcomes with high accuracy.

4. Faster Treatment Times

For many patients, Invisalign offers faster results compared to traditional braces, particularly for mild to moderate cases.

How Dentists Can Succeed with Invisalign

1. Master the Technology

Invest in tools like the iTero Element scanner, which simplifies the impression process and integrates seamlessly with Invisalign’s workflow.

2. Educate Patients

Use visuals, such as 3D treatment simulation, to help patients understand their treatment plan and the benefits of Invisalign.

3. Promote Compliance

Encourage patients to wear their aligners for the recommended 20-22 hours per day to ensure optimal results. Offer tips to make compliance easier, such as setting reminders or using aligner cases.

4. Market Your Invisalign Services

You offer the world's leader in clear aligners! Make it known! Advertise Invisalign on your website, social media, and in-office displays. Highlight the benefits of clear aligners and share success stories to attract potential patients.

Getting Started with Invisalign? Choose Renew & Save!

Did you know that you can get an iTero scanner for less than what you might expect?

Renew Digital is proud to be an official certified reseller of iTero Element scanners.

We offer the iTero Element scanners starting at $9,995, which includes the 3D-optimized laptop as well as software, subscription, and warranty for 1 year. And these include basic Invisalign capability built in.

These certified pre-owned scanners are supported just as if they were new, with a dedicated team of service and support staff, giving the same performance as a new unit.

If you’re ready to get started with iTero, or are adding an additional intraoral scanner, give us a call. We can help you save on your next dental imaging purchase. Our sales reps have the industry knowledge and expertise to help you get the most value for your next system.

Also, ask us about Renew Digital bundle deals, pairing an iTero scanner with one of our dental panoramic, pan/ceph or CBCT systems. Start saving today by reaching us at 888-246-5611 or by contacting us online.