Can Aligners Fix Teeth That Are Too Far Apart?

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Can Clear Aligners Close Gaps Between Teeth?

Gaps between teeth—also known as diastemas—can affect both the appearance and health of your smile. Whether caused by genetics, missing teeth, or shifting over time, spacing issues can leave you feeling self-conscious and may contribute to dental problems if left untreated. Yes, clear aligners are very effective at closing gaps between teeth. Through a series of custom-fitted trays, aligners apply consistent pressure that gradually moves your teeth closer together, creating a more even, balanced, and attractive smile.

What Causes Gaps Between Teeth?

Gaps or spaces between teeth can be caused by:

  • Genetics (naturally small teeth or wide jaw structure)

  • Missing teeth that allow surrounding teeth to drift

  • Tongue thrusting or incorrect swallowing habits

  • Thumb-sucking during childhood

  • Periodontal (gum) disease, leading to bone and tissue loss

  • Natural tooth movement over time, especially without a retainer

While some gaps are purely cosmetic, others may increase the risk of food impaction, plaque buildup, and gum irritation.

How Aligners Close Gaps

Clear aligners like Invisalign work by gently applying strategic pressure to move teeth into proper alignment. In cases of spacing, aligners:

  • Bring teeth closer together over time

  • Adjust tooth angles to eliminate triangular gaps near the gums

  • Improve overall bite function and symmetry

  • Create a more continuous, unified smile line

Each aligner tray is part of a digitally planned sequence designed to close gaps gradually and safely, ensuring long-term results.

What to Expect During Treatment

The process is straightforward and typically includes:

  • A 3D digital scan of your teeth to create a custom treatment plan

  • A series of clear aligners, each worn for 1–2 weeks

  • 20–22 hours of wear per day to ensure effectiveness

  • Visible improvement in gaps as early as 6 to 12 weeks

  • Total treatment time ranging from 6 to 18 months, depending on case severity

After treatment, retainers are required to maintain your new smile and prevent gaps from reopening.

Are Aligners Right for All Types of Gaps?

Aligners are highly effective for:

  • Mild to moderate spacing issues

  • Multiple small gaps across the smile

  • Gaps caused by drifting or tooth size mismatch

However, in cases of large gaps due to missing teeth or bone loss, additional procedures such as:

  • Dental implants

  • Bridges

  • Bonding or veneers

  • Periodontal therapy

…may be needed to fully restore function and aesthetics. Dr. Bak can advise on a comprehensive treatment plan tailored to your needs.

Dr. Bak’s Experience in Gap Closure with Clear Aligners

With over 25 years of orthodontic experience, Dr. Bak Nguyen designs precision-based aligner treatments that focus on both aesthetics and long-term bite function. Using cutting-edge 3D scanning and personalized planning, he delivers highly effective solutions for patients with spacing concerns.

Book a free virtual consultation to learn more about your case, its treatment time and cost with Dr Bak Nguyen (the real one).

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Yes, aligners can move teeth vertically, but this is generally more challenging than moving teeth horizontally. Vertical movements might be slower and may require additional tools such as attachments to ensure the teeth move as planned. The aligners
Oui, les aligneurs peuvent être efficaces pour traiter une occlusion croisée, en particulier lorsque le problème concerne le positionnement des dents plutôt que l'os de la mâchoire. Les aligneurs fonctionnent en appliq

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