What Exactly Is an Overbite?

An overbite occurs when your upper front teeth overlap your lower front teeth vertically. A small amount of overlap is completely normal — dentists consider 2–4 mm (about 25–30% coverage) to be a healthy overbite.

Problems start when that overlap becomes excessive. An overbite beyond 4 mm can lead to uneven enamel wear, jaw discomfort, gum irritation, and even difficulty chewing. Left untreated, deep overbites often worsen with age.

There's an important distinction most blog posts skip:

Dental Overbite vs. Skeletal Overbite

• Dental overbite — caused by the position of your teeth. The teeth themselves have erupted too far or tilted forward. This is what clear aligners can fix.
• Skeletal overbite — caused by a jaw size or position discrepancy. The lower jaw is set too far back relative to the upper jaw. This typically requires braces, jaw surgery, or a combination.

Most adult overbites are dental or a mix of both. A proper assessment — even a remote one — can determine which type you have.

Where Does Your Overbite Fall?

Not all overbites are equal. How much your upper teeth overlap your lower teeth determines whether at-home aligners are a realistic option for you.

Research published in 2025 found that clear aligners achieved a meaningful reduction in overbite for patients with deep bites, though the correction was often less than what the treatment software initially predicted — underscoring the importance of realistic expectations and professional oversight.

For mild to moderate cases (4–8 mm), clear aligners are a clinically validated option. Treatment typically takes 6–18 months depending on severity and compliance.

How Clear Aligners Correct an Overbite From Home

Clear aligners fix dental overbites by applying gentle, controlled pressure to specific teeth. The treatment combines two primary mechanics:

• Intrusion — pushing the upper front teeth upward into the gumline to reduce excessive vertical overlap.
• Proclination control — tilting overjet-causing teeth back into a healthier angle.

Each aligner tray shifts your teeth by approximately 0.2 mm per stage — a small, safe increment that allows bone tissue to remodel naturally around the new tooth positions. Learn more about this process in our guide on how clear aligners move your teeth.

The SmilePerfect At-Home Process

"No Dentist Visit" ≠ "No Dentist"

This is the part most DTC aligner brands gloss over. At-home aligners eliminate the physical office visit — but they should never eliminate professional dental oversight. The difference matters.

SmilePerfect's model works because every treatment plan is:

• Designed by licensed dental professionals — not an algorithm alone.
• Reviewed against clinical criteria — cases that are too complex get flagged and referred out, not forced into at-home treatment.
• Monitored remotely — you submit progress photos, and your dental team checks whether teeth are tracking correctly.

The brands that have shut down in recent years (SmileDirectClub in 2023, Byte suspending sales in 2024) often failed precisely because they over-automated and under-supervised. SmilePerfect's approach keeps the dentist in the loop without requiring you to sit in a waiting room.

If you want to understand how SmilePerfect vets each case before approving treatment, our page on our process walks you through every safeguard.

At-Home Aligners vs. In-Office Treatment for Overbites

For a broader look at how clear aligners compare with braces across all conditions — not just overbites — read our full 5 reasons people choose clear aligners over braces.

Could At-Home Aligners Work for Your Overbite?

Answer 4 quick questions to get a preliminary indication. This is not a clinical diagnosis — but it can help you decide whether a free assessment is worth your time.

How to Get the Best Overbite Results From At-Home Aligners

Overbite correction asks more of your aligners than simple crowding cases. These habits make the difference between a good result and a great one:

• Wear time is everything. 20–22 hours per day, every day. Overbite cases rely on consistent vertical pressure — even a few hours off-schedule can slow your progress significantly.
• Switch trays on time. Don't stretch a tray beyond the recommended 1–2 weeks. Your teeth are staged to move in a precise sequence. Learn more in our real truth about clear aligners guide.
• Use chewies daily. Biting down on aligner chewies for 5–10 minutes helps seat trays properly and ensures even force distribution — especially important for bite correction.
• Upload progress photos on schedule. Your remote dental team can only flag tracking issues if they can see your teeth. Consistent photo uploads are your safety net.
• Wear your retainers. Overbites have a higher tendency to relapse than simple spacing cases. SmilePerfect includes 2 free sets of retainers — use them.

For a complete wear and care guide, check out our post on oral care routines during aligner treatment.

When You Should See a Dentist in Person

At-home aligners aren't for everyone. Be honest with yourself — and if any of the following apply, an in-person evaluation is the smarter move:

• Your overbite is 9 mm or more (severe deep bite).
• You have jaw pain, clicking, or TMJ symptoms — this may indicate a skeletal component.
• You have untreated cavities, gum disease, or missing teeth that need to be addressed first.
• You've had previous orthodontic treatment that relapsed significantly.
• You're under 16 — teens should be evaluated in person, as jaw growth is still in progress.

SmilePerfect's screening process catches most of these during the free assessment. If your case isn't suitable for at-home treatment, you'll be told upfront — and not charged.

For borderline cases, SmilePerfect Premium offers in-clinic scanning and monitoring as an upgrade option.

Frequently Asked Questions