An overbite is one of the most common orthodontic conditions treated in children, teens, and adults. However, there is significant clinical confusion surrounding what an overbite actually is.
Many patients use the term to describe protruding front teeth (“buck teeth”), but in orthodontics, an overbite refers specifically to the vertical overlap of the upper front incisors over the lower front incisors.
When that overlap becomes excessive—known clinically as a deep bite—it ceases to be a cosmetic concern and becomes a structural hazard to enamel, gums, and jaw joints.
At Jacaranda Smiles, our board-certified orthodontic specialists treat skeletal and dental bite discrepancies across Plantation, Pembroke Pines, and Margate. Here is the definitive clinical explainer on what an overbite is, the difference between overbite and overjet, the complications of leaving a deep bite untreated, and how modern orthodontics corrects it at any age.
Overbite vs. Overjet: Understanding the Critical Difference
To understand bite mechanics, it helps to distinguish vertical overlap from horizontal protrusion:
- Overbite (Vertical Overlap): Measures how much the upper front teeth cover the lower front teeth vertically when biting down. In an ideal, functional occlusion, the upper incisors cover approximately 1 to 2 millimeters (or 10% to 25%) of the lower incisors. When the overlap exceeds 30% to 50%—or when the lower teeth disappear entirely behind the upper teeth—it is diagnosed as a deep overbite.
- Overjet (Horizontal Protrusion): Measures the horizontal distance between the front surface of the lower incisors and the back surface of the upper incisors. When upper incisors flare outward (“buck teeth”), that is increased overjet, not a deep overbite, though many patients experience both conditions simultaneously.
Dental Overbite vs. Skeletal Overbite
During your orthodontic evaluation, our specialists evaluate whether the overbite stems from the alignment of the teeth or the underlying facial skeleton:
- Dental Overbite: Caused by improper tooth eruption angles, prolonged non-nutritive sucking habits (such as thumb sucking or pacifiers past toddlerhood), or lower arch crowding that forces teeth into an exaggerated vertical curve. The underlying jawbones are normally proportioned.
- Skeletal Overbite (Class II Malocclusion): Caused by a discrepancy in jaw growth—typically an underdeveloped lower jaw (mandibular retrognathia) that sits too far behind a normal or prominent upper jaw (maxilla). Skeletal deep bites are heavily genetic and respond best to early, growth-guided orthopedic interventions.
Why Leaving an Overbite Untreated Causes Clinical Problems
A mild overbite is completely normal and functional. However, an untreated deep overbite leads to progressive, irreversible oral health damage over time:
1. Premature Enamel Attrition and Chipping
In a severe deep bite, the lower front teeth repeatedly collide with the back surfaces (lingual enamel) of the upper incisors every time you chew or swallow. Over years, this friction wears down the incisal edges of the lower front teeth, stripping away enamel, exposing yellow dentin, and making teeth prone to chipping and acute sensitivity.
2. Palatal Tissue Trauma (“Impinging Bite”)
In extreme deep bites, the lower incisors do not contact the upper teeth at all. Instead, they bite directly into the delicate soft tissue of the hard palate behind the upper front teeth. This chronic mechanical trauma causes painful ulcerations, bleeding, and localized gingival recession.
3. Temporomandibular Joint (TMJ) Dysfunction
A deep bite locks the lower jaw into a restricted, backward position, compressing the articular disc within the temporomandibular joint. This chronic strain frequently contributes to jaw popping, clicking, myofascial jaw pain, tension headaches, and neck stiffness.
4. Aesthetic Changes & Facial Aging
A deep bite shortens the lower third of the face (reduced lower facial height). Over time, this causes the chin to appear overly prominent or recessed, thins the appearance of the lips, and accelerates premature facial wrinkling and creases around the mouth.
How Orthodontists Correct an Overbite at Different Ages
Bite correction strategies depend on whether the patient’s jaw bones are still growing:
Phase I Pediatric Interceptive Care (Ages 7 to 10)
Childhood is the ideal biological window for correcting skeletal deep bites because the facial sutures and mandibular condyles are actively developing. Following the American Association of Orthodontists’ guideline for an orthodontic evaluation by age seven, our specialists can use bite-opening appliances, functional expanders, and anterior bite plates to guide mandibular growth and prevent traumatic palatal impingement.
Additionally, preserving arch perimeter early using pediatric space maintainers prevents adjacent teeth from drifting and worsening vertical bite collapse.
Comprehensive Treatment for Teens and Adults
For fully erupted adult teeth, overbite correction focuses on leveling the dental arches by intruding the front teeth (gently pressing them deeper into the alveolar bone) and extruding the posterior molars:
- Invisalign® Clear Aligners with Precision Bite Ramps: Invisalign is exceptionally effective at opening deep bites. Specially engineered bite ramps on the lingual surfaces of the upper front aligners disengage the back teeth, allowing posterior teeth to settle while intrusive forces level the front teeth. Review full lifestyle tradeoffs in our breakdown of the benefits of Invisalign vs. traditional orthodontics.
- Fixed Metal & Ceramic Braces: Low-profile brackets paired with curved archwires (reverse curve of Spee) systematically level the occlusal plane. Intermaxillary elastics (rubber bands) are worn to coordinate upper and lower arch relationships.
- Custom Lingual Braces: Bonded behind the teeth, lingual systems level deep bites discreetly—read everything you need to know about lingual braces.
Adults often wonder if mature jaw structures can handle bite realignment; explore how adult bone remodeling works in our guide: Am I too old for braces? Adult orthodontics explained.
Deep Overbite Correction Options Compared
| Method | Biomechanics | Best Candidate | Typical Duration |
|---|---|---|---|
| Invisalign with Bite Ramps | Simultaneous anterior intrusion and posterior extrusion | Teens & adults wanting clear, removable care | 12 to 24 months |
| Traditional / Ceramic Braces | Archwire mechanics (reverse curve of Spee) + elastics | Moderate to severe skeletal bite discrepancies | 18 to 24 months |
| Phase I Functional Appliances | Orthopedic jaw redirection & bite plates | Growing children ages 7 to 10 | 9 to 14 months |
Preserving Your Corrected Bite for Life
Because the jaw muscles and periodontal ligaments that control your bite maintain memory of the original position, consistent retention is mandatory once active tooth movement finishes. Learn how thermoplastic, wire, and bonded retainers protect against relapse in Retainers 101: Ensuring Your Orthodontic Results Last.
If aligners or clear retainers are used, be sure to review how to clean your Invisalign aligners and retainers to keep appliances hygienic and odor-free.
Frequently Asked Questions About Overbites
Can an overbite fix itself as my child grows?
No. A true dental or skeletal deep overbite does not self-correct with age. In fact, as permanent second molars erupt and facial development continues, an untreated deep bite typically deepens, causing increased crowding, incisal wear, and tissue impingement. Early evaluation ensures the issue is corrected before permanent damage occurs.
Can an overbite cause speech problems or lisps?
Yes. Severe overbites can interfere with tongue placement against the alveolar ridge and upper incisors, making it difficult to pronounce sibilant sounds (like “s,” “z,” and “sh”) clearly. Correcting the vertical relationship restores natural space for comfortable tongue articulation.
Does fixing an overbite change your face shape?
Yes, positively. Correcting a deep bite restores proper vertical height to the lower face, providing better structural support to the lips and chin. This creates a more balanced, youthful facial profile and relieves chronic tension in the chin and jaw muscles.
How do I choose the right provider to fix a complex overbite?
Not all providers manage complex vertical bite mechanics equally. An experienced specialist evaluates skeletal jaw relationships alongside tooth positions to ensure long-term stability. Read our practical checklist on how to choose an orthodontist.
Correct Your Bite with Jacaranda Smiles in Broward County
Whether you want to guide your child’s bite development or eliminate chronic enamel wear and jaw tension as an adult, Jacaranda Smiles provides comprehensive, modern orthodontic care across our convenient South Florida offices in Plantation, East Pembroke Pines, West Pembroke Pines, and Margate.
Schedule your complimentary 3D digital bite consultation today by calling (954) 866-1995 or booking an appointment online.