How To Get An Overbite: Orthodontic And Surgical Methods For Correcting Occlusion

To establish a functional overbite and overjet relationship, patients must undergo targeted orthodontic treatment using braces or clear aligners, often paired with intermaxillary elastics, or receive orthognathic surgery for skeletal discrepancies. A healthy physiological overbite requires a 2 to 3 millimeter (or 20% to 30%) vertical overlap of the maxillary central incisors over the mandibular incisors. For individuals correcting an underbite (Class III malocclusion), achieving a standard overbite involves maxillary advancement or mandibular setback surgeries to safely reposition the jaw bones into a stable Class I relationship.

Clinical Assessment & Diagnostic Requirements

Establishing a proper, physiological overbite (Class I occlusion) or modifying the sagittal relationship of the jaw requires systematic planning. Orthodontists and maxillofacial surgeons do not merely shift teeth; they manage the complex interplay between the alveolar bone, skeletal bases, periodontal ligaments, and temporomandibular joints (TMJ).

Before any physical intervention begins, a comprehensive diagnostic workup is mandatory. This process determines whether the bite discrepancy is purely dental (dental arches misaligned on properly positioned jaw bones) or skeletal (the jaw bones themselves are mismatched in size or position).

Diagnostic Checklist & Resource Requirements

• Imaging & Radiography (Essential):
  
  
  • Lateral Cephalometric Radiograph: To measure skeletal angles (SNA, SNB, ANB) and determine the sagittal jaw relationship.
  • Panoramic Radiograph (Panorex): To evaluate root morphology, bone levels, and TMJ condyle health.
  • 3D Cone Beam Computed Tomography (CBCT): Necessary for surgical cases to map airway volume and bone density.
• Intraoral and Extraoral Records:
  
  
  • Digital intraoral scans (e.g., iTero or Trios) to generate high-resolution 3D digital dental models.
  • Standard clinical photography (frontal, profile, smiling, and occlusal views).
• Prerequisite Biological Standards:
  
  
  • Absence of active periodontal disease (pocket depths must be under 3 mm with zero bleeding on probing).
  • Healthy cortical and trabecular bone density to withstand orthodontic force vectors.
  • No active temporomandibular joint dysfunction (TMD) or severe internal derangements.
• Time and Financial Benchmarks:
  
  
  • Orthodontic-only approach: 12 to 24 months; estimated cost of $3,000 to $8,000.
  • Surgical-orthodontic approach (Orthognathic): 18 to 36 months (including pre- and post-operative orthodontics); estimated cost of $20,000 to $50,000 depending on medical insurance coverage.

Clinical Workflow for Establishing a Functional Overbite

When transitioning from an underbite (Class III), an open bite, or an edge-to-edge bite to a healthy, functional overbite (Class I), clinicians execute a highly structured, staged treatment plan.

Step 1: Cephalometric Analysis and Sagittal Planning

The clinician begins by analyzing the patient's lateral cephalometric X-ray. The key metric is the ANB angle, which measures the relationship between the maxilla (upper jaw), mandible (lower jaw), and the skull base. A normal ANB angle is 2 to 4 degrees. In patients with an underbite, this angle is negative. The clinician calculates the exact distance in millimeters that the upper incisors must travel forward (protrusion) and the lower incisors must travel backward (retrusion) to establish a 2 mm vertical overbite and a 2 mm horizontal overjet.

Pro-Tip: Attempting to force an overbite relationship without analyzing the ANB angle can result in severe "bumping" of the roots against the cortical plates of the jawbone, leading to permanent root shortening or bone loss.

Step 2: Leveling and Aligning the Dental Arches

Fixed orthodontic brackets or sequential clear aligners are applied to both arches. Using highly flexible Nickel-Titanium (NiTi) archwires, the clinician levels the Curve of Spee (the anatomical curve of the lower occlusal plane).

1. Bonding: Brackets are precisely positioned on the clinical crowns of the teeth.
2. Wire Sequencing: The treatment progresses from light round wires (0.014-inch NiTi) to heavy rectangular working wires (e.g., 0.19 x 0.025-inch Stainless Steel).
3. Intrusion/Extrusion: To create the vertical overlap of an overbite, the clinician may intentionally extrude the upper anterior teeth or intrude the lower anterior teeth using targeted wire bends or clear aligner attachments.

Step 3: Class III Intermaxillary Elastics and Segmental Forces

To pull the upper teeth forward and the lower teeth backward (thus creating a positive overbite/overjet relationship), intermaxillary rubber bands are introduced.

1. Elastics Placement: Class III elastics are hooked from the lower anterior teeth (canines) to the upper posterior teeth (first or second molars).
2. Force Application: The patient must wear these bands 20 to 22 hours per day, changing them at least three times daily to maintain a consistent force vector of approximately 150 to 200 grams per side.
3. Alveolar Remodeling: This sustained pressure triggers osteoclast activity on the pressure side of the tooth root (breaking down bone) and osteoblast activity on the tension side (building new bone), slowly shifting the arches into the desired overlap.

Step 4: Surgical Jaw Realignment (Orthognathic Intervention)

In cases where the lack of an overbite is skeletal (the lower jaw is physically too large or the upper jaw is too small), orthodontic wires alone cannot bridge the gap. The patient must undergo orthognathic surgery.

1. Pre-Surgical Orthodontics: The orthodontist decompensates the teeth, meaning they align the teeth perfectly within their respective jawbones, which often temporarily worsens the bite appearance.
2. Surgical Execution: The oral and maxillofacial surgeon performs a Bilateral Sagittal Split Osteotomy (BSSO) to slide the mandible backward, a Le Fort I Osteotomy to move the maxilla forward, or a combination of both (bimaxillary surgery).
3. Rigid Fixation: The jaws are secured in their new positions using titanium plates and bone screws, instantly creating a functional overbite and overjet.

Warning: Post-surgical patients must strictly adhere to a non-chewing, liquid-to-soft diet for 6 to 8 weeks to prevent micromovement of the titanium plates, which can cause surgical failure or non-union of the jawbones.

Step 5: Occlusal Detailing and Retention

Once the jaw relationship is corrected to a healthy Class I status, the orthodontist performs micro-adjustments to ensure the teeth intercuspate (fit together like gears) perfectly.

1. Detailing Wires: Braided or highly flexible finishing wires are used to settle the bite.
2. Debonding: The braces or aligner attachments are removed, and the enamel is polished clean.
3. Retention: To prevent the teeth from shifting back to their original positions, the patient is fitted with a fixed lingual retainer wire bonded to the back of the teeth and prescribed a removable Hawley or Essix retainer for lifetime night wear.

Cephalometric and Occlusal Reference Standards

To understand the difference between a healthy overbite, an underbite, and a pathologically deep overbite, clinicians compare patient metrics against standardized cephalometric norms.

Post-Treatment Occlusal Complications and Clinical Remedies

Even under the care of experienced specialists, changing the biological relationship of the jaws can present challenges. Below are real-world complications that can occur during or after the process of establishing an overbite, along with their diagnostic indicators and specific remedies.

• Skeletal or Dental Relapse (The bite shifts back to an underbite or open bite)
  
  
  • Root Cause: Failure to wear retainers, persistent tongue-thrusting habits, or late mandibular growth in patients under the age of 21.
  • Actionable Fix: Implement immediate myofunctional therapy to retrain tongue posture. If the relapse is mild, use a short series of clear aligners with Class III refinements. For severe skeletal relapse in adults, a secondary orthognathic evaluation is required.
• Temporomandibular Joint (TMJ) Pain or Clicking
  
  
  • Root Cause: Rapid or improper shifting of the dental occlusion that forces the mandibular condyle out of its centric relation within the glenoid fossa.
  • Actionable Fix: Pause all active orthodontic forces (such as elastics). Provide a custom, flat-plane stabilization splint to deprogram the masticatory muscles and allow the condyle to seat naturally. Restart orthodontic movements only after the patient is completely pain-free.
• Apical Root Resorption (Shortening of tooth roots)
  
  
  • Root Cause: Excessive, continuous orthodontic force applied to the teeth over an extended period, particularly during aggressive anterior intrusion or retraction.
  • Actionable Fix: Take progress periapical X-rays every six months. If root resorption is detected, suspend all active orthodontic pressure for 2 to 3 months to allow the periodontal ligament to heal, and continue thereafter with lighter, intermittent force vectors.

Frequently Asked Questions

Can you develop an overbite naturally as an adult?

No, adults cannot naturally develop a skeletal overbite, as jaw growth ceases after puberty. However, dental alignment can shift due to periodontal bone loss, tooth loss (which causes neighboring teeth to drift), or persistent habits like chronic thumb-sucking or tongue thrusting, which can tip the upper teeth outward and mimic an overbite.

What is the difference between an overbite and an overjet?

Overbite refers strictly to the vertical overlap of the upper teeth over the lower teeth, measured in millimeters or percentage of coverage. Overjet refers to the horizontal distance between the front surface of the lower teeth and the back surface of the upper teeth. Both relationships must be balanced simultaneously to achieve healthy dental function.

Is a slight overbite considered healthy?

Yes, a slight overbite of 2 to 3 millimeters is the ideal, healthy anatomical standard. It protects the back teeth from excessive wear during chewing, helps guide the jaw smoothly during lateral movements, and prevents the incisors from directly colliding and chipping each other.

How does orthognathic surgery create a normal overbite for underbite patients?

In patients with a skeletal underbite, the surgeon cuts and repositions the jaw bones. By moving the upper jaw forward (Le Fort I osteotomy) or the lower jaw backward (BSSO), the surgeon physically places the upper teeth in front of the lower teeth, instantly establishing a healthy overbite and overjet that braces alone could not achieve.

Schedule Your Clinical Orthodontic Evaluation

Achieving a healthy, properly aligned bite requires precise diagnostic imaging and personalized treatment planning. Contact a licensed, board-certified orthodontist or oral maxillofacial surgeon in your area to begin your journey toward optimal oral health.