All-on-4 Dental Implants

What are All-on-4 Dental Implants?

All-on-4 dental implants represent a revolutionary approach in dental restoration for patients who have lost most or all of their teeth. This method involves placing four titanium implants in the jawbone, which serve as a stable base for a full arch of prosthetic teeth. Developed in the 1990s by Dr. Paulo Malo, the All-on-4 technique has become a popular solution due to its efficiency and long-lasting results.

All-on-4 Procedure

The All-on-4 procedure typically involves the following steps:

  1. Consultation and Planning: A thorough examination, including X-rays and possibly CT scans, is conducted to assess bone density and structure. This helps in planning the precise placement of the implants.
  2. Implant Placement: During the surgery, four titanium implants are strategically placed into the jawbone. The posterior implants are often angled to maximize contact with the bone, providing enhanced stability.
  3. Provisional Prosthesis: On the same day as the surgery, a temporary prosthesis is usually attached to the implants. This allows the patient to leave with functional teeth while the implants integrate with the bone, a process known as osseointegration.
  4. Final Prosthesis: After a healing period of 3-6 months, during which osseointegration occurs, the temporary prosthesis is replaced with a custom-made permanent one, designed for optimal fit and aesthetics.

Benefits of All-on-4 Implants

  • Stability and Durability: The use of four implants provides a strong and stable foundation, minimizing the risk of shifting or slipping.
  • Immediate Functionality: Patients can often receive their provisional prosthesis on the same day as the implant surgery, reducing downtime.
  • Bone Preservation: Implants stimulate the jawbone, preventing bone loss that often accompanies missing teeth.
  • Aesthetic Improvement: The prosthetic teeth are designed to look and feel natural, enhancing the patient’s appearance and confidence.

Comparison with Snap-On Dentures

Snap-On Dentures

Snap-on dentures, also known as implant-retained dentures, are another solution for individuals who have lost multiple teeth. This system involves placing two to four implants in the jaw, to which removable dentures can be snapped on and off.


  1. Implant Placement: Two to four implants are surgically placed into the jawbone.
  2. Healing Period: A period of 3-6 months is required for osseointegration.
  3. Denture Attachment: Custom-made dentures are fabricated and fitted with attachments that snap onto the implants.

Benefits of Snap-On Dentures

  • Improved Stability: Compared to traditional dentures, snap-on dentures offer improved stability and reduce movement during eating and speaking.
  • Cost-Effective: Generally less expensive than full-arch solutions like All-on-4, as fewer implants are needed.
  • Easy Maintenance: The removable nature of the dentures makes them easy to clean and maintain.


  • Stability: All-on-4 implants provide superior stability as they are fixed in place, whereas snap-on dentures, while more stable than traditional dentures, can still experience some movement.
  • Bone Health: Both options help preserve jawbone integrity, but All-on-4 implants offer more comprehensive bone stimulation due to the fixed nature of the prosthesis.
  • Cost: Snap-on dentures tend to be less costly than All-on-4 implants, making them a more accessible option for some patients.
  • Convenience: All-on-4 implants are more convenient for daily life as they do not require removal and reattachment, unlike snap-on dentures.

All-on-4 vs 3-on-6 Implant Bridges

3-on-6 Implant Bridges

The 3-on-6 dental implant system is another full-arch restoration option. It involves placing six implants in the jawbone and attaching three separate bridges to these implants.


  1. Implant Placement: Six implants are surgically inserted into the jawbone.
  2. Healing Period: As with other implant procedures, a healing period of several months is required.
  3. Bridge Attachment: Three dental bridges are fabricated and permanently attached to the implants.

Benefits of 3-on-6 Implant Bridges

  • Natural Feel: The division into three bridges allows for a more natural feel and functionality.
  • Bone Preservation: The six implants provide excellent stimulation to the jawbone, helping to maintain bone density.
  • Aesthetic and Functional: Offers a highly aesthetic and functional solution, as the bridges are designed to look and feel like natural teeth.


  • Stability: Both All-on-4 and 3-on-6 systems offer excellent stability, but 3-on-6 may provide a slightly better distribution of forces due to the additional implants.
  • Bone Health: 3-on-6 implants might offer superior bone preservation benefits due to the increased number of implants.
  • Cost: The 3-on-6 system is typically more expensive than All-on-4 due to the additional implants and complexity of the procedure.
  • Complexity: The 3-on-6 procedure is more complex and may involve longer surgery and recovery times compared to All-on-4.


All-on-4 dental implants, snap-on dentures, and 3-on-6 implant bridges each offer unique benefits and are suited to different patient needs and circumstances.

  • All-on-4 implants provide a fixed, stable, and aesthetic solution that is often completed in a shorter timeframe.
  • Snap-on dentures offer a more cost-effective, removable option that improves stability over traditional dentures.
  • The 3-on-6 implant bridges provide a highly stable and natural-feeling solution with superior bone preservation benefits but at a higher cost and complexity. Consulting with a dental professional is crucial to determine the best option based on individual health, needs, and financial considerations.
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