All on 4 Dental Implants: All on 4, All on 5, All on 6, All on 8

All on 4 Dental Implants: All on 4, All on 5, All on 6, All on 8

If you are missing several or more teeth, have discolored or damaged teeth or currently wear dentures, a full mouth restoration with a fixed denture using the All on Four dental implants procedure may be right for you.

Goodness Dental is the leading dental clinic for All on 4 dental implants in Costa Rica and Central America. A highly skilled team of specialists including maxillofacial surgeons, periodontists and prosthodontists work together to provide patients with precisely placed dental implants and artistically lifelike, natural-looking restorations. At Goodness Dental all dental implants come with a Lifetime Replacement Guarantee.

The All-on-4 treatment replaces missing teeth by placing four dental implants in the upper and lower jaws, followed by placement of a permanent, screw-retained replacement prosthesis that provides patients with a full set of teeth to restore dental function and aesthetics. Instead of dentures which must be removed for cleaning, the All-on-4 dental implant technique provides patients with a permanent full set of beautiful, natural-looking teeth. Patients may choose the All on 4 for the entire upper and/or lower set of teeth.

In the past, using traditional implant methods, a full mouth of implants would require 8-10 implants per jaw. The All on 4 technique requires only four implants to be placed in each jaw to secure the fixed prosthesis. When insufficient bone density mandates additional support, five or six implants (instead of four) may be recommended to offer increased stability. When five implants are used, the procedure is called an All on 5. When six implants are used, the procedure is called an All on 6.

The All on 4 Process:

Prior to surgery, CT/CBCT scans are taken to determine bone structure and bone density. After careful analysis and planning, two dental implants are placed at the front of the jaw which typically has a dense bone structure. The remaining two implants are placed in the posterior. In the upper jaw, the posterior implants are positioned to avoid the sinus cavities. In the lower jaw, the posterior implants are placed to avoid the nerve canal. The dental implants will support a denture or bridge with approximately 12 teeth on each arch, resulting in a full set of teeth, supported by only four dental implants per arch.

Some patients may require tooth extractions or bone grafting. Following the extractions or any required bone grafting, the removable denture will be placed or the fixed denture will be anchored to the implants. Please note that the procedure and number of visits may vary from patient to patient.

Who Should Receive an All on 4?

Patients with severe or complete tooth loss, advanced decay or patients with significant jaw bone loss are ideal candidates for this procedure. Patients using removable dentures experience a great sense of satisfaction when they receive a fixed bridge that looks and functions like natural teeth.

How Many Visits Will the All on 4 Take?

During the first visit, the patient receives the dental implants and is fitted with a temporary bridge or denture. This temporary prosthesis is only meant to last a few months and should be treated with great care to avoid damage. The patient will use this temporary prosthesis during the osseointegration stage where the implants fuse to the jaw bone. The patient returns after 4-6 months of healing to receive the permanent fixed bridge, which is generally acrylic. Porcelain or zirconia bridges are also available at an increased cost.


Patients should also consider the disadvantages of the All on 4 dental implants procedure:

  • Patients who have never worn dentures report temporary discomfort when fitted with the fixed dentures. This discomfort lasts only a few days while the patient gets accustomed to the fit of the bridge or denture.
  • Patients also report that the fixed denture may feel bulky at first and may cause problems with speaking as they adjust to the prosthesis. This adjustment period generally lasts only a few days.
  • An All on 4 is not a fully customized solution. For a custom solution, a full mouth restoration with implants and crowns may be recommended.
  • If only four dental implants are placed, the failure of a single implant can delay the placement of the final permanent prosthesis. (Depending on patient bone structure, it may be advisable to place five or six implants in each jaw to increase stability and reduce risk in the unlikely event of implant failure.)


Hover over each photo to see the before photos. For more before and after photos, visit our SMILE GALLERY.

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