What Is All-on-4 and Am I a Good Candidate?

What All-on-4 Actually Is

All-on-4 is a full-arch dental implant technique where an entire row of teeth — upper or lower — is supported by just four strategically placed titanium implants. The two front implants go in vertically; the two rear implants angle backward at up to 45 degrees, which allows them to reach more bone without requiring bone grafts in most cases.

A full set of fixed teeth — typically a temporary prosthesis first, then a permanent one — is attached to those four implants. The result is a complete arch of teeth that is screwed in place, not removable by the patient, and functions much like natural teeth.

The "one day" claim refers to the fact that temporary teeth are attached the same day as surgery. You go in without teeth (or with failing teeth that are extracted that day) and leave with a full set. The permanent final restoration comes several months later, after the implants have fully integrated with the bone.

All-on-4 vs. Traditional Dentures

Traditional removable dentures sit on top of the gums and are held in place by suction, adhesive, or clasps on remaining teeth. They work — but they have real limitations most patients discover over time:

• Chewing efficiency is roughly 20-25% of natural teeth. Hard foods, corn on the cob, steak — difficult or impossible.
• Dentures move. They can shift while eating or speaking, causing embarrassment and discomfort.
• As bone continues to resorb (because dentures don't stimulate it), the fit changes. Dentures need relining and eventually replacement.
• Many patients find dentures psychologically difficult to accept — they feel like a constant reminder of tooth loss.

All-on-4 implants are fixed in the bone. They don't move. Chewing efficiency is dramatically higher. Bone loss slows because the implants provide the stimulation that dentures cannot. And most patients report that the psychological difference is significant — fixed teeth feel like teeth, not an appliance.

All-on-4 vs. Individual Implants

If a patient is missing all or most of their teeth, individual implants for every tooth would require 14-28 implants per arch, extensive surgery, and significantly higher cost. All-on-4 achieves a comparable result with four implants per arch — making full-arch reconstruction accessible to far more patients.

The tradeoff: if one implant in an All-on-4 fails, it affects the entire arch. Individual implants fail independently. This is an important consideration but not a reason to avoid All-on-4 — the success rate with Nobel Biocare components and proper case selection is very high.

Who Is a Good Candidate?

All-on-4 was specifically designed to work with less bone than traditional implant techniques require. The angled rear implants reach into denser bone in the back of the jaw, which is often more intact even after significant tooth loss. This means many patients who were told they didn't have enough bone for implants may still qualify for All-on-4.

Good candidates generally:

• Are missing all or most teeth in an arch, or have teeth that cannot be saved
• Have sufficient bone in the front of the jaw (where the angled implants anchor)
• Are in reasonable overall health with no conditions that severely impair healing
• Are non-smokers or willing to quit (smoking significantly increases failure risk)
• Have realistic expectations about the timeline — the final restoration takes 4-6 months after surgery

Patients with severe bone loss in the front of the jaw, uncontrolled diabetes, or certain other conditions may not be candidates. A cone beam CT scan is the definitive way to assess whether the bone structure supports the procedure.

What the Process Looks Like

A typical All-on-4 timeline:

• Consultation and imaging: CT scan, treatment planning, cost estimate. 1-2 appointments.
• Surgery day: Any remaining teeth are extracted. Four implants are placed. A temporary fixed prosthesis is attached the same day. You leave with teeth.
• Healing period: 4-6 months for osseointegration — the implants fuse with the bone. You live on the temporary teeth during this time. Diet modifications (soft foods) for the first few weeks.
• Final restoration: The permanent prosthesis is fabricated and attached. This is the final result — typically zirconia or acrylic on a titanium framework.

All implant placement at Elite Dental can be done under sedation. For most All-on-4 patients, IV sedation is the most comfortable option for a procedure of this scope.

What It Costs in East Tennessee

All-on-4 pricing varies by practice, materials, and case complexity. In East Tennessee, a full arch typically ranges from $18,000 to $28,000. Full mouth (both arches) ranges from $32,000 to $50,000. Premium materials like zirconia cost more than acrylic composites but are more durable and natural-looking over the long term.

Dental insurance rarely covers implants, though some plans cover extraction or anesthesia components. CareCredit and other financing can break the cost into monthly payments. For many patients, the comparison to a lifetime of denture maintenance, relining, and replacement makes the All-on-4 investment straightforward math.

How to Find Out if You Qualify

The only way to know for certain is a consultation with imaging. At Elite Dental, Dr. Johnson holds Nobel Biocare implant surgery certification — the same implant system used in the original All-on-4 clinical research. He'll review your CT scan, walk you through candidacy honestly, and give you a written cost estimate before you commit to anything.

Call (865) 397-5422 (Dandridge) or (865) 475-8331 (Jefferson City) to schedule. If you want to read more about the implant consultation process first, see What to Expect at Your First Dental Implant Consultation.