All-on-4 Dental Implants: Complete Guide for Bay Area Patients

Reviewed by Dr. Na Zhao, DDS, PhD — Harvard School of Dental Medicine · UCSF School of Dentistry · Last reviewed April 2026

Direct Answer

All-on-4 dental implants place four titanium posts at strategic angles in the jaw to support a fixed, non-removable full-arch prosthesis. In the Bay Area, All-on-4 costs range from $24,000 to $32,000 per arch at Dr. Na Dental, and the entire process — from first consultation to final teeth — typically takes three to six months.

All-on-4 vs. Other Full-Arch Solutions

Option	Implants Needed	Removable?	Cost per Arch (Bay Area)	Bone Graft Usually Required?
All-on-4	4	No	$24,000 – $32,000	Rarely
All-on-6	6	No	$28,000 – $38,000	Sometimes
Implant-Supported Overdenture	2–4	Yes (snaps on/off)	$10,000 – $18,000	Sometimes
Traditional Full Denture	0	Yes	$1,500 – $4,000	No

All-on-4 stands out because the two posterior implants are angled at 30–45 degrees, allowing them to engage denser bone in the front of the jaw. This design often eliminates the need for bone grafting that a conventional six-implant approach would require.

How All-on-4 Works: Step-by-Step

Step 1 — 3D Cone-Beam CT Scan and AI Planning

Dr. Na uses a cone-beam CT (CBCT) scan to create a three-dimensional map of your jaw, bone density, and nerve positions. At Dr. Na Dental, AI-assisted software analyzes this data to calculate the safest implant angles before any incision is made. This pre-surgical planning is the same protocol Dr. Na studied at Harvard School of Dental Medicine.

Step 2 — Extractions (Same Day, If Needed)

Any remaining failing teeth are removed on surgery day under local anesthesia with optional sedation.

Step 3 — Implant Placement

Four titanium implants are placed: two straight in the front of the jaw, two angled toward the back. The angled placement avoids the sinus cavities (upper jaw) or the inferior alveolar nerve (lower jaw).

Step 4 — Provisional Bridge (Same Day)

A temporary acrylic fixed bridge is screwed onto the implants before you leave the clinic. You leave with a full set of teeth — not a denture.

Step 5 — Osseointegration (3–5 Months)

Your bone fuses to the titanium surface. You eat soft foods, maintain meticulous hygiene, and attend follow-up appointments every 4–6 weeks.

Step 6 — Final Prosthesis

Once integration is confirmed with an updated X-ray, the permanent zirconia bridge is fabricated and seated. Zirconia is preferred for its strength, biocompatibility, and natural translucency.

Who Is a Good Candidate?

All-on-4 is designed for patients who are:

• Missing all or most teeth in one or both arches
• Currently wearing full dentures and dissatisfied with fit or function
• Dealing with severe decay, gum disease, or failing teeth that require full extraction
• Diagnosed with adequate bone volume in the anterior jaw (most patients qualify — the angled design accommodates lower bone density than traditional implant protocols)

You may need a modified approach if you:

• Are an uncontrolled diabetic or heavy smoker (both reduce healing rates; controlled patients can still qualify)
• Have severe bone loss in the anterior region (a sinus lift or bone graft may be required, adding 3–6 months)
• Are under age 18 (jaw growth must be complete)

In our practice, we find that the majority of patients who initially believe they "don't have enough bone" are actually good candidates once CBCT imaging is reviewed — the angled implant design was specifically engineered for this situation.

All-on-4 Recovery Timeline

Timeframe	What to Expect
Day of surgery	Provisional bridge placed; soreness and swelling begin
Days 1–3	Peak swelling; soft diet (yogurt, eggs, smoothies, pasta)
Week 1–2	Swelling subsides; soreness manageable with OTC analgesics
Weeks 2–8	Soft diet continues; osseointegration progressing
Months 2–5	Follow-up X-rays; gradual return to normal diet
Month 5–6	Final zirconia bridge fabricated and placed

Most of our Bay Area patients — many of whom are working professionals — return to desk work within three to five days.

All-on-4 Cost at Dr. Na Dental

At Dr. Na Dental (San Mateo, CA), All-on-4 per arch is priced as follows:

What's Included	Cost
CBCT scan + AI treatment planning	Included
All four implants (Straumann or Nobel Biocare)	Included
Provisional fixed bridge (same day)	Included
Final zirconia full-arch bridge	Included
Post-surgical follow-up visits	Included
Total per arch	$24,000 – $32,000
Both arches	$44,000 – $58,000

Bone grafting or sinus lifts, if required, are quoted separately: $400–$1,500 per site for grafting; $1,500–$3,000 per side for sinus lifts.

Insurance and Financing

Most dental PPO plans (Delta Dental, MetLife, Cigna, Aetna) do not cover implants as a standard benefit, but many Bay Area tech-employer plans offer partial implant coverage. Dr. Na Dental offers 0% interest financing through CareCredit and in-house payment plans. HSA and FSA funds are accepted.

Why Choose Dr. Na Dental for All-on-4?

Dr. Na Zhao holds a DDS from Harvard School of Dental Medicine and a PhD in Prosthodontics from Peking University, with clinical training at UCSF School of Dentistry. She incorporates AI-assisted surgical planning — the same technology that reduces implant placement error to sub-millimeter precision, as documented in peer-reviewed literature (Tahmaseb et al., Clinical Oral Implants Research, 2018). Dr. Na Dental serves San Mateo, Foster City, Burlingame, Palo Alto, Mountain View, and all Peninsula cities.

FAQs

How long does All-on-4 surgery take?

The surgical day — including extractions, implant placement, and provisional bridge — typically takes four to six hours. You arrive in the morning and leave in the afternoon with a fixed set of teeth.

Is All-on-4 painful?

Surgery is performed under local anesthesia; oral conscious sedation is available for anxious patients. Most patients describe post-surgical discomfort as moderate and well-controlled with prescription anti-inflammatories for the first three to five days.

How long do All-on-4 implants last?

The titanium implants themselves are designed to last a lifetime. The zirconia bridge typically lasts 15–20 years before needing replacement, depending on oral hygiene and bite habits. The 10-year survival rate for All-on-4 implants in peer-reviewed studies exceeds 94% (Malo et al., Journal of Oral and Maxillofacial Surgery, 2019).

Can I eat normally with All-on-4?

After osseointegration is complete (around month five to six), patients can eat most foods. Very hard items like ice or hard candy should be avoided to protect the prosthesis long-term.

What is the difference between All-on-4 and All-on-6?

All-on-6 places two additional implants for broader load distribution and may offer a slight longevity advantage in high-force biting cases. However, All-on-6 generally requires more bone volume and costs $4,000–$8,000 more per arch. Dr. Na recommends the right option based on your individual CBCT scan and bite forces.

Does All-on-4 require bone grafting?

In most cases, no. The angled posterior implants are specifically designed to use available bone and avoid the need for grafting — one of All-on-4's primary advantages over conventional full-arch protocols. Approximately 20–30% of patients have localized defects that require minor grafting.

References

1. Malo, P., et al. "All-on-4 treatment concept with Nobel Biocare implants." Journal of Oral and Maxillofacial Surgery, 2019.
2. Tahmaseb, A., et al. "The accuracy of static computer-aided implant surgery." Clinical Oral Implants Research, 2018. https://doi.org/10.1111/clr.13346
3. American Academy of Implant Dentistry (AAID). "Implant information." https://www.aaid-implant.org
4. American Dental Association (ADA). "Dental implants." https://www.ada.org/en/member-center/oral-health-topics/dental-implants

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Ready to find out if All-on-4 is right for you? Schedule a free consultation at Dr. Na Dental, 675 Mariners Island Blvd #104, San Mateo, CA 94404. Serving Foster City, Burlingame, Palo Alto, Mountain View, and all Bay Area Peninsula communities.