When you have lost most or all of your natural teeth, the options can feel overwhelming. Dentures slip and shift. Traditional implants require multiple surgeries over many months. All-on-4 implants offer a different path: a complete arch of replacement teeth supported by just four strategically positioned implants, often delivered in a single day. For patients who have been told they need extensive dental work or a full arch replacement, this approach changes what is possible.
At Seattle Smiles Company, Dr. Ajay Kashi and our team have helped patients in downtown Seattle regain full, functional smiles through restorative dentistry solutions designed for complex cases. We combine advanced 3D imaging, in-house surgical capabilities, and comprehensive sedation options to make full-arch restoration as comfortable and predictable as possible. Free consultations and free 3D CT evaluations are available for all new patients.
What Makes All-on-4 Different from Traditional Implants
All-on-4 is a full-arch tooth replacement technique that uses four precisely angled implants to support an entire set of fixed replacement teeth. Unlike conventional approaches that may require six to eight implants per arch, the All-on-4 concept works with your existing bone in most cases, reducing or eliminating the need for bone grafting.
The two front implants are placed vertically in areas of denser bone, while the two rear implants are angled at 45 degrees to maximize contact with available bone and avoid critical anatomical structures like sinuses and nerves. This engineering allows the full load of a fixed arch to be distributed across four implants with exceptional stability.
A long-term study published in the Journal of the American Dental Association, following 245 patients over 10 years, found All-on-4 prostheses achieved a 99.2% survival rate, confirming the technique’s reliability for permanent full-arch restoration.
Benefits of All-on-4 Treatment
All-on-4 implants address the most significant limitations of traditional dentures while offering advantages over more complex implant protocols.
- Fixed, non-removable teeth. Your restoration is anchored to implants, eliminating the slipping and shifting that makes dentures frustrating for eating, speaking, and day-to-day confidence.
- Same-day temporary teeth. Many patients leave surgery with a functional set of teeth placed the same day implants are positioned.
- Reduced or no bone grafting. The angled implant design works with most existing bone structures, streamlining your treatment timeline and reducing overall costs.
- Bone preservation. Implants stimulate the jawbone the way natural tooth roots do, preventing the bone loss and facial changes that develop with dentures over time.
- Long-term durability. With proper care, All-on-4 restorations are built to last for many years.
These advantages make All-on-4 one of the most effective paths available to patients who need a full arch replaced and want a permanent, low-maintenance result.
The All-on-4 Process at Seattle Smiles Company
Your treatment follows a clear, predictable sequence. Here is what to expect from consultation through final restoration.
Understanding Costs and Financing Options
All-on-4 treatment typically ranges from $20,000 to $30,000 per arch, depending on the materials used for your final restoration and any preparatory procedures. We accept PPO dental insurance plans and help maximize your benefits for implant procedures.
Beyond insurance, we offer financing through Cherry, Alphaeon Credit, Proceed Finance, Scratch Pay, and CareCredit. Our in-house payment plan requires no credit check and allows us to build monthly payments around your budget, so cost is not a barrier to the care you need. We also offer a membership plan that covers ongoing implant maintenance. During your free consultation, we will provide a detailed cost breakdown and walk you through every available option.
Who Is a Good Candidate for All-on-4 Implants?
All-on-4 works well for patients who are missing most or all of their teeth in one or both arches, have severely damaged teeth requiring full extraction, or currently wear dentures and want a stable, permanent alternative. Good candidates have adequate bone density in the front jaw regions and maintain good general health.
Certain conditions, such as uncontrolled diabetes or active gum disease, need to be managed before treatment. Smoking can affect healing, so we discuss this during the consultation. Age is rarely a limiting factor. Dr. Kashi works with patients from their twenties to their eighties, with treatment plans tailored to each person’s bone quality and overall health.
All-on-4 vs. Traditional Dentures and Other Implant Options
Understanding how All-on-4 compares to the alternatives helps patients make a confident decision. Here is a direct comparison of the most common full-arch solutions.
You may also want to review All-on-X implants, which use additional implants for patients with specific anatomical needs or those wanting maximum support. Individual dental implants remain the best solution for replacing one or a few missing teeth. Dr. Kashi will recommend the approach that fits your bone structure and goals at your free consultation.
Frequently Asked Questions About All-on-4 Implants
Here are answers to the questions patients ask most often before their first consultation.
How long do All-on-4 implants last?
With proper care, All-on-4 implants are designed to last for many years. The implants themselves, once fully integrated with your jawbone, can last a lifetime in many cases. The prosthetic arch may require maintenance or replacement over the decades, depending on the materials used and how well the restoration is cared for. Regular cleanings and follow-up visits at Seattle Smiles Company support long-term success.
Am I a candidate if I have been told I need bone grafting?
Many patients told they need bone grafting for traditional implants can avoid it with the All-on-4 technique. The angled rear implants are specifically designed to work with available bone in areas where density is typically preserved even after tooth loss. A free 3D CT evaluation gives Dr. Kashi an accurate picture of your bone and allows him to determine the best path for your specific anatomy.
Is All-on-4 surgery painful?
The procedure is performed under sedation, so most patients report little to no discomfort during surgery. We offer multiple sedation levels, including IV sedation and general anesthesia administered by certified registered nurse anesthetists. Post-operative discomfort is typically managed well with prescribed medications, and most patients are surprised by how manageable the recovery is.
What is the difference between All-on-4 and All-on-X?
All-on-4 uses exactly four implants to support a full arch, making it effective for most patients without requiring bone grafting. All-on-X uses five to eight implants and is recommended for patients with specific anatomical considerations or those who want additional support. Dr. Kashi will assess which approach is better suited to your bone structure and goals during your consultation.
How do I care for All-on-4 implants?
All-on-4 restorations are cared for similarly to natural teeth. Brush twice daily, floss or use interdental brushes around the implant connection points, and attend regular professional cleanings. Unlike dentures, there are no soaking solutions or adhesives required. We provide detailed aftercare instructions and ongoing support through our practice and membership plan.
Schedule Your All-on-4 Consultation at Seattle Smiles Company
Seattle Smiles Company brings together advanced 3D imaging, in-office surgical capabilities, and a full range of sedation options at our downtown Seattle location. We serve patients from Capitol Hill, First Hill, the Central District, Madison Park, and surrounding neighborhoods, with convenient access and wheelchair-accessible facilities. Dr. Kashi and our team understand that full-arch restoration is a major decision, and we guide every patient through the process from the first consultation through long-term aftercare.
We offer free consultations, free 3D CT evaluations, flexible financing options, and 24/7 emergency support. Contact us today to schedule your consultation and learn exactly what All-on-4 implants can do for your smile and quality of life.
206-814-0800