Last updated 09.25.2025
Full-arch options: 2, 4, or 6 implants, what's the difference?
How 2, 4, and 6-implant approaches differ—when each is used, and what recovery and maintenance typically involve.
Learn more about Dr. Elhaine Beato
Choosing dental implants to replace a full arch of missing or failing teeth is a life-changing decision. But if you’re early in your research, you may have encountered confusing terms: All-on-4®, All-on-6, implant-retained overdentures, and more. What do they all mean, and how do they compare?
This guide walks through the different full-arch options based on the number of implants used, when each approach is typically recommended, and what you can expect in terms of treatment steps, recovery, and long-term care.
First things first: What do these terms mean?
"All-on-4" and full-arch fixed treatment
"All-on-4®" is a commonly used term for full-arch fixed implant treatment, where a full set of teeth is supported by four dental implants. At ClearChoice, we use the more general term "full-arch treatment" to describe this approach, whether it involves four, five, or six implants. These prostheses are fixed in place and not removed by the patient.
Overdentures
Overdentures use two implants to support a removable denture. The denture "snaps on" to the implants for added security during daily use but is taken out for cleaning. This is sometimes called an implant-retained denture.
Aesthetics and design options
Some full-arch prostheses include a pink acrylic or ceramic base designed to replicate the appearance of natural gums. Your care team will determine the right design based on your bone level, smile line, and personal goals.
Why 4 vs 6 implants is a clinical decision
The decision to use four or six implants depends on several clinical factors, including bone volume, the forces your bite generates, and the design of the final prosthesis.
For a step-by-step overview, see our dental implants procedure explained.
How the options differ
Implant-supported dentures (Two implants)
For this approach, two implants are placed in the lower jaw to stabilize a removable denture. The denture connects via attachments (often ball or bar style). After healing, patients can snap the denture on and off as needed.
Learn how your provider plans dental implant surgery for stability and comfort.
Fixed full-arch implant treatment (Often 4 or 6 implants)
This method uses four or more implants to support a non-removable prosthesis. Implants are placed strategically in the jaw to anchor a full arch of new teeth.
Immediate-load vs. delayed-load
Some patients receive a set of temporary (provisional) teeth on the same day as implant placement. Others may require a healing period before receiving their initial prosthesis.
Who is eligible?
Factors your doctor evaluates
Before recommending treatment, your provider will assess:
Bone volume and quality
Gum and tissue health
Bite alignment and jaw forces
Medical history and current medications
Why implant count isn't a menu choice
The number of implants is not something you select in advance. It’s determined by diagnostics, anatomy, and the prosthetic plan.
Recovery and maintenance
Pain and recovery basics
Most patients experience 3–5 days of manageable discomfort after full-arch implant surgery. Your provider will explain what to expect and how to manage recovery at home.
Healing continues over several months as the implants integrate with your jawbone. For the biology behind this phase, see what is osseointegration.
Longevity and factors that influence outcomes
Dental implants are designed for long-term use, but success depends on factors like:
Health conditions (e.g., diabetes)
Smoking or medications
Consistent follow-up visits
Cleaning routines: Fixed vs. overdentures
Fixed full-arch prostheses: Brushed and cleaned using tools like a water flosser, soft brush, and interdental picks
Overdentures: Removed daily and cleaned like a traditional denture
For daily routines and check-ins, see dental implant aftercare tips.
Costs and planning basics
What's included in a coordinated plan
ClearChoice offers an all-in-one approach that typically includes:
3D diagnostics and CBCT imaging
Surgical placement and componentry
Temporary (provisional) teeth, if indicated
Final prosthesis
Post-op follow-ups and support
For a pricing overview and what’s included, see how much do dental implants cost.
Financing and insurance
ClearChoice Dental Implant Centers offer third-party financing options that may help make payments more manageable. While ClearChoice does not accept insurance payments, patients receive a single, all-inclusive bill that they may use to file a claim with their provider for potential reimbursement.
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Full-arch options FAQs
Are 4 or 6 implants "better"?
Neither is "better" universally. Your doctor will recommend the right number based on your unique anatomy and treatment plan.
Can two implants hold a full denture?
Yes, in the form of an overdenture. The denture is removable and attaches to the implants via specialized connectors.
How long do implants last?
Dental implants are a long-term solution, but their success depends on proper care and maintenance.
What factors affect long-term success?
Key influences include bone health, oral hygiene, follow-up visits, and lifestyle factors like smoking.
Can you tell if someone has full-arch implants?
In many cases, no. Full-arch prostheses are custom-designed for your smile and can include natural-looking gums and teeth.
