All-on-Six is like All-on-Four's bigger, stronger sibling. Instead of using four implants to support your full mouth of teeth, All-on-Six uses six. This might not sound like a huge difference, but it makes a meaningful impact on longevity and how well your teeth hold up over time. All-on-Six is especially good for younger patients, people who chew very hard, and anyone who wants their teeth to last as long as possible with minimal complications.

Why Six Implants Are Better Than Four

Key Takeaway: All-on-Six is like All-on-Four's bigger, stronger sibling. Instead of using four implants to support your full mouth of teeth, All-on-Six uses six. This might not sound like a huge difference, but it makes a meaningful impact on longevity and how...

Think of your four or six implants as support posts. When you bite down, the force travels through your teeth and framework and gets distributed to these posts. With four posts, each one has to handle more stress. With six posts, that same stress gets split between more supports, so each implant bears less weight.

Here's the math: if you bite down with 200 pounds of force on a back tooth with All-on-Four, each implant averages 50-70 pounds of stress. With All-on-Six, that same force spreads to six implants, so each one averages only 35-45 pounds. That's about 35-40% less stress per implant. Studies show this difference matters—six-implant cases have less bone shrinkage around the implants (0.3-0.4mm per year instead of 0.5-0.8mm), which means your implants stay healthier and stronger longer.

Plus, All-on-Six lets your dentist place implants farther back in your jaw, which means your back teeth don't stick out as far. With four implants, your back teeth might extend 12-15mm. With six, they might only extend 8-10mm or sometimes not even extend back past the last implant. Less extension means less stress on the implants, kind of like shortening a diving board so it doesn't wobble as much.

How Your Six Implants Are Positioned

Your dentist carefully places six implants in specific locations to give you the best function and longevity. Here's where they go:

In the front of your mouth, you'll have 2-3 implants positioned straight up and down in the front tooth area. These form the foundation for your front teeth and handle moderate chewing forces.

In the middle (premolar area), you'll have implants that are slightly tilted. They're tilted just a little (about 15-25 degrees) to avoid hitting the nerve that runs through your jaw. This middle placement helps move the support system farther back in your mouth.

In the back (molar area), you'll have the final 2 implants, positioned and tilted more aggressively (up to 30-35 degrees) to reach as far back as possible. This back placement is key to reducing how far your back teeth stick out. Your dentist carefully avoids the sinuses (in the upper jaw) and major nerves (in the lower jaw) when placing these.

The result is that your implants span a longer distance (about 40-45mm from front to back with six implants, compared to 28-35mm with four). Even though this longer distance could create more stress, the fact that your teeth don't extend as far back makes up for it, and you end up with better overall balance of forces.

Comparing All-on-Six with All-on-Four: The Real Results

Research comparing these two approaches shows measurable differences that matter in the long run. After 5 years, patients with All-on-Six have less bone loss around their implants—only 1.5-2.0mm compared to 2.5-3.5mm with All-on-Four. That extra 1-1.5mm of bone preservation might not sound like much, but it keeps implants stronger and healthier for longer.

Both approaches are very successful, but All-on-Six has a slight edge: about 95-98% of All-on-Four implants survive 5 years, while 97-99% of All-on-Six implants survive. More importantly, All-on-Six has built-in insurance—if one implant somehow fails, you still have five implants supporting your teeth, and your restoration can usually be repaired. With All-on-Four, if one implant fails, the entire restoration becomes complicated to repair.

Problems like loose screws happen more often with All-on-Four (2-5% per year) than All-on-Six (1-3% per year). After 10 years, most people still have their original All-on-Six teeth without major repairs (88-92% success), while All-on-Four patients more often need adjustments (80-85% success). Patient satisfaction is very high with both, though people with All-on-Six report being slightly happier overall.

Is All-on-Four or All-on-Six Right for You?

Choose All-on-Four when: you have enough bone in the front of your jaw (at least 25mm depth), you have height limitations (limited space from jaw to roof of mouth), your budget is limited (All-on-Four is cheaper), your appointment time is restricted, or your bone in the back of your jaw is very thin. All-on-Four works great in these situations and will serve you well for many years.

Choose All-on-Six when: you have good bone volume in the back of your jaw (which most people do), you're younger and want teeth that will last your whole life, you grind your teeth or chew very hard, you have the budget for the extra implant ($3,000-6,000 more), your dentist sees a complicated bite pattern that needs extra support, or you're having problems with a previous All-on-Four restoration. For younger patients, All-on-Six is often worth the extra investment because those extra years of strong function and stability really add up.

The Surgery: What to Know About the Procedure

All-on-Six surgery takes longer than All-on-Four. You're looking at about 120-160 minutes (2-2.5 hours) instead of 90-120 minutes. This extra time also means slightly more bleeding (maybe 50-100 mL extra) and a bit longer time under anesthesia if you're getting sedation. If you can't sit still for 2+ hours, or if longer anesthesia concerns you, this is something to discuss with your surgeon.

Sometimes, if you don't have enough bone in the back of your jaw, your dentist might suggest a small bone graft to build it up. This happens in about 40-50% of All-on-Six cases, compared to 10-15% of All-on-Four cases. A bone graft is usually no big deal—it's just building up the area where the implants need to go. It adds about 4-6 months to your timeline because the graft needs to heal before implants can be placed.

Your back implants sit pretty close to important nerves in your jaw. Your surgeon uses 3D imaging (cone-beam CT—basically a special X-ray) to map out exactly where those nerves are and plan the implant placement carefully to avoid them. Nerve injury is very rare (less than 0.5%) when your surgeon plans carefully, so this isn't something to lose sleep over.

Keeping Your Teeth Healthy: Daily and Professional Care

The good news? Maintenance for All-on-Six is pretty much identical to All-on-Four. You'll still do daily cleaning with interdental brushes (not regular floss), and you'll still come in for professional cleanings every 3 months. The extra two implants don't change what you need to do.

Daily care: spend a few minutes cleaning under and around your teeth with interdental brushes (size 4-5), water irrigation if you have one, and keep everything clean and healthy.

Professional visits every 3 months: your dentist checks for any gum inflammation (pockets should be less than 3mm), makes sure all implants are solid and not loose, and takes X-rays to monitor bone levels. If your teeth are screw-retained, your dentist might check the screw tightness every 12-18 months, but usually only if you mention any problems. Routine tightening without symptoms isn't necessary.

Cost: Is All-on-Six Worth the Extra Money?

All-on-Six costs about $2,500-5,000 more than All-on-Four. That breaks down to: the extra implant itself ($1,200-2,000), slightly longer surgery time ($500-1,500), and a small increase in the prosthetic cost ($800-1,500).

What do you get for that extra money? Several real benefits: your implants experience less stress (imagine six workers sharing the load instead of four), which means your bones stay healthier longer and you might go 2-3 extra years before needing major repairs. Most importantly, if one implant somehow fails, you can usually repair it for $3,000-6,000 instead of replacing your entire $15,000-25,000 restoration. Plus, your teeth should last 5+ extra years before needing major work.

Your dentist might explain it like this: "For a few thousand dollars more, you get implants that work less hard, insurance against single implant failure, and teeth that keep functioning great for many more years. For younger patients or anyone who chews very forcefully, this extra investment typically pays for itself in the long run."

Your surgeon might use one of two major systems: Nobel Biocare or Straumann. Both work extremely well (95-98% implant success), and both have their own advantages.

Nobel Biocare is known for being very aggressive with tilting implants (up to 45 degrees) to fit into tight spaces and minimize how far back your teeth stick out. This approach is great if you have limited bone in the back of your jaw. The prosthetic framework is custom-designed and milled by computer for a perfect fit.

Straumann takes a more conservative approach, tilting implants only 20-30 degrees and using cobalt-chromium or titanium bars. This approach is gentler on the bone interface and requires less tilting, which means you should have decent bone volume in the molar region.

For most people with reasonable bone in the back of your jaw, both systems give essentially the same results. Your surgeon will recommend whichever system they're most experienced with and which fits your anatomy best. Either way, you're getting a proven approach with excellent long-term success.

Deciding Between Four and Six: The Questions to Ask

Your surgeon will consider several things when deciding which approach is best for you:

How much bone do you have in the back of your jaw? If it's pretty thin (less than 6mm vertical or 8mm front-to-back), All-on-Four might be better unless you're willing to get a bone graft first.

How old are you? If you're under 55, All-on-Six makes more sense because those extra implants will pay off over the many years ahead of you.

How hard do you chew? If you grind your teeth at night or chew very forcefully, the extra support from six implants is beneficial.

What's your budget? If you can swing an extra $3,000-5,000, All-on-Six is usually worth it. If your budget is tight, All-on-Four will still serve you very well.

Does your surgeon have experience? Some surgeons are more experienced with tilted implants and complex six-implant cases. Your surgeon will recommend what they do best and what they think is best for your situation.

The Bottom Line: All-on-Six for Maximum Longevity

All-on-Six represents the next step forward in full-mouth tooth replacement, with real advantages: less bone loss, fewer complications, better long-term retention of your original teeth, and insurance against implant failure. All-on-Four is still an excellent choice for people with limited bone in the back or tight budgets, but All-on-Six is becoming the standard recommendation for anyone who wants the best long-term outcome—especially younger patients and heavy chewers.

The surgery is a bit more complex and longer, and the cost is somewhat higher (about 8-12% more), but the benefits add up over time. Better bone preservation, fewer repairs, longer tooth life, and built-in redundancy (if one implant fails, you can still function well) make the extra investment worthwhile for most people who can afford it. Modern surgical planning has made six-implant placement routine and safe. If you're serious about having teeth you typically don't need to think about again, All-on-Six is the gold standard.

Always consult your dentist to determine the best approach for your individual situation.

Related reading: Oral Surgical Complications: Classification, Timeline and Risk and Concerns with Recovery Timeline.

Conclusion

Talk to your dentist about your specific situation and what approach works best for you. The surgery is a bit more complex and longer, and the cost is somewhat higher (about 8-12% more), but the benefits add up over time. Better bone preservation, fewer repairs, longer tooth life, and built-in redundancy (if one implant fails, you can still function well) make the extra investment worthwhile for most people who can afford it. Modern surgical planning has made six-implant placement routine and safe.

> Key Takeaway: All-on-Six is like All-on-Four's bigger, stronger sibling. Instead of using four implants to support your full mouth of teeth, All-on-Six uses six.