If you have lost most or all of the teeth in one jaw, your decision usually narrows to all-on-4 vs all-on-6 implants: a full arch of fixed teeth carried on either four or six titanium posts. Both can replace a complete upper or lower set in a single day of surgery, and both have strong long-term track records. The real question is simpler than “which is stronger.” It is which option matches your jawbone, your bite and your budget.
Here is the part most articles skip. More implants is not automatically the safer choice. In a five-year randomized controlled trial of 40 patients, one implant failed in the All-on-4 group and six failed in the All-on-6 group, and the difference was not statistically significant (Tallarico and colleagues, Clinical Implant Dentistry and Related Research, 2016). So the honest answer is rarely “just add more screws.” It is a planning decision your implantologist makes from a 3D scan of your bone.
At Imperial Smiles Dental and Implant Clinic in Sector 82, Gurgaon, that scan is where every full-mouth case begins. This guide covers what each option is, how they differ, what they cost in India, and who suits which.
What are all-on-4 dental implants?
All-on-4 is a full-arch restoration in which four dental implants support one fixed bridge of 10 to 14 teeth. The two front implants are placed straight; the two back implants are tilted at an angle. That tilt is the entire idea. It lets the surgeon anchor into denser bone toward the front of the jaw and, in most cases, avoid a bone graft.
The technique was developed by Dr Paulo Malo with Nobel Biocare, and All-on-4 is Nobel Biocare’s registered treatment concept. Because the angled rear implants steer clear of the sinus in the upper jaw and the nerve canal in the lower jaw, many people who were once told they lacked the bone for implants still qualify. Most patients leave the same day with a fixed set of temporary teeth.
What are all-on-6 dental implants?
All-on-6 uses six implants, commonly four straight and two tilted, to carry the same style of fixed full-arch bridge. The two additional posts spread the chewing load across more anchor points, which many clinicians prefer when a patient has generous bone volume or a heavy, grinding bite.
The trade-off is bone. Six implants generally need more of it than four. If the bone is not there, the surgeon may recommend a graft or a sinus lift first, which adds months and cost to treatment. All-on-6 comes up most often for the upper jaw, where the bone is naturally softer and some dentists want extra support.
All-on-4 vs all-on-6: the key differences
The table below sums up how the two full mouth implants approaches compare.
| Feature | All-on-4 | All-on-6 |
| Implants per arch | 4 (2 straight, 2 tilted) | 6 (commonly 4 straight, 2 tilted) |
| Bone needed | Works with limited bone, often avoids grafting | Usually needs more bone volume |
| Grafting or sinus lift | Frequently avoided | More likely if bone is thin |
| Load distribution | Shared across 4 points | Shared across 6 points |
| Relative cost | Lower (fewer implants) | Higher (more implants) |
| Best suited to | Moderate bone loss, budget-conscious cases, graft avoidance | Ample bone, heavy bite, larger arches |
| Same-day fixed teeth | Usually yes | Usually yes |
Does more implants mean a better result?
Not necessarily. The best head-to-head evidence we have, that five-year randomized trial, concluded both approaches were predictable for full-arch rehabilitation, with no statistically significant difference in implant survival and near-identical bone loss over five years (1.71 mm around the four-implant group versus 1.51 mm around the six-implant group).
This is why “which is better, all on 4 or 6” is usually the wrong way to frame it. Four well-placed, well-angled implants can carry a full arch reliably; six poorly planned ones will not rescue a bad plan. The data hint at a mild nuance: the six-implant design showed slightly steadier bone readings over time, while the four-implant design had marginally fewer implant failures but a few more minor mechanical adjustments. Neither gap was large. The sensible position, and the one most candid implantologists take, is to choose the number your bone and bite justify, not the bigger number for peace of mind.
How much do all-on-6 implants cost in India (and all-on-4)?
In India, all-on-4 typically ranges from roughly Rs 1.5 lakh to Rs 4 lakh per arch, while all-on-6 implants cost in India generally runs from about Rs 2.5 lakh to Rs 6 lakh or more per arch. Treat these as indicative market ranges, not a quote. Always confirm the exact figure with the clinic after an examination.
Price moves with real variables: the implant brand (a premium Swiss system costs more than a budget one), the final bridge material (acrylic is cheaper than zirconia), whether you need grafting or a sinus lift, the imaging and guided-surgery technology used, and the city you are treated in. A full-mouth case covering both arches is roughly double a single-arch price. Be cautious with quotes that sit far below these ranges, because the saving usually shows up later in the implant quality or the prosthetic. Ask exactly what is included: consultation, CBCT scan, surgery, temporary teeth, the final bridge, and follow-up visits.
Pros and cons of each
All-on-4 strengths: fewer implants, lower cost, grafting often avoided, faster overall treatment, and same-day teeth. Limitations: fewer anchor points mean the planning has to be exact, and it may be less ideal for the heaviest bites or the largest arches.
All-on-6 strengths: load shared across six posts, a common choice for the softer upper jaw and for strong biters, plus some redundancy if a single implant were ever to fail. Limitations: higher cost, more bone required, a greater chance of grafting, and slightly longer surgery.
Who is a candidate for which?
All-on-4 tends to suit patients with moderate bone loss who want to avoid grafting and control cost. All-on-6 tends to suit patients with good bone volume, a heavy or grinding bite, or an upper-jaw restoration. Candidacy, though, is settled on a scan, not on a rule of thumb.
Full mouth implants of either type call for reasonably controlled general health. The American Dental Association notes that your health matters more than your age when considering implants. Uncontrolled diabetes, heavy smoking and certain medications raise the risk of implant failure and are assessed before surgery is planned. Our approach to full-mouth dental implants in Gurgaon starts with imaging rather than assumptions: Dr Navneet Kumar, a Prosthodontist and Implantologist with 12 years of experience in full-mouth reconstructions, plans each case from a 3D CBCT scan that maps bone height and nerve position before a single implant is placed.
Recovery: what to expect
You usually walk out with fixed temporary teeth on the day of surgery. Stick to soft foods for the first few weeks to protect the healing implants while osseointegration, the fusion of implant to jawbone described by the NHS, takes hold over about three to six months. The permanent bridge is fitted after that. Mild swelling and soreness for a few days is normal, and most people return to desk work within two to three days. Long term, these teeth are brushed like natural ones, with extra care to clean beneath the bridge.
Medical disclaimer
This article is for general education only and is not a substitute for professional dental advice, diagnosis or treatment. Implant suitability, the number of implants needed, and the final cost can be determined only after a clinical examination and 3D imaging by a qualified dental surgeon. Always consult your dentist or implantologist about your specific situation.
Making the choice with confidence
If you remember one thing, let it be this: do not chase the bigger number. All-on-4 and All-on-6 are both proven, and the right pick is the one your jawbone and bite genuinely calls for, which is a decision that needs a scan rather than a sales pitch. Book a full-mouth implant consultation with the implant team at Imperial Smiles Dental and Implant Clinic, Sector 82, Gurgaon. We will scan your jaw, explain your real options, and give you an honest, itemised cost. Call or WhatsApp +91 98101 72415 to begin.
FAQs
Which is better, all on 4 or 6 implants?
Neither wins outright. A five-year trial found no statistically significant survival difference between them. The better choice is whichever your bone volume, bite and budget support, decided from a 3D scan.
Is all-on-4 strong enough for full mouth implants?
Yes, for most patients. Four angled implants are engineered to carry a full arch, and long-term studies report high survival, including All-on-4 cases followed for up to 10 years.
How long do all-on-4 or all-on-6 implants last?
With good hygiene and regular check-ups, the implants themselves can last many years, with published follow-ups extending to a decade and beyond. The visible bridge may need servicing or replacement sooner than the implants.
Do I need a bone graft?
Often not with All-on-4, which is designed to use the bone you already have. All-on-6 is more likely to need grafting if your bone is thin. Only a scan can confirm it.
How much do all-on-6 implants cost in India?
Broadly Rs 2.5 lakh to Rs 6 lakh or more per arch, depending on implant brand, bridge material and any grafting. Confirm your exact cost with the clinic.
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