What Are All-on-4 Dental Implants? A Plain-Language Explanation
All-on-4 dental implants — also known as "Teeth in a Day" or "Same Day Teeth" — is a full-arch tooth replacement technique that uses just four strategically positioned implants to permanently support a complete fixed bridge of teeth. Developed and clinically refined by Nobel Biocare over more than two decades, All-on-4 has transformed full-mouth rehabilitation by making it faster, less invasive, and accessible to patients who previously could not receive conventional implants.
Unlike removable dentures, an All-on-4 bridge is permanently fixed. It does not slip, click, require adhesive, or restrict your diet. Patients eat steak, bite into apples, and laugh freely — with the confidence of teeth that behave exactly like their natural counterparts.
At PRAXIS Dental Mumbai, Dr Varun Malhotra — a Nobel Biocare trained implantologist — has performed full-arch implant reconstructions for patients across Mumbai, India, and internationally, including patients who had previously been told they were not implant candidates.
Why Can Four Implants Support an Entire Arch of Teeth?
This is the question most patients ask first — and it is the engineering principle that makes All-on-4 so clinically elegant.
In a standard All-on-4 configuration, two implants are placed vertically at the front of the jaw, and two are placed posteriorly at up to 45° angles. This angulation is key: it allows the posterior implants to utilise the denser, more voluminous bone at the front of the jaw — the same bone that often remains intact even when the back of the jaw has experienced significant resorption.
The angled placement also increases the anteroposterior spread of the implant base, which distributes bite forces more evenly across the entire arch — allowing four implants to provide the mechanical stability that previously required six, eight, or more. This is why many patients with moderate bone loss who are not candidates for conventional implants can still receive All-on-4 without bone grafting.
All-on-4 vs Conventional Dentures: The Critical Differences
| Factor | All-on-4 Fixed Implant Bridge | Conventional Removable Denture |
|---|---|---|
| Fixed or removable | ✅ Permanently fixed — cannot be removed | ❌ Removable — must be taken out nightly |
| Jawbone preservation | ✅ Yes — implants stimulate bone | ❌ No — bone loss accelerates under denture |
| Bite force | ✅ ~80–90% of natural teeth | ❌ ~20–25% of natural teeth |
| Stability | ✅ No slipping, clicking or shifting | ❌ Slippage common, especially in lower jaw |
| Diet restrictions | ✅ None after healing — eat normally | ❌ Hard, sticky, and chewy foods restricted |
| Speech | ✅ Natural — no lisping or adjustment period | ⚠️ Adaptation period common |
| Facial structure | ✅ Maintains facial volume and jaw shape | ❌ Bone loss causes facial collapse over time |
| Longevity | ✅ Implants: 20–40+ years | ⚠️ 5–8 years before relining or replacement |
| Upfront cost (Mumbai) | ⚠️ Higher — ₹2.5L–₹5L per arch | ✅ Lower upfront |
All-on-4 vs All-on-6 vs All-on-8: Which Is Right for You?
The number of implants used in a full-arch reconstruction depends on your available bone volume, bite forces, arch width, and clinical goals. Here is how the three main protocols differ:
All-on-4 — Four Implants Per Arch
The most widely used full-arch protocol. Two vertical anterior implants and two posteriorly angled implants. Ideal for patients with moderate bone volume, those who want to avoid bone grafting, and patients seeking the most efficient route to a full fixed smile. Extensively documented — Nobel Biocare's All-on-4 has 20+ years of published clinical evidence with success rates exceeding 95%.
All-on-6 — Six Implants Per Arch
Adds two additional implants for greater load distribution and stability. Preferred when bone volume is sufficient and the patient wants maximum support, has heavier-than-average bite forces, or requires a wider arch span. All-on-6 also provides redundancy — if one implant ever fails, the arch retains structural integrity.
All-on-8 — Eight Implants Per Arch
Used in full-mouth rehabilitation cases requiring the highest level of support — typically patients with very large arches, heavy bruxism (grinding), or complex occlusal requirements. Provides the most stable foundation and the closest biomechanical approximation to natural dentition.
At PRAXIS Dental, the implant protocol is determined after a 3D CBCT scan and comprehensive clinical assessment — not by a predetermined price point. We will recommend the configuration that is genuinely optimal for your anatomy and long-term outcome.
Who Is a Good Candidate for All-on-4 in Mumbai?
All-on-4 is suitable for a broad range of patients. The following groups are typically the strongest candidates:
- Patients who are fully edentulous (missing all teeth in one or both arches)
- Those with multiple failing teeth requiring extraction — All-on-4 allows immediate replacement on the day of extractions
- Patients dissatisfied with removable dentures — particularly lower denture instability, which is among the most common complaints in dentistry
- Those who cannot tolerate removable appliances due to a strong gag reflex
- Patients with moderate bone loss who want to avoid the additional time and cost of bone grafting
- International and outstation patients who want complete treatment in fewer visits — All-on-4 is frequently chosen by dental tourism patients for this reason
Who May Not Be an Immediate Candidate
All-on-4 requires adequate anterior bone volume. Patients with severe generalised bone resorption may require bone grafting before implant placement. Uncontrolled systemic conditions — including uncontrolled diabetes, active cancer treatment, or severe osteoporosis — are contraindications that must be addressed before proceeding. Heavy smokers have significantly reduced success rates and will be advised accordingly.
All-on-4 Cost in Mumbai: What to Expect
The cost of All-on-4 in Mumbai at PRAXIS Dental includes surgical placement, temporary bridge, final permanent bridge, and all associated appointments. Indicative costs:
- All-on-4 per arch (zirconia bridge, Nobel Biocare implants): ₹2,50,000 – ₹4,50,000
- All-on-6 per arch: ₹3,50,000 – ₹5,50,000
- Full-mouth (both arches): ₹5,00,000 – ₹10,00,000
- Extractions (if required): Additional cost per tooth
- Bone grafting (if required): Additional — assessed after CBCT scan
Financing options are available to spread the cost. A precise, itemised estimate is provided after your CBCT scan consultation — never before, because accurate All-on-4 pricing without a clinical assessment is not clinically responsible.
"All-on-4 is one of the most life-changing procedures we perform. Patients arrive with loose dentures, failing teeth, or no teeth at all — and leave the clinic the same day with a fixed, beautiful smile. I have seen it change people's entire relationship with food, conversation, and confidence."
— Dr Varun Malhotra, Nobel Biocare Trained Implantologist, PRAXIS Dental Mumbai
The All-on-4 Process at PRAXIS Dental Mumbai: Step by Step
Step 1 — Consultation & 3D CBCT Scan
Every All-on-4 case at PRAXIS begins with a 3D CBCT (cone beam computed tomography) scan — not a standard 2D X-ray. This provides precise measurements of bone volume and density, nerve canal positions, sinus anatomy, and existing root positions. Using this data, Dr Varun Malhotra virtually plans the exact implant positions before surgery begins — minimising risk and maximising precision.
Step 2 — Extractions & Implant Placement (Same Day)
Any remaining failing teeth are extracted and the four implants are placed in a single surgical session under local anaesthesia or IV sedation. The entire procedure typically takes 2–4 hours per arch. Most patients report the experience is more comfortable than anticipated. A temporary fixed bridge is attached to the implants on the same day — you leave with a full set of functioning teeth.
Step 3 — Osseointegration & Healing (3–6 Months)
The implants gradually bond with the surrounding jawbone through osseointegration. During this period, you wear the temporary fixed bridge — eating, speaking, and smiling normally, with some dietary modifications (avoiding very hard foods for the first 3 months). Follow-up appointments at PRAXIS monitor healing progress and temporary bridge fit.
Step 4 — Final Bridge Delivery
Once osseointegration is confirmed (typically at 3–6 months), your permanent, custom-fabricated zirconia or hybrid ceramic bridge is attached. Bite alignment, aesthetics, and phonetics are checked and fine-tuned. You receive a comprehensive aftercare protocol including professional cleaning schedules, dietary guidance, and a long-term maintenance plan.
All-on-4 Success Rates: What the Clinical Evidence Shows
All-on-4 is among the most extensively documented procedures in modern implant dentistry. Key published findings:
- 95–98% implant survival rate at 5 years across multiple independent clinical studies
- Nobel Biocare's published 10-year data shows cumulative survival rates above 94% for All-on-4 implants
- Success rates are meaningfully higher in non-smokers, patients with controlled systemic health, and patients with good oral hygiene compliance
- The upper jaw (maxilla) typically has lower bone density than the lower jaw (mandible) and may have slightly lower success rates — a factor your clinician will discuss honestly at consultation
Maintaining Your All-on-4 Implants: Long-Term Care
All-on-4 implants require consistent maintenance to maximise longevity. Your aftercare protocol at PRAXIS Dental will include:
- Daily brushing with a soft-bristle brush and non-abrasive toothpaste — twice daily minimum
- Water flossing (oral irrigator) to clean beneath the bridge — recommended over traditional floss for full-arch bridges
- 6-monthly professional cleaning and implant health assessment at PRAXIS Dental — essential for identifying peri-implantitis (gum inflammation around implants) early
- Night guard if you have a history of bruxism (teeth grinding) — protects the bridge and implant connections from excessive load
- Annual CBCT scan to monitor bone levels around implant fixtures
Frequently Asked Questions: All-on-4 Dental Implants in Mumbai
Can I really get teeth in a day with All-on-4?
Yes — in the majority of cases. The immediate loading protocol means a temporary fixed bridge is attached to your implants on the same day as surgery. You leave the clinic with functional, aesthetic teeth. The permanent bridge replaces the temporary after 3–6 months of osseointegration.
Is All-on-4 painful?
The procedure is performed under local anaesthesia or IV sedation — patients report minimal discomfort during surgery. Post-operative soreness is typically managed with prescription analgesics for 3–5 days. Most patients describe the recovery as milder than anticipated, comparable to multiple extractions. Swelling and bruising are common for 7–10 days.
How long do All-on-4 implants last?
The titanium implant fixtures, if properly maintained, can last 20–40+ years and potentially a lifetime. The zirconia or hybrid ceramic bridge superstructure typically lasts 10–15 years before it may require replacement due to natural wear. Regular professional maintenance is the most important determinant of long-term success.
What is the difference between All-on-4 and All-on-6?
All-on-4 uses four implants with two placed at an angle to maximise bone engagement. All-on-6 uses six implants for greater load distribution and structural redundancy. All-on-6 is preferred when adequate bone volume exists and maximum support is desired, particularly for patients with heavier bite forces. Your CBCT scan will determine which is appropriate.
Can All-on-4 be done if I have bone loss?
One of All-on-4's principal advantages is its ability to work with the available anterior bone — many patients with moderate bone loss do not require grafting. Severe bone loss may still require grafting before implant placement, which your CBCT scan will accurately determine. This is one reason All-on-4 is preferred over conventional full-arch implant protocols for many patients.
How much does All-on-4 cost in Mumbai compared to abroad?
All-on-4 in Mumbai at PRAXIS Dental using Nobel Biocare implants and zirconia bridges is typically 60–80% less expensive than equivalent treatment in the UK, USA, or Australia, with no compromise in implant quality or clinical expertise. Many international patients choose PRAXIS specifically for this reason, combining treatment with recovery time in Mumbai.
Can I have more information about you dental implants services?
Yes. More infoemation about our dental implant services in Mumbai, Indiaare detailed at Dental Implants in Mumbai, India by Dr. Varun Malhotra.