Full-Arch Dental Implants in Auckland: How All-on-4 Works

All-on-4 is a full-arch (whole-jaw) tooth replacement system that supports a complete set of fixed replacement teeth using only 4 dental implants, rather than the 6 to 10 implants traditionally required to anchor a full arch.

The name describes the method exactly: “all” teeth on the arch are supported by “4” implants. This applies separately to the upper jaw (maxilla) and lower jaw (mandible) — many patients have All-on-4 on one arch, both arches, or combine it with other tooth replacement options depending on their needs.

How Does All-on-4 Work? (Step-by-Step)

• Consultation and assessment: A dentist examines your mouth, takes scans or X-rays, and confirms whether you’re a candidate for All-on-4. This is also when any teeth that need removing before implant placement are identified.
• Digital treatment planning: A surgical guide is digitally planned and customised to the exact dimensions of your jaw, so the implants can be placed with precision.
• Implant placement: Four titanium implants are surgically placed into the jawbone:
  —— 2 implants are positioned vertically at the front of the jaw.
  ——-2 implants are angled at roughly 45 degrees toward the back of the jaw.

This angled positioning is what makes All-on-4 different from traditional implants — it lets the implants “lock” together and distribute chewing forces across a wider area of available bone, which is why bone grafting is rarely needed.

• 4. Abutment and restoration attachment: Small connector devices called abutments are attached to the implants, followed by the new fixed teeth (the arch).
• Same-day teeth (for eligible patients): Because only 4 implants are needed and they’re positioned for immediate stability, many patients can leave with a full, functional temporary arch on the same day as surgery.
• Healing and final restoration: Over roughly 6 months, the implants fuse with the jawbone through a process called osseointegration. Once healing is complete, the permanent, final restoration is fitted.

Who Is a Candidate for All-on-4?

All-on-4 is generally suitable for people who:

• Are missing most or all of the teeth in an arch
• Wear a full or partial denture that feels loose, uncomfortable, or unstable
• Have failing teeth due to decay, gum disease, or trauma and want a permanent, fixed solution
• Want to avoid the bulk, adhesive, and bone loss associated with removable dentures
• Have enough remaining jawbone density to support 4 implants (assessed via consultation and scans)

A consultation with a dentist is the only way to confirm candidacy, since jawbone volume, gum health, and overall health all factor into the assessment.

Is All-on-4 Painful? What About Recovery?

Implant placement is a surgical procedure, so some swelling and discomfort in the days afterward is normal — this is typically managed with standard pain relief. For anxious patients, treatment can be carried out under sedation. Most people return to normal light activities within a few days, while full bone integration takes around 6 months.

Book a Free All-on-4 Consultation in Auckland

Northmed Dental provides free initial consultations to assess your suitability for All-on-4, walk through your options, and discuss finance plans. Their NZ-qualified dentists are experienced in treating anxious patients and offer sedation for those who need it.

Frequently Asked Questions

Q.1 How many implants does All-on-4 use per arch?
Ans. Four implants per arch — two placed straight at the front and two angled at roughly 45 degrees at the back.

Q.2 Can I get new teeth on the same day as surgery?
Ans: Yes, in many cases. Single-day implants with a full temporary arch are available for suitable candidates, meaning you can leave with a functioning smile the same day the implants are placed.

Q.3 Does All-on-4 require bone grafting?
Ans. Rarely. The angled placement of the back implants makes use of the denser bone that’s usually still available in the jaw, which is why bone grafting is often avoidable with this technique.

Q.4 Is All-on-4 available under sedation?
Ans. Yes. Treatment can be carried out under sedation for patients with dental anxiety or phobias.