All-on-4 vs All-on-6 Blacktown — Which Is Better?

If you are looking to replace a full arch of missing or failing teeth, you have likely come across the terms “All-on-4” and “All-on-6”. Both are revolutionary full-arch dental implant procedures that offer a permanent, fixed alternative to traditional removable dentures. But what exactly is the difference, and how do you know which one is right for you?

At Your Family Dentist, we perform both All-on-4 and All-on-6 dental implants in Blacktown NSW. In this comprehensive guide, we will compare the two treatments, explaining the surgical differences, the benefits of each, and how our experienced implant dentists determine the best approach for your unique smile.

The Basics of Full Arch Implants

Before comparing the two, it is helpful to understand what they share. Both All-on-4 and All-on-6 are designed to rehabilitate an entire arch (upper or lower jaw) using a minimal number of dental implants.

Instead of replacing 14 individual teeth with 14 individual implants (which is unnecessary and prohibitively expensive), these procedures use a strategic number of titanium implants to act as sturdy pillars. A custom-made, full-arch ceramic bridge is then permanently screwed onto these pillars. The result is a set of teeth that look natural, do not slip, and allow you to eat anything you want.

What is All-on-4?

The All-on-4 technique uses exactly four dental implants per arch.

• Two implants are placed vertically in the front of the jaw, where the bone is naturally thickest and strongest.
• Two implants are placed in the back of the jaw at a steep angle (usually 30 to 45 degrees).

The Angled Advantage: By angling the back implants, the dentist can utilise denser bone further forward in the jaw while still providing support for the back teeth. This ingenious angulation often allows patients with significant bone loss in the rear jaw to receive implants without needing extensive and costly bone grafting procedures.

What is All-on-6?

The All-on-6 technique uses six dental implants per arch.

• Four implants are placed in the front and middle of the jaw.
• Two implants are placed straight down in the back of the jaw.

Because the implants in the back are placed straight down rather than angled, the All-on-6 procedure requires the patient to have sufficient bone density and volume in the posterior (rear) areas of the jaw.

Comparing the Two: Which is Better?

Neither procedure is universally “better.” The right choice depends entirely on your specific anatomical needs. Here is how they compare across key factors:

1. Stability and Bite Force Distribution

While All-on-4 provides excellent stability, All-on-6 inherently provides more. Think of it like a table: a table with six legs is naturally more stable and can bear more weight than a table with four legs. The six implants distribute the massive forces of chewing more evenly across the jawbone. For this reason, All-on-6 is often preferred for patients with a heavy bite or those who grind their teeth (bruxism).

2. Upper vs Lower Jaw

The bone in the lower jaw (mandible) is generally much denser and harder than the bone in the upper jaw (maxilla). Because the upper jaw bone is softer, we often prefer the All-on-6 approach for the upper arch to provide extra support and ensure long-term success. All-on-4 is very frequently used for the denser lower jaw.

3. Bone Density Requirements

This is the primary deciding factor. If you have been missing teeth for a long time, your jawbone will have shrunk. If you have severe bone loss in the back of your jaw, you may not have enough bone to support the straight back implants required for All-on-6. In this scenario, the angled implants of the All-on-4 technique are the perfect solution, allowing you to avoid bone grafting.

4. Ease of Cleaning

Both require diligent oral hygiene. However, some patients find that cleaning around four implants is slightly easier and faster than cleaning around six implants using water flossers and interdental brushes.

The Verdict: How Do We Decide?

You do not need to make this decision on your own. When you visit Your Family Dentist Blacktown for a consultation, we will take comprehensive 3D CBCT scans of your skull. These scans allow us to view your jawbone in three dimensions, measuring the exact height, width, and density of the bone down to the millimetre.

Based on these scans, our implant dentists will recommend the safest, most predictable, and longest-lasting solution for your specific anatomy.

Book Your Full Arch Consultation in Blacktown

Whether you need All-on-4 or All-on-6, the result is the same: a permanent, beautiful smile that restores your confidence and allows you to eat your favourite foods again.

Ready to find out which option is right for you?
Call Your Family Dentist Blacktown on (02) 7256 4979 or book your implant consultation online today.