If you have experienced the loss of multiple teeth or are considering a permanent alternative to dentures, All-on-4 implants may be a suitable option. Understanding how the technique works can help you make an informed decision.

The All-on-4 Technique

The Nobel Biocare All-on-4 technique replaces a full arch of teeth using just four dental implants. Two are placed in a parallel position at the front, and two are placed at the back at a 45-degree angle.

The angled rear implants provide strong support across the jaw and help overcome bone deficiencies that may be present at the back of the mouth. The implant design expands the bone rather than cutting through it, which avoids the need for bone grafting and allows the patient to receive new teeth within days.

The goals of the All-on-4 approach are to:

• Restore function and appearance
• Minimise disruption to daily life during treatment
• Allow normal eating once fully healed

Assessment Before Treatment

The first step is a consultation, where the dental team answers questions and helps determine whether All-on-4 is the most suitable option.

A CT scan is then used to assess the bone structure and shape around the jaw. This allows the dentist to plan the surgical procedure. Careful measurements of the mouth ensure the implants and prosthesis will fit precisely.

Fitting the Implants

All-on-4 allows a full-arch prosthesis to be securely supported by just four implants. The rear implants are inserted at a 45-degree angle for stability. Options are available even where there is limited bone at the back of the mouth. At the front, the bone may be shaped to ensure a natural-looking result.

The key benefit is that All-on-4 avoids the time, discomfort, and cost associated with bone grafting.

Fitting the Prosthesis

The All-on-4 prosthesis includes a set of 12 teeth. After the implants are placed, the dentist assesses the teeth in the mouth and makes adjustments to ensure a comfortable fit. This process is usually completed within 1 to 3 days.

During the procedure, the surgeon may reduce bone to ensure a flush fit with the bridge. Once swelling subsides, the final teeth are fitted.

The Final Prosthesis

The completed All-on-4 prosthesis is designed to look and function like natural teeth. The teeth are made from ceramic or acrylic, matched to the size of natural teeth.

Features of the final prosthesis include:

• New teeth supported by a one-piece bridge for strength and stability
• Bridge material options include full acrylic, metal acrylic, or metal-ceramic
• The prosthesis is flexible enough to facilitate speech and eating
• A soft tissue layer provides comfort against the gums
• Horizontal cantilever support is available where additional stability is needed

All-on-4 is suitable even where the jawbone has deteriorated, allowing teeth to be placed at a natural length.

All-on-4 Upper Denture

If you have lost multiple teeth in the upper jaw, All-on-4 can replace them using the same angled implant technique. The prosthesis is fixed to the maxilla (the bone at the top of the mouth). Even where this bone has softened or deteriorated, the tilted implant approach allows stable placement.

The result is natural-looking teeth within a few days. A follow-up appointment is recommended after 5 years to check stability.

Why Implants Rather Than Removable Dentures?

For patients seeking a long-term outcome, fixed implants offer advantages over removable dentures. According to a 2009 retrospective study published in the International Journal of Oral Maxillofacial Implants, dental implants have a higher success rate than removable prostheses.

All-on-4 Compared to Conventional Full-Arch Implants

A 2014 longitudinal study from the Case School of Dental Medicine, published in Implant Dentistry, compared patients who received conventional full-arch implants with those who received All-on-4. The study found that All-on-4 was less costly, less time-consuming, and offered improved patient comfort throughout the process.

You can learn more about the difference between All-on-4 and conventional dentures. Whichever option you are considering, our team can assess your teeth and jaw and provide suitable treatment recommendations.

Your Next Step

Contact The Point Dental to book a consultation about the All-on-4 implant technique. Our team is trained by the MALO Institute and experienced in delivering this procedure.