All-on-4 Dental Implants
The All-On-4 (All-On-Four) Dental Implants are a new dental implants technique originally developed in order to help edentulous patients with severe bone loss at the posterior areas of the jaw to get the benefits of implant supported dentures. All-on-6 and All-on-8 are variations of the same technique, but using a larger number of dental implants.
What are All-on-4 Dental Implants?
All-on-4 implants are often used for patients with severe jaw bone loss, too large or too low sinus cavities, or too shallow alveolar nerve in the lower jaw.
The All-on-4 technique requires the placement of only 4 denture implants, all in the anterior part of the jaw, where the jaw bone has usually the best density. In order to achieve better support the 2 implants towards the back of the jaw are placed at a high angle so that they can take advantage of the better bone quality at the front of jaw. With the all-on-4 design, the terminal abutments are tilted at a 30 degree angle from mesial to distal, thus extending the length of the metal framework that can be supported.The All-on-4 Dental Implants Procedure in summary includes:
Benefits of All-on-4 Dental Implants
All-on-4 can provide the following advantages:
Considerations - Risks
Before you decide to take advantage of the all-on-four dental implants you should first consider some of the risks involved:
The use of the All-on-4 implants technique has the following limitations:
All-on-6 / All-on-8
next page -> Dental Implant Bone Grafts
All-on-6 dental implants is just a variation of the all-on-four technique based on the same concept, with the only difference that 6 front implants are used instead of four. Many dental implant dentists prefer the 'all-on-6' option because it is safer (a restoration can be placed even if one of the implants fails).
Another variation is the All-on-8 using 8 dental implants. Unlike the 'All-on-4' technique which uses acrylic dentures, 'All-on-8' uses dental bridges with crowns, which gives a more natural look to the teeth.
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