The All-on-4 implant system is a revolutionary full-arch tooth replacement technique, pioneered by Nobel Biocare with 25 years of clinical success and over 250,000 treated patients. It uses just four implants per jaw to support a fixed prosthesis, eliminating the need for removable dentures.
The core design features two vertically placed anterior implants and two posterior implants tilted up to 45°, strategically avoiding anatomical structures like the maxillary sinus or mandibular nerve. This biomechanical innovation maximizes bone contact, enabling a graftless solution even for patients with severe alveolar bone atrophy.
A key advantage is immediate loading-patients receive a functional temporary prosthesis on the surgery day, with final restorations fitted in 3–6 months. It cuts treatment time and costs by 50% compared to traditional full-arch implants (which require 8–12 implants). Clinical studies confirm a 98% mean implant survival rate over 7.5 years, with stable marginal bone levels.
Ideal for edentulous or soon-to-be edentulous patients, it restores natural chewing function (up to 90% of natural teeth) and aesthetics. The fixed prosthesis is easy to maintain, supporting oral health without the discomfort of loose dentures. With high patient satisfaction (95%), it remains a safe, predictable choice for full-arch rehabilitation worldwide.