What is All-on-4?
All-on-4 is a full-mouth dental implant technique that uses four implants positioned at strategic angles to support a fixed prosthesis for an entire dental arch.
The All-on-4 technique positions four dental implants in the jawbone to anchor a complete upper or lower set of replacement teeth. Two implants are placed vertically in the front of the jaw where bone density is typically stronger, while the back two implants are angled forward (often 30 to 45 degrees) to maximize existing bone and avoid the sinuses or nerve channels. This angulation allows the posterior implants to engage deeper bone without requiring bone grafting in many cases.
The four implants support a fixed bridge or denture that spans all teeth in one arch, providing greater stability and chewing function than removable dentures. Patients keep the prosthesis in place permanently and cannot remove it themselves, though a dentist can. Because fewer implants are needed compared to replacing each tooth individually, All-on-4 typically requires less bone volume, shorter treatment time, and lower total cost.
This technique addresses a common problem in dental restoration: patients with severe tooth loss, bone loss, or failing teeth who want fixed teeth but have insufficient bone for traditional multi-implant cases. Many Greenville dental implant practices offer this option for full-arch restoration. To explore providers specializing in full-mouth implants, consult your local directory to find experienced clinicians in your area.