How All-on-4 Works
The protocol was developed by Professor Paulo Maló in Lisbon and commercialised by Nobel Biocare. Its key innovation: tilting the posterior implants at 30–45° angles to maximise contact with available bone while avoiding critical anatomy.
- Two straight anterior implants + two tilted (30–45°) posterior implants per arch
- Tilting avoids the maxillary sinuses (upper jaw) and mental foramen (lower jaw)
- Eliminates or minimises the need for bone grafting
- Allows immediate loading — you leave surgery with a fixed provisional prosthesis the same day