What is the difference between All-on-4 and All-on-6?

All-on-4 uses four angled implants to make maximum use of the bone. All-on-6 provides more support through six straight implants. All-on-4 is suitable for moderate bone loss, while All-on-6 suits better bone quality. Costs differ by 20 to 30% because of the extra implants and laboratory work. All-on-6 distributes chewing forces more evenly, which extends the lifespan. Both systems use a fixed prosthesis that can be loaded immediately. All-on-4 carries a higher risk of screw fractures under heavy loading. All-on-6 requires more surgical time and experience. The choice depends on jaw anatomy and bite force requirements. 3D planning determines the optimal configuration for each patient.