MAXILLA
Transfers stress to entire cranium
Weaker, thin cortices connected via trabeculae
MANDIBLE
Stress handled by soley mandible
Stronger, Stiffer with thick cortices/radially oriented
Structural array: like long bone - load is more Bending/Torsion
BL that has a ditching effect around implant
Hypotheses:
Reflection of periosteum during surgery
Preparation of implant osteotomy
Level of microgap b/w abutment and body
Under dentist control
Establishment of biological gap
Implant crest module design
Occlusal overload
There should be LESS implants used if bone height is very favorable (FPD) and MORE implants used with prosthetic gingival architecture with poor bone height