Failure of the Implant That Occurs After the Initial Integration

Multiple Choice

Failure of the implant that occurs after the initial integration is often caused by which condition(s) ?
1) Bacterial infection extending from the peri-implant tissues into the bone
2) Generation of excessive heat when the implant hole is drilled into the bone
3) Overloading of the implant during function

A) 1,2,3
B) 1,2
C) 1,3
D) 2