Hi my partner decided to have full set of implants consisting of bar on bottom for lower set and implants for top after having bone graft and sinus lift...due to the pain having lower one's she cannot revisit to have the upper done so is deciding to have false top set...she has already had bone graft and sinus lift and has been advised that the bone graft will deterate if she does not follow through with the implants...is this true she can't go through the pain again