What is the best implant material for facial augmentation? Lowest risk of complications/cancer/infection etc

I have consulted with 3 surgeons, all of whom agree I have mid face deficiency, making my paranasal area very sunken. One surgeon recommended fillers with implants later if I like the result. He said fat transfer was not the best solution for a skeletal deficiency. The next surgeon suggested fat transfer. The last surgeon did a CT scan of my head and discovered an 4mm deficiency in the areas either side of my nose in the mid cheek- he suggested custom onlays of titanium. I'd love some advice!