Anchors for concrete - what to use on a concrete ceiling?
It is risky ,no matter what you use. A concrete floor/road is basically in compression. The bottom of your ceiling is in tension and concrete is generally considered to have no or poor tensile strength. There should be steel rebar in the ceiling , I would verify the presence and amount of rebar before putting holes in the concrete. Each of those anchors works by putting compressive force on the concrete in the concrete ; this compressive ( expansion ) adds to the tensile stress. I would check with local contractors and find out what they do.