Can I use ANDs as Tri State Buffers?
No you can't:
This is a tri-state truth table (this one also inverts, also the EN is B in the diagram):

Source:http://karmic23.blogspot.com/2011/01/cmos-inverting-tri-state-buffer.html
An 'AND' gate only output's high and low's
A tri-state will float when the output is in High-Z, this means you can connect two or more to the same wire and if they are in High-Z mode, it won't interfere with the other outputs of other tri-state buffers, which makes them useful for constructing busses. If you connect the outputs of two and gates together, your likely to get a over current condition when one goes high and the other low.
In short: Tri-state buffers are for 'buffering' the outputs can be connected (though two should not be enabled at the same time). 'AND' gates outputs should not be connected.