== PIE dentals == 

 Hi; I've tried to clarify exactly what Sihler says and what Beekes says. It's really only Sihler who gives the standard view; Beekes is overfond of reconstructing pre-proto-IE (without saying he's doing so), and has bought in to the less-than-mainstream glottalic theory. Neither Sihler nor Beekes does a good job of citing their sources, though, which makes life extremely frustrating. /