Where does “edentulosity” come from?

edentulosity (English) comes from English edentulous, from Latin edentulus, from Latin dēns, from Italian dente, from Latin dens, from Proto-Italic dents, from Proto-Indo-European h₃dónts, from Proto-Indo-European h₁ed- — to eat.

Ancestry of “edentulosity”, step by step

Step	Language	Word	Meaning
1	English	edentulous	Toothless
2	Latin	edentulus	toothless
3	Latin	dēns	a tooth
4	Italian	dente	tooth; cog, prong
5	Latin	dens	tooth; a spike, prong, or any tooth-like...
6	Proto-Italic	dents	tooth
7	Proto-Indo-European	h₃dónts	tooth
8	Proto-Indo-European	h₁ed-	to eat

Every word from Proto-Indo-European h₁ed- →Every word from Proto-Indo-European h₃dónts →Every word from Proto-Italic dents →