den sru lujvo

x₁ is the gum/cementum of animal x₂.

In notes:

denke'a: x₁=k₁ is a tooth cavity/dental caries [demineralized site] of tooth x₂=k₂=d₁
densrumikce: m₁ is a periodontist treating patient(s) m₂ for ailment m₃ involving cure m₄.