stomatology - teeth, neurology - ?

BRAIN
WordClue
GUMThe flesh around the teeth
HEARTstomatology - teeth, cardiology - ?
LIVERstomatology - teeth, hepatology - ?
TEETHneurology - brain, stomatology - ?
NEUROLOGYteeth - stomatology, brain - ?
CARDIOLOGYteeth - stomatology, heart - ?
HEPATOLOGYteeth - stomatology, liver - ?
STOMATOLOGYbrain - neurology, teeth - ?
LIVERstomatology - teeth, hepatology - ?
ROCKstone