periodonticsnoun [ U ]
uk/ˌper.i.əʊˈdɒn.tɪks//ˌper.i.oʊˈdɑːn.t̬ɪks/specializedthe area of dentistry (= the work of a dentist) concerned with the gums (= the pink flesh in the mouth into which the teeth are fixed) and other tissues around the teeth
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