periodontitis
C1CEFR level
65/100Rarity: rare
TechnicalRegister
A destructive inflammatory disease of the tooth-supporting tissues causing irreversible loss of attachment and alveolar bone.
Untreated periodontitis led to progressive pocket formation and eventual tooth mobility.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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