tooth resorption https://www.malacards.org/card/tooth_resorption Resorption of calcified dental tissue, involving demineralization due to reversal of the cation exchange and lacunar resorption by osteoclasts. There are two types: external (as a result of tooth pathology) and internal (apparently initiated by a peculiar inflammatory hyperplasia of the pulp). (From Jablonski, Dictionary of Dentistry, 1992, p676) MONDO:0001670 SCTID:70931000 ICD9:521.4 DOID:13240 MEDGEN:21587 MESH:D014091 UMLS:C0040451 tooth hard tissue disease