Overview: Corynebacterium matruchotii is abundant in both supragingival and healthy subgingival plaque (Eren et al. 2014, Esberg et al 2020). It was originally called Bacterionema matruchotii and was reclassified into the genus Corynebacterium in 1982 (Collins 1982).

Ecological role/importance in health and disease: C. matruchotii forms the central filament in "corn-cob" structures of dental plaque and clumps of C. matruchotii form the basis of "hedgehog" consortia in plaque (Jones 1972, Mark Welch et al. 2016). The species is associated with health rather than caries (Schoilew et al. 2019).