Corynebacterium matruchotii
Corynebacterium matruchotii is a species of bacteria in the genus "Corynebacterium". Corynebacteria occur within the normal flora of the human body. "Corynebacterium matruchotii" are Gram positive bacilli with long filaments and short, thick terminal ends. "C. matruchotii" is a bacterium of significance within the oral cavity and comprises the central filament of "corn-cob formations" (formations in which "Streptococcus sanguinis" bacteria bind to and surround "C. matruchotii" to create a corn-cob appearance). "C. matruchotii" can be isolated from dental plaque, although is it not known to be associated with the etiology of dental diseases.