Streptococcus mutans

Streptococcus mutans is a gram-positive bacteria that lives in the mouth, specifically on teeth. This bacteria grows optimally in the range of 18-40 degrees Celsius. First described by James Killian Clarke in 1924[1], the bacteria is the most common cause of tooth decay and cavities[2].

Streptococcus mutans
Streptococcus mutans 01.jpg
Stain of S. mutans in thioglycollate broth culture.
Scientific classification
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S. mutans
Binomial name
Streptococcus mutans
Clarke 1924

Role in tooth decay

Along with Neisseria spp., various species of streptococci, including ``S. mutans``, and some fungi, form a biofilm known as dental plaque.[3] S. mutans plays a major role in tooth decay, metabolizing sucrose into lactic acid.[2]

  1. "The Biology of Streptococcus mutans". National Library Of Medicine.
  2. 2.0 2.1 Loesche WJ (1996). "Ch. 99: Microbiology of Dental Decay and Periodontal Disease". In Baron S (ed.). Baron's Medical Microbiology (4th ed.). University of Texas Medical Branch. ISBN 978-0-9631172-1-2. PMID 21413316.
  3. Vinogradov AM, Winston M, Rupp CJ, Stoodley P (2004). "Rheology of biofilms formed from the dental plaque pathogen Streptococcus mutans". Biofilms. 1: 49–56. doi:10.1017/S1479050503001078.