Streptococcus mutans

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Streptococcus

 [strep″to-kok´us]
a genus of gram-positive, facultatively aerobic cocci (family Streptococcaceae) occurring in pairs or chains. It is separable into the pyogenic group, the viridans group, the enterococcus group, and the lactic group. The first group includes the beta-hemolytic human and animal pathogens; the second and third include alpha-hemolytic parasitic forms occurring as normal flora in the upper respiratory tract and the intestinal tract, respectively; and the fourth is made up of saprophytic forms.
Streptococcus mu´tans a species implicated in dental caries.
Streptococcus pneumo´niae a small, slightly elongated, encapsulated coccus, one end of which is pointed or lance-shaped; the organisms commonly occur in pairs. This is the most common cause of lobar pneumonia, and it also causes serious forms of meningitis, septicemia, empyema, and peritonitis. There are some 80 serotypes distinguished by the polysaccharide hapten of the capsular substance. Called also pneumococcus.
Streptococcus pyo´genes a beta-hemolytic, toxigenic, pyogenic species that causes septic sore throat, scarlet fever, rheumatic fever, puerperal fever, acute glomerulonephritis, and other conditions in humans.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Strep·to·coc·cus mu·tans

a bacterial species associated with the production of dental caries in humans and in some other animals and with subacute endocarditis.
Farlex Partner Medical Dictionary © Farlex 2012

Strep·to·coc·cus mu·tans

(strep'tō-kok'ŭs myū'tanz)
A bacterial species associated with the production of dental caries in humans and in some other animals and with subacute endocarditis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Strep·to·coc·cus mu·tans

(strep'tō-kok'ŭs myū'tanz)
A bacterial species associated with the production of dental caries in humans and with subacute endocarditis.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
In order to make bacterial suspension few colonies of S. mutans was transferred to 5 ml of broth [BHI, Difco, and Detroit, MI].
From 18 patients, only 4 patients presented S. mutans isolates before and after the sealing.
We assessed the plaque and salivary S. mutans scores with a commercially available kit (Strip Mutans, Orion Diagnostica, Espoo, Finland) in accordance with the manufacturer's instructions (Jensen B., Bratithall D, 1989) (8).
In Petri dishes (CITOTEST[R]) containing Muller Hinton Agar--(AMH) (Himedia[R]) culture medium were seeded 100 |L inoculums of the S. mutans, S.
The natural extracts of Streptomyces strains significantly inhibited and delayed the biofilm formation by S. mutans and a profound effect was observed in case of the extracts of Streptomyces strains HU-09 and HU-10, which delayed biofilm maturation and even decreased biofilm formation with the passage of time.
The use of mouthwashes and toothpastes containing antimicrobial components such as triclosan and chlorhexidine was purposed to inhibit the S. mutans. Among all active substances in mouthwash, chlorhexidine is the golden standard for inhibiting dental plaque formation of S.
The purpose of the present study was to explore in vivo early S. mutans biofilm formation on HT induced nanoporous Ti[O.sub.2] surfaces and to examine the effect of UV light activation on the biofilm development.