Bacteriological Study Of Dental Caries Infection In Baquba


  • somya Hassan Turki Department of Biology, College of Science, Diyala University
  • Kareem I. Mubaruk Department of Biology, College of Science, Diyala University



mutans, Dental caries, Biofilm, Antibiotic, Green tea extract, Chili pepper extract


This Study was done form the period October 2016 Until June 2017 In the central laboratory of a hospital belonging to Diyala Health governorate, to isolate and diagnoses Streptococcus mutans bacteria form dental caries infection , their ability in biofilm formation, and the detection of the sensitive antibiotic isolates the inhibitory effect of plant extracts for Green tea and Capsicum annuum on the growth of the bacteria.The results showed that 68 Isolates belonged to Oral Streptococci from 150 samples taken from dental caries infection, 20 isolates (13.3%) of S. mutans bacteria were obtained .the ability of isolate to format of biofilms by (80%), The isolates varied in their sensitivity to antibiotic, Where the percentages of sensitivity for Tetracycline (70), Erythromycin (%65), Streptomycin (% 60), Ciprofloxacin (50)% , While whereas resistance to antibiotics Amoxicillin , Ampicillin, Cefepime, Optochin (100%).the Value of Minimum Inhibition Concretion (MIC) of Tetracycline ranging from (256-1024) micrograms \ ml ,While For antibiotic Erythromycin ranged from (64-1024 ) micrograms \ ml. The highest inhibitory effect of chili pepper and Green tea extracts was (30 and 27) mm respective , So we conclude that the extracts for the chili pepper, green tea have inhibitory ability than more those antibiotics against S.mutansBacteria .This refers to the possibility of benefiting from those extracts in the manufacture of an alternative treatment, for the purpose of minimizing the risks of resistance of bacterial as well as redactor side effects that can result from the use of such antibiotics, in addition, advantages are easy to get and cheaply priced.


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Original Article

How to Cite

somya H. Turki and K. I. Mubaruk, “Bacteriological Study Of Dental Caries Infection In Baquba”, Al-Mustansiriyah Journal of Science, vol. 30, no. 3, pp. 19–27, Oct. 2019, doi: 10.23851/mjs.v30i3.407.

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