شناسايي و تعيين درصد سنگوئيس در بيماري ژنژويت و اثر آنتي بيوتيك هاي بتالاكتام بر روي اين باكتري ها

Determination of Streptococcus Sanguis in Gingivitis Disease and Effect of fe-lactam Antibiotics on It

Background: Gingivitis is a destructive inflammatory disease. The results of some studies show that bac¬teria of plaques are different in diseased and healthy areas; so the identification and sensitivity to p-lactam antibiotics was the most important aim of this study. Methods: This study was performed on 361 strains of bacteria identified by biochemical tests; the number of streptococcus and its percentage were 204 and 55.9 respectively. The antimicrobial suscep¬tibility of strains of streptococcus was determined by Disk plate or Kerby-Bauer. The difference be¬tween the mean zones of inhibition of gingivitis strains were studied by t-test. Findings: The percentages of streptococcus sanguis was 26.4% and of streptococcus sanguis more than 70%. These bacteria were sensitive to amoxicillin, co-amoxiclave, and erythromycin and also sensitive to tetracycline, penicillin, and cephalexin. 1% of these bacteria were sensitive to clindamyc. Conclusion: These bacteria were sensitive to p-lactam antibiotics, and we can use p-lactam antibiotics for treatment. Keywords: Gingivitis, Streptococcus sanguis, Sensitive, p-lactam antibiotics.