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description Journal article public Makara Journal of Health Research

The Prevalence of Antibiotic and Toothpaste Sensitivity Found in Oral Streptococcal Isolates in Healthy Individuals in the Okada Community of Nigeria

Maureen U. Okwu, Olley Mitsan
Published 2 April 2017

Abstract

Background: This study aimed to determine the prevalence, antibiotic, and toothpaste sensitivity of oral streptococcal isolates in healthy individuals in the Okada community of Nigeria. Methods: Oral samples were collected from 230 volunteers and were subjected to standard microbiological tests. Antibacterial sensitivity tests were carried out on the streptococcal isolates that were obtained using a disk diffusion technique, and eight kinds of toothpaste (A-H) were screened for their antibacterial effects on Streptococcus mutans (S. mutans). Results: The prevalence of oral streptococci found in this study was 26.1% and the predominant species was S. salivarius (13.9%). S. salivarius was highly resistant to cloxacillin (100%) and Augmentin (96.9%), whilst resistance to gentamicin and erythromycin was low at 21.9% and 3.1% respectively. S. mutans were completely sensitive to gentamicin whilst resistance to erythromycin was 33.3%. The entire Streptococcus species showed the lowest resistance to erythromycin (20.0%), followed by gentamicin (31.7%). At 100 mg/mL all toothpaste samples had antibacterial effects on S. mutans. At 50 mg/mL all samples except toothpastes G and H inhibited the bacterium. Toothpastes A and E had the lowest minimum inhibitory concentration of 25 mg/mL. Conclusions: Toothpastes A and E were the most effective toothpastes of the eight assessed in this study.

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