Multi-Drug Resistance of Bacterial Isolates among Dental Caries Patients

Background and Objectives: Dental caries is a well known major oral health problem in most developing countries which has multifactorial etiology caused by many facultatively anaerobes. S. mutans is the main pathogen associated with this disease. Recently Multi-Drug Resistant (MDR) species of S. mutans were identified from the dental caries patients against many commercial antibiotics. MDR is a natural phenomenon, posing a serious worldwide threat to public health. Several therapeutic agents are available to treat or prevent tooth decay, but still global burden of the disease with MDR are emerging. Therefore, the present study was designed for assessing the antibiotic sensitivity pattern of commercially available antibiotics.Material and Methods: This cross-sectional study was carried out by following Standard protocols of Bergey’s Manual of Systematic Bacteriology to isolate and identify the organism and further followed by antibiotic susceptibility test of bacterial isolates by disc diffusion method.Results: Streptococcus mutans (40%) was the most predominant to cause dental caries followed by S. aureus with 28.92. Gram positive isolates were found to be frequently resistant towards penicillin and tetracycline whereas Gram negative isolates were found to be Cotrimoxazole resistant.Conclusion: A high frequency of penicillin resistance in oral isolates and its co-resistance to erythromycin, tetracycline, gentamycin and amipicillin among the pateints was observed. The various awareness programmes should be facilitating the appropriate use of antibiotic to re-establish dominance over diseases must be implemented.

Dental carries and oral hygiene knowledge and practice of 12-years-old pupils at some secondary schools in Hai Duong city

Study on dental carries situation of 200 pupils at 6 secondary schools in Hai Duong city. Results: The rate of dental carries of 12 years old pupils was high (67%), in the 6th teeth was 63%. 80.5% of pupils had good knowledge of oral hygiene and 74.5% had good practice of oral hygiene. School based oral health program is strongly supported and collaborated by the leaders of schools. It is necessary to develop human resource for school based oral health program, and the teachers should be trained for co-operation and participation this program.

Fluor concentration in water and the rate of dental carries of the 3rd grade pupils at 5 primary schools in Bac Can province

Study on total 3rd grade pupils at 5 primary schools in Bac Can province in school year 2001-2002. Results: the rate of dental carries of primary teeth was 64%, of permanent teeth was 12.3%, the decayed, missing and filled teeth (DMFT) index was 2.1 in primary teeth and 0.18 in permanent teeth. There were 99.13% of water samples with low concentration of fluor, among them 98.26% of samples was lower than 0.5mg/L. All these rates and indexes were higher than national rates and indexes.