CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / Objetivo: Comparar a eficÃcia de quatro diferentes substÃncias: clorexidina 1%, vancomicina 3%, vancomicina 10% e fluoreto de sÃdio 1,23%, na reduÃÃo de Streptococcus mutans (SM) em crianÃas com cÃrie.
MÃtodos: Setenta e uma crianÃas, entre 4 e 8 anos de idade, foram distribuÃdas aleatoriamente em quatro grupos. Os antimicrobianos foram manipulados na forma de gel e aplicados, durante seis dias consecutivos, por meio de moldeiras individuais previamente confeccionadas. Foi coletada saliva antes do inÃcio do tratamento (D1), apÃs seis dias (D6), apÃs quinze dias (D15) e apÃs trinta dias do inÃcio das aplicaÃÃes (D30). Para anÃlise microbiolÃgica as amostras foram cultivadas sobre Agar MSB, incubadas em estufa a 37oC, com atmosfera de microaerofilia, durante 48 horas. As contagens das colÃnias foram entÃo realizadas e confirmadas a partir de provas bioquÃmicas, expressa em Unidades Formadoras de ColÃnias (UFC)/mL.
Resultados: Quando comparado D6 com D1 encontramos os seguintes resultados: Vancomicina 10% (p = 0,0008) e clorexidina (p = 0,0001) expressaram as menores contagens bacterianas. Comparando D30 com D1: flÃor e clorexidina demonstraram um retorno aos valores iniciais encontrados em D1; enquanto a vancomicina 3% (p = 0,004) e 10% (p = 0,003) tiveram significativo aumento nas contagens bacterianas. No D6, vancomicina 10% (p = 0,0001) e clorexidina (p = 0,000) expressaram menores contagens que o flÃor (Teste Mann-Whitney ), com nenhuma diferenÃa entre ambos os grupos (p = 0,24).
ConclusÃes: No presente trabalho apÃs 6 dias consecutivos de administraÃÃo tÃpica, a clorexidina gel a 1% demonstrou-se tÃo eficaz quanto a vancomicina gel a 10% na reduÃÃo de SM salivares em crianÃas com cÃrie. O fluoreto de sÃdio a 1,23 % e a vancomicina a 3%, entretanto, demonstraram-se igualmente ineficazes. Em conclusÃo, o uso da clorexidina na forma de gel a 1%, por 10 minutos, durante seis dias consecutivos demonstrou grande eficÃcia na reduÃÃo de SM salivares em crianÃas com cÃrie, nÃo tendo ocasionado, apÃs 30 dias, contagens bacteriolÃgicas superiores Ãs observadas inicialmente. / Aim: Compare the effectiveness of four different substances, e.g., 1% chlorhexidine, 3% vancomycin, 10% vancomycin and 1,23 % sodium fluoride, in the reduction of Mutans streptococci (MS) in children with dental caries.
Methods: Seventy one children, with ages between 4 and 8 years, were randomly assigned to one of four groups. The antimicrobial agents were prepared as gels and applied during 6 consecutive days, in previously fabricated custom trays. Saliva samples were collected before treatment application (D1), on the last day of treatment (D6), 15 (D15) and 30 days from day 1 (D30). For microbiological analysis samples were placed on MSB Agar medium, incubated at 37o C, under microaerophilic condition for 48 hours and then reading was performed in order to identify number of colony forming units (CFU)/mL.
Results: When comparing D6 and D1 the following results were observed: Vancomycin 10% (p = 0.0008) and Chlorhexidine (p = 0.0001) expressed significantly lower bacterial counts. Comparisons between D30 and D1 revealed that Fluoride and Chlorhexidine demonstrated a return to baseline values (D1), while Vancomycin 3% (p = 0.004) and 10% (p = 0.003) generated significantly higher counts in D30 than baseline. At D6 Vancomycin 10% (p = 0.0001) and Chlorhexidine (p = 0.000) expressed the lowest bacterial counts when compared to Fluoride (Mann-Whitney test), with no statistically significant difference between these two groups (p = 0.24) being observed.
Conclusions: In the present study, after 6 consecutive days of topical administration, 1% Chlorhexidine gel demonstrated to be as effective as 10% Vancomycin gel in salivary MS reduction in children with dental caries. However, 1.23% Sodium Fluoride and 3% Vancomycin gel demonstrated to be equally ineffective. In conclusion, the use of a 1% Chlorhexidine gel during 10 minutes, for 6 consecutive days demonstrated a great efficacy in salivary MS reduction in children with caries, not leading to bacterial counts higher than what was initially observed.
| Identifer | oai:union.ndltd.org:IBICT/oai:www.teses.ufc.br:525 |
| Date | 05 February 2007 |
| Creators | PatrÃcia Leal Dantas Lobo |
| Contributors | Cristiane SÃ Roriz Fonteles, Nilberto Robson FalcÃo do Nascimento, Maria Elisabete Amaral de Moraes |
| Publisher | Universidade Federal do CearÃ, Programa de PÃs-GraduaÃÃo em Odontologia, UFC, BR |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFC, instname:Universidade Federal do Ceará, instacron:UFC |
| Rights | info:eu-repo/semantics/openAccess |
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