RESUMO
A study of the predominant subgingival microflora was carried out in 24 periodontitis patients, 18 to 60 years of age, in Santo Domingo, Dominican Republic. Paper point sampling, transport in VMGA III, and conventional microbiological techniques were utilized. Direct microscopic examination revealed that cocci and nonmotile organisms made up 85% of the total organisms and spirochetes as little as 3%. Nonselective culturing showed Gram-negative organisms to constitute 53% of total isolates. Fusobacterium nucleatum averaged 15%, black-pigmented anaerobes 7%, and Peptostreptococcus micros 10% of the cultivable microflora. Enteric rods and acinetobacter species were recovered from 16 patients and comprised 23% of the cultivable flora. Enterobacter cloacae occurred in 8 patients, Klebsiella oxytoca in 3 patients, and 7 other species in 10 patients. Parallel studies have found a significantly lower prevalence of enteric rods in advanced periodontitis patients in the USA. In conclusion, fewer spirochetes and markedly more enteric rods seem to inhabit adult periodontitis lesions in Santo Domingo patients compared to those in USA. High levels of subgingival enteric rods in periodontitis patients in Santo Domingo may have important prophylactic and therapeutic implications.
Assuntos
Bactérias/isolamento & purificação , Gengiva/microbiologia , Periodontite/microbiologia , Adolescente , Adulto , Bactérias/classificação , Bacteroides/isolamento & purificação , República Dominicana , Feminino , Fusobacterium nucleatum/isolamento & purificação , Bactérias Gram-Negativas/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Peptostreptococcus/isolamento & purificação , Bolsa Periodontal/microbiologia , Porphyromonas gingivalis/isolamento & purificação , Spirochaetales/isolamento & purificação , Streptococcus/isolamento & purificaçãoRESUMO
Selected microbial components in dental plaque were determined for children in Biddeford, Maine and Colombia, South America. Using cultural methods, Streptococcus mutans was detected in 51.4% of the Colombian children and 63.3% of the Maine children. Serotype c was predominant in both populations. The greatest difference between the two groups occurred with serotypes d and g which were present in 25% of the Colombian children with S. mutans and were not detected in the Maine children. In the specimens examined with specific FA conjugates. Actinomyces was the predominant genus, present in all individuals and comprising an average of 52% of all cells.
Assuntos
Actinomyces/isolamento & purificação , Placa Dentária/microbiologia , Lactobacillus/isolamento & purificação , Streptococcus mutans/isolamento & purificação , Adolescente , Criança , Colômbia , Feminino , Imunofluorescência , Humanos , Maine , Masculino , Streptococcus/isolamento & purificaçãoAssuntos
Cárie Dentária/etiologia , Placa Dentária , Saliva , Microbiologia da Água , Abastecimento de Água , Adolescente , Criança , Colômbia , Placa Dentária/análise , Placa Dentária/microbiologia , Placa Dentária/fisiopatologia , Humanos , Concentração de Íons de Hidrogênio , Íons , Saliva/análise , Saliva/microbiologia , Streptococcus mutans/citologia , Streptococcus sanguis/citologia , Abastecimento de Água/análiseRESUMO
Guatemalan children with anterior linear enamel hypoplasia (LEH) had a significantly greater caries experience in posterior dentition than their peers who did not have anterior LEH. The findings suggest that the synergistic mechanism of undernutrition and infection, which may underlie the occurrence of anterior LEH, may also predispose clinically normal appearing deciduous molars to an excessive caries attack equal to that observed in the grossly hypoplastic anterior teeth. The nutritional implications merit further investigation.
Assuntos
Cárie Dentária/etiologia , Hipoplasia do Esmalte Dentário/complicações , Dente Molar , Dente Decíduo , Criança , Pré-Escolar , Índice CPO , Feminino , Guatemala , Humanos , Masculino , Distúrbios Nutricionais/complicações , Fatores Sexuais , Estados UnidosRESUMO
The unsatisfactory dental health situation in the majority of the Latin American population, presently not covered by existing dental services, led to a serious questioning of the educational process directed to prepare human resources in dentistry. At the present time, many dental schools in Latin America are trying to find and implement new teaching methods, different curriculum patterns, and even seeking to define new professional and non-professional profiles, in order to meet the tremendous challenge that requires the formation of a different type of dental health personnel capable of introducing definite changes in the way dentistry is conceived and performed in order to cover the needs of a constantly growing population.
Assuntos
Educação em Odontologia , Serviços de Saúde Comunitária , Assistentes de Odontologia , Clínicas Odontológicas , Guatemala , América Latina , México , Panamá , Peru , População RuralRESUMO
A study of 528 Guatemalan children indicated that caries prevalence in the deciduous dentition was twice as great as but in the permanent dentition was similar to that for US white children. This is a repeated observation for children of some preindustrial societies. Caries experience was significantly greater in boys. Until 4 years of age, caries attack was greater in the anterior segment of the oral cavity; linear enamel hypoplasia was a predisposing factor.