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The aim of the study was to evaluate the association between salivary anti-Porphyromonas gingivalis IgA antibodies and the leprosy reaction. The levels of salivary anti - P. gingivalis IgA antibodies, together with salivary flow and pH were measured in individuals diagnosed with leprosy and associated with the development of the leprosy reaction. Saliva was collected from 202 individuals diagnosed with leprosy at a reference leprosy treatment center, 106 cases with the leprosy reaction and 96 controls without the leprosy reaction. Anti - P. gingivalis IgA was evaluated by indirect immunoenzyme assay. Non-conditional logistic regression analysis was employed to estimate the association between antibody levels and the leprosy reaction. There was a positive statistically significant association between the levels of anti - P. gingivalis IgA and the presence of the leprosy reaction, controlling for confounders: age, sex, level of education and alcoholic beverage consumption: ORajusted: 2.55; IC 95%: 1.34-4.87. Individuals with leprosy who had high levels of salivary anti - P. gingivalis IgA had approximately twice as many chances of developing the leprosy reaction. The findings suggest a possible relationship between salivary anti - P. gingivalis IgA antibodies and the leprosy reaction.
ABSTRACT
OBJECTIVE: To determine the association between the presence of periodontal pathogens and low birthweight. METHODS: This observational and case-control study consisted of mothers of infants weighing <2,500g (Group A), and mothers of newborns weighing ≥2,500g (Group B), born at Hospital da Mulher in Feira de Santana (BA), Brazil. A semi-structured questionnaire covering demographic data, gestational history and aspects related to general and oral health was employed postpartum. Following a complete periodontal examination, biofilm samples were collected at six sites in the mouth. The participants were further categorized in terms of presence or absence of periodontitis. Differences between the groups were determined using Pearson's χ 2 test, odds ratio, and confidence intervals were obtained using the Mantel-Haenszel test. RESULTS: Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia and Prevotella intermedia were detected by polymerase chain reaction. A total of 303 postpartum women were evaluated, 224 (73.9%) in Group B. Statistically significant differences between the groups were found for age, body mass index and history of previous low birthweight babies. Group A had a higher frequency of periodontitis (33.34%) than Group B (16.22%). P. gingivalis and P. intermedia were detected more frequently among women with periodontitis (74.19% and 88.70%, respectively). CONCLUSION: In this population, there was no association between the presence of maternal periodontal pathogens and the occurrence of low birthweight infants.
ABSTRACT
ABSTRACT Objective To determine the association between the presence of periodontal pathogens and low birthweight. Methods This observational and case-control study consisted of mothers of infants weighing <2,500g (Group A), and mothers of newborns weighing ≥2,500g (Group B), born at Hospital da Mulher in Feira de Santana (BA), Brazil. A semi-structured questionnaire covering demographic data, gestational history and aspects related to general and oral health was employed postpartum. Following a complete periodontal examination, biofilm samples were collected at six sites in the mouth. The participants were further categorized in terms of presence or absence of periodontitis. Differences between the groups were determined using Pearson's χ 2 test, odds ratio, and confidence intervals were obtained using the Mantel-Haenszel test. Results Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia and Prevotella intermedia were detected by polymerase chain reaction. A total of 303 postpartum women were evaluated, 224 (73.9%) in Group B. Statistically significant differences between the groups were found for age, body mass index and history of previous low birthweight babies. Group A had a higher frequency of periodontitis (33.34%) than Group B (16.22%). P. gingivalis and P. intermedia were detected more frequently among women with periodontitis (74.19% and 88.70%, respectively). Conclusion In this population, there was no association between the presence of maternal periodontal pathogens and the occurrence of low birthweight infants.
RESUMO Objetivo Determinar a associação entre a presença de patógenos periodontais e o baixo peso ao nascer. Métodos Trata-se de estudo observacional e caso controle. Participaram mães de bebês com peso <2.500g (Grupo A) e de recém-nascidos com peso ≥2.500g (Grupo B) nascidos no Hospital da Mulher, em Feira de Santana, (BA). Dados demográficos, história gestacional e aspectos relacionados à saúde geral e bucal foram obtidos por meio de questionário semiestruturado, aplicado no período pós-parto. Após exame periodontal completo, as amostras de biofilme foram coletadas em seis locais na boca. As participantes foram também categorizadas quanto à presença ou ausência de periodontite. As diferenças entre os grupos foram obtidas pelo teste do χ 2 de Pearson, odds ratio e os intervalos de confiança pelo teste de Mantel-Haenszel. Resultados Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia e Prevotella intermedia foram detectados por reação em cadeia de polimerase. Avaliaram-se 303 mulheres pós-parto, sendo 224 (73,9%) do Grupo B. Diferenças estatisticamente significativas entre os grupos foram observadas quanto à idade, ao índice de massa corporal e a história de partos prévios com bebês de baixo peso ao nascer. O Grupo A apresentou maior frequência de periodontite (33,34%) do que o Grupo B (16,22%). P. gingivalis e P. intermedia foram detectados com maior frequência em mulheres com periodontite (74,19% e 88,70%, respectivamente). Conclusão Nessa população, não houve associação entre a presença de patógenos periodontais maternos e a ocorrência de bebês com baixo peso ao nascer.
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INTRODUCTION: Since the 1990s, evidence has been raised that there is an association between maternal periodontal disease and undesirable gestational events, for example low birth weight; this issue is controversial. OBJECTIVE: To evaluate whether there is an association between maternal periodontitis and low birth weight (LBW). METHODS: A case-control study was carried out on 951 mothers that had been cared for by the Brazilian Unified Health System in Petrolina-PE and Juazeiro-BA, Brazil. The case group (n = 269) consisted of mothers of newborns with birth weight <2500 g and a control group (n = 682) of mothers of newborns with birth weight ≥2500 g. An interview was realized, using a questionnaire as well as a full mouth examination to diagnose the periodontal condition. Women who had at least four teeth with probing depth ≥4 mm and clinical attachment loss ≥3 mm, with bleeding on probing at the same site, were diagnosed with periodontitis. The birth weight was obtained through the hospital book record. The main association was evaluated using the multivariate regression model, considering confounders. RESULTS: The frequency of periodontitis was 16.4% (case group) and 17.4% (control group). Periodontitis did not show an association with LBW (ORcrude = 0.92; 95% CI = 0.63-1.35), even after adjustment for the following confounders: maternal age, pre-gestational body mass index, number of pre-natal consultations, number of pregnancies, maternal schooling level, smoking habit during pregnancy and hypertension (ORadjusted = 1.00; 95% CI = 0.61-1.68). CONCLUSION: The findings of this study showed no association between maternal periodontal disease and low birth weight, even after appropriate adjustments for confounding factors.
