Avaliação clínica e microbiológica periodontal de crianças e adolescentes sob terapia ortodôntica com aparelhos fixos ou removíveis

O objetivo deste estudo foi avaliar os parâmetros clínicos e microbiológicos periodontais de crianças e adolescentes sob terapia ortodôntica com aparelho fixo ou removíveis. Trinta indivíduos (14,5l1,7 anos - Grupo FIX) que utilizavam aparelhos fixos e 18 que utilizavam aparelho extra bucal removível ou placa de Hawley há pelo menos 6 meses (9,6 l 1,5 anos - Grupo REM) foram comparados a dois grupos controle, constituídos por indivíduos da mesma idade (14,2 l 1,7 anos - Grupo C-FIX e 9,3 l 1,9 anos - Grupo C-REM) que não utlizavam esses dispositivos. Foi analisada a presença de placa bacteriana visível (IP), sangramento gengival (IG), profundidade de sondagem (PS) e perda de inserção clínica (PIC). Amostras de placa bacteriana subgengival foram coletadas e analisadas por meio de sondas de oligonucleotídeos para A. actinomycetemcomitans (Aa), C. rectus, Capnocytophaga sp. E. corrodens, F. nucleatum, F. vincentii, M. micros, Neisseriaceae., P. gingivalis, P. intermedia, espiroquetas, T. forsythensis e Treponema sp. Diferenças significantes (p<0,05) foram observadas entre os grupos FIX e C-FIX quanto aos parâmetros IP (66,8% e 47,7%), IG (43% e 15,6%), e para as prevalências de todas as bactérias avaliadas, exceto as da familia Neisseriaceae. Entre dentes bandados e seus análogos no grupo controle foram encontradas diferenças significantes para os parâmetros PV (80,3% e 58,8%), SM (64,3% e 20,6%) e PS (2,9 mm e 2,5 mm), respectivamente. Entre os grupos REM e C-REM, essas diferenças também foram observadas para IP (58,7% e 14,3%) e IG (19,8% e 8,8%) e para as prevalências de Aa, C. rectus, E. corrodens, Neisseriaceae e espiroquetas. Entre os dentes retentores de grampo e seus análogos no grupo controle verificou-se diferenças significantes para IP (77,8% e 31,3%). Não foi verificado aumento da PS associado a PIC. Também foi avaliada a... .The purpose of this study was to compare clinical and microbiological parameters in children and adolescents with and without fixed or removable orthodontic appliances. Thirty subjects (mean age 14.5l1.7 years) treated with fixed appliances and 18 treated with removable appliances for at least 6 months were selected as test groups, FIX and REM, respectively. The control groups were comprised of 30 subjects (mean age 14.2l1.7 years - Group C-FIX) and 18 subjects (mean age 9.3l1.9 years - Group C-REM) that did not receive orthodontic treatment. Clinical evaluations were made for plaque index (PI), gingival index (GI), probing depth (PD) and clinical attachment loss (CAL). Subgingival plaque samples were collected from the patients and analyzed by oligonucleotide probes for the presence of A. actinomycetemcomitans (Aa), C. rectus, Capnocytophaga sp. E. corrodens, F. nucleatum, F. vincentii, M. micros, Neisseriaceae., P. gingivalis, P. intermedia, spirochetes, T. forsythensis and Treponema sp. Additionally, two subgingival dental plaque samples from one subject of each test group were further analyzed by cloning and sequencing the amplified 16S rDNA. Significant differences were noted between FIX and C-FIX for PI (66.8% versus 47.7%), GI (43.8% versus 15.6%) and between the banded teeth in the FIX group and the analogous teeth in the C-FIX group for PI (80.3% versus 58.8%), GI (64.3% versus 20.6%) and PD (2.9 mm versus 2.5 mm). Significant differences were noted between FIX and C-FIX for all targeted bacteria but Neisseriaceae. Results: Significant differences were also noted between REM and C-REM for PI (58.7% versus 14.3%) and GI (19.8% versus 8.8%) and between the clasped teeth in the test group and the analogous teeth in the control group for PI (77.8% versus 31.3%). Significant differences were noted between the REM and C-REM for Aa... (Complete abstract, click electronic address below).Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Estudo comparativo das condições clínicas periodontais e da prevalência de periodontopatógenos suspeitos entre mães e filhos

Os objetivos deste estudo foram comparar as condições clínicas periodontais e a prevalência de periodontopatógenos entre mulheres com periodontite crônica severa e seus filhos. Participaram deste estudo vinte mães com idade média de 36,6 anos (desvio padrão = 6,7) e um filho de cada uma destas com idade média de 11,8 anos (desvio padrão = 3,4). Foram analisadas as correlações entre a presença de placa visível (PV), sangramento marginal (SM), profundidade de sondagem >= 6mm e nível de inserção clínico >= 5mm das mães e PV e SM dos filhos e a associação da extensão e severidade da doença periodontal nas mães com a presença de perda de inserção clínica de 4 mm nos filhos. A avaliação microbiológica foi realizada através de cultura bacteriana de amostras colhidas de sítios periodontais para comparar a prevalência de Porphyromonas gingivalis, Prevotella sp., Fusobacterium sp., Peptostreptococcus micros, Capnocytophaga sp., Campylobacter sp. e Eikenella corrodens nas mães e nos filhos. Não foi observada nenhuma correlação significante entre os parâmetros clínicos das mães e dos filhos assim como não foi encontrada associação significante entre a presença de perda da inserção clínica de 4 mm nos filhos e a extensão e severidade da doença das mães. A presença dos periodontopatógenos nas mães não esteve associada com a presença destes em seus filhos.The aims of this study were to compare the periodontal clinical conditions and the prevalence of periodontopathogens in mothers with chronic servere periodontitis and their children. Twenty women (mean age = 36,6; SD = 6,7) and one child of each (mean age = 11,8; SD = 3,4) participated in this study. Correlations between the following clinical parameters of the mothers: presence of visible plaque (VP), marginal bleeding (MB), probing depth >= 6 mm and clinical attachment loss >= 5mm and the presence of VP and MB on their sons were assessed, as well as the association between the extent and severity of the periodontal disease present in the mothers with the presence of CAL of at least 4 mm in the children. The microbiological evaluation was performed by culturing samples of subgingival bacterial plaque collected both from mothers and children in order to compare the prevalence of Porphyromonas gingivalis, Prevotella sp., Fusobacterium sp., Peptostreptococcus micros, Capnocytophaga sp., Campylobacter sp. and Eikenella corrodens. No significant correlations were found neither between clinical parameters of mothers (VP, MB, PD, CAL) and children (VP, MB), nor between the extent and severity of periodontal disease in the mothers and presence of CAL of at least 4 mm in the children. The prevalence of any of the periodontopathogens screened in this study in the plaque samples from mothers was also not associated with its presence in plaque samples from their children.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Transmission of Aggregatibacter actinomycetemcomitans between Brazilian women with severe chronic periodontitis and their children

This study evaluated the transmission of Aggregatibacter actinomycetemcomitans (Aa) in women with severe chronic periodontitis and their children. Thirty women (mean age = 36.1±6.0 years) who were mothers of at least one child aged 7 to 16 years were enrolled. In order to investigate mother-child transmission of Aa, the children were also evaluated when their mothers were colonized by the bacterium. Subgingival plaque samples of each woman were collected from 3 sites (mean probing depth of 7.3±1.2 mm and mean clinical attachment level of 7.9±1.5 mm) and pooled in reduced transport fluid (RTF). These samples were processed, inoculated onto TSBVagar selective medium and incubated at 37°C in microaerophilic atmosphere for 5 days. Aa was identified on the basis of colony morphology, Gram staining, catalase and oxidase reactions. Aa was found in 8 out of 30 women. Therefore, 8 children from these women (mean age= 12 ± 3.7 years) were evaluated, but Aa was found only in 2 of them. Aa strains of the two mother-child pairs were evaluated by arbitrarily-primed polymerase chain reaction (AP-PCR), although it was not found similarity between the amplitypes of each pair. No Aa transmission was found between Brazilian women with severe chronic periodontitis and their children