ABSTRACT
Purpose: The objective of this study was to evaluate the prevalence of Porphyromonas gingivalis (Pg) and its filmA II genotype in a sample of Brazilian patients with generalized aggressive periodontitis (GAgP) and to correlate the presence of each pathogen/genotype eith clinical parameters. Methods: We used polymerase chain reaction (PCR) to evaluate the presence of Pg and filmA II genotype in subgingival plaque samples collected from the deepest site of 45 Brazilian patients aged 15-40 years with GAgP and correlated findings with age and clinical parameters (plaque index, gingival bleeding index, probing depth and clinical attachment loss). Results: Pg was identified in 64.4% patients. FilmA II genotype was present in 82.6% of Pg-positive patients. The presence of Pg and filmA II genotype was significantly associated with greater clinical attachment loss at the sampled periodontal site. Pg-positive patients were slightly older than Pg-negative patients. Conclusions: Pg and filmA II genotype were highly prevalente in Brazilian patients with GAgP. Pg was more commonly observed in slightly older individuals and in sites with more clinical attachment loss. (AU)
Subject(s)
Humans , Male , Female , Adolescent , Adult , Aggressive Periodontitis , Fimbriae, Bacterial , Porphyromonas gingivalis , Polymerase Chain ReactionABSTRACT
Este trabalho avaliou a padronização de duas marcas comerciais de sondas periodontais milimetradas tipo Williams, comparando-as entre si. Foram utilizadas 60 sondas, sendo 30 usadas e 30 novas - dez (n=10) da marca Golgran/Brasil® e vinte (n=20) da marca Trinity®, em cada grupo. As marcações do terceiro e quinto milímetros foram analisadas com auxílio de um paquímetro digital e uma lupa sobre um negatoscópio, mantendo as sondas sempre na mesma posição. As sondas novas e usadas das duas marcas comerciais apresentaram distorções nas marcações. Porém, houve uma diferença estatisticamente significante entre elas (p<0,05). Independente do tempo de uso, as duas marcas comerciais apresentaram variações em relação ao valor considerado como padrão. Entretanto, a marca Trinity® demonstrou medida mais precisa e marcações mais definidas, favorecendo sua indicação para uso clinico.