This pilot study aimed to evaluate the influence of smoking on clinical and microbiological parameters after nonsurgical periodontal therapy. Forty-eight subjects were grouped into smokers (SM, n = 24) and nonsmokers (NS, n = 24) and paired according to gender, age, ethnicity, and periodontal status. Both groups received oral hygiene education and scaling and root planing. Clinical evaluation was performed using plaque index (PI), bleeding on probing (BOP), pocket probing depth (PPD), gingival recession (GR), and clinical attachment level (CAL) before instrumentation (baseline) and at 3 and 6 months. The prevalence of Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Candida albicans, Candida glabrata, Candida tropicalis, and Candida dubliniensis in subgingival biofilm was determined by polymerase chain reaction. The data were statistically analyzed considering p < 0.05. Clinical conditions improved between baseline and 3 months after periodontal treatment. However, NS had a better clinical response, presenting greater PPD reduction and CAL increase in comparison to SM. Periodontal treatment reduced the levels of P. gingivalis, A. actinomycetemcomitans, and T. forsythia individually after 3 months for the NS group and after 6 months for both groups. The prevalence of Candida species was markedly higher in SM than in NS at all time points evaluated. Periodontopathogens associated or not with C. albicans or C. dubliniensis were more prevalent in SM than in NS at baseline and after 3 months. It was concluded that smoking impairs clinical and microbiological responses to periodontal therapy. Periodontopathogens combined or not with some Candida species are resistant to short-term periodontal therapy in SM.

Objective: the aim of this study was to evaluate, through literature review, clinical aspects (plaque index, gingival index, probing depth, gingival recession and clinical attachment level) and microbiological (qualitative and quantitative presence of periodontal pathogens) in smokers patients and the response to periodontal therapy. Material and Methods: it was selected scientific articles published between the years 1978 and 2014. We were selected scientific articles from MEDLINE, PUBMED and LILACS databases. Results: there are controversies between tobacco and clinical and microbiological parameters. Conclusion: based on the evaluated studies we can conclude that there are significant clinical and microbiological differences in smoking patients and impaired response to periodontal therapy.

Porphyromonas gingivalis is one of the most important Gram-negative anaerobe bacteria involved in the pathogenesis of periodontitis. P. gingivalis has an arsenal of specialized virulence factors that contribute to its pathogenicity. Among them, fimbriae play a role in the initial attachment and organization of biofilms. Different genotypes of fimA have been related to length of fimbriae and pathogenicity of the bacterium. Objectives The aim of this study was to identify 5 types of fimA genotype strains in smokers and nonsmokers with periodontitis, before and after periodontal therapy. Material and Methods Thirty-one patients with periodontitis harboring P. gingivalis were selected: 16 nonsmokers (NS) and 15 smokers (SM). Clinical and microbiological parameters were evaluated at baseline and 3 months after periodontal treatment, namely: plaque index, bleeding on probe, probing depth, gingival recession and clinical attachment level. The frequency of P. gingivalis and fimA genotype strains were determined by polymerase chain reaction. Results Type I fimA was detected in the majority of SM and NS at baseline, and the frequency did not diminish after 3 months of treatment. The frequency of type II genotype was higher in SM than NS at baseline. After 3 months, statistical reduction was observed only for types II and V fimA genotypes in SM. The highest association was found between types I and II at baseline for NS (37.5%) and SM (53.3%). Conclusion The most prevalent P. gingivalis fimA genotypes detected in periodontal and smoker patients were genotypes I and II. However, the presence of fimA genotype II was higher in SM. Periodontal treatment was effective in controlling periodontal disease and reducing type II and V P. gingivalis fimA .

The aim of this study was to evaluate how the oral hygiene condition can influence the Oral Health-Related Quality of Life (OHRQoL) of preschoolers and their families. A cross-sectional study was conducted involving 446 children aged 2 to 6 years from public schools located in Rio de Janeiro, Brazil. The groups were dichotomized: regular/poor oral hygiene condition (RPOH) or good oral hygiene condition (GOH). The caregivers answered the Brazilian version of the Early Childhood Oral Health Impact Scale (B-ECOHIS). The average score in the RPOH group was 6.36 (6.35 DP) and GOH was 4.43 (5.35 SD) ( P < .01). In the child subscale, the average of the RPOH and GOH group were, respectively, 4.12 (4.14 DP) and 3.13 (3.66 DP) ( P = .01). In the family subscale, RPOH and GOH group were, respectively, 2.24 (3.12 DP) and 1.29 (2.52 DP) ( P = .01). RPOH group had the greatest impact on OHRQoL.

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