The results indicate that tooth loss and edentulism were complex phenomena, with intricate predisposing, demographic, enabling and need factors playing a role.

Periodontitis and its relationship with psycho-neuro-immunological variables, such as psychological stress and cortisol, have been little explored. The objective of this study was to evaluate the extent and severity of chronic periodontitis and its association with the levels of salivary cortisol and the scores obtained with a stress questionnaire in a population aged 50 years and over. We studied 235 individuals in a cross-sectional study. They answered the Lipp's Inventory of Stress Symptoms for Adults, were instructed to collect three saliva samples for cortisol analysis, and were examined for evaluation for periodontitis. Based on logistic regression, cortisol levels were positively associated with the following outcomes: means of clinical attachment level (CAL) > = 4 mm [OR = 5.1, 95%CI (1.2, 20.7)]; 30% of sites with CAL > = 5 mm [OR = 6.9, 95%CI (1.7, 27.1)]; and 26% of sites with probing depth > = 4 mm [OR = 10.7, 95%CI (1.9, 54.1)] after adjustment for confounding variables. The results suggest that cortisol levels were positively associated with the extent and severity of periodontitis.

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A systematic review was conducted to assess the relationship between frailty or one of its components and poor oral health. A search strategy was developed to identify articles related to the research question in the PubMed, EMBASE, Cochrane, LILACS, and SciELO databases that were published in English, Spanish, or Brazilian Portuguese from 1991 to July 2013. Thirty-five studies were identified, and 12 met the inclusion criteria, seven of which were cross-sectional and five were cohort studies. Of the 12 articles, five (41.7%) were rated good and seven (58.3%) as fair quality. The published studies applied different oral health and frailty criteria measures. Variations in definitions of outcome measures and study designs limited the ability to draw strong conclusions about the relationship between frailty or prefrailty and poor oral health. None of the studies that were evaluated longitudinally showed whether poor oral health increases the likelihood of developing signs of frailty, although the studies suggest that there may be an association between frailty and oral health. More longitudinal studies are needed to better understand the relationship between frailty and oral health.

Traditional oral health educational actions were effective in reducing plaque, but not gingivitis. There is no long-term evidence in respect of the effectiveness of these interventions in preventing plaque accumulation, gingivitis and dental caries in the school environment.

In the studied population, oral status was associated with the perception of quality of life in general.

The results show that a poorer oral status, represented by having fewer teeth that were not replaced by dental prostheses, was associated with obesity in Southern Brazil older people, suggesting a close relationship between poor oral status and systemic conditions that may have important clinical implications.