Objective: to analyze the perception of caregivers of elderly persons regarding their own oral health care and that of the elderly individuals. Method: a descriptive-exploratory study with a qualitative approach was carried out. Semi-structured interviews with 13 caregivers were conducted, recorded and transcribed, and the Content Analysis technique was applied. Results: All respondents were informal caregivers, most of whom were female, aged over 50, married, had some degree of kinship with those receiving care, an incomplete elementary school education and no other occupation or job. After analyzing the interviews, the data were grouped into the following categories: a) home visits and health professionals; b) caregiver experience and care of the elderly; and c) the caregiver and their self-care. Conclusion: knowledge of caregivers' perception of their own oral health and that of dependent/semi-dependent elderly persons assists in planning, promotion, prevention and health recovery. The work of a multi-professional team is therefore essential in the seeking out and instruction of these individuals.

Photodynamic therapy (PDT) is a promising treatment for oral candidoses. Its use as an alternative to antifungals prevents several adverse effects, including microbial resistance. However, most PDT protocols do not employ devices and consumables commonly available in dental practice, thus influencing treatment affordability. This study aimed to determine the efficacy of a PDT method based on light curing units' blue LEDs combined to a plaque-disclosing composition (5% erythrosine) against C. albicans in culture and in a murine model of oral candidosis. Standard and resistant fungal strains were tested in vitro in planktonic and biofilm forms. PDT (pre-irradiation time periods: 30 and 60 s; irradiation time: 3 min) was compared to control conditions without light and/or erythrosine. Mice with induced oral candidosis (n = 40) randomly received PDT or similar control conditions with subsequent C. albicans count. These mice underwent histological analysis, as well as 12 healthy mice submitted to experimental treatments. PDT completely inactivated C. albicans planktonic cells and biofilm. Control conditions presented minor differences (ANOVA, p < 0.05), with mean values ranging from 5.2 to 6.8 log10 (UFC/mL). Infected mice presented no significant difference in C. albicans counts consequent to treatments (ANOVA, p = 0.721), although the PDT protocol was able to enhance the inflammatory infiltrate in healthy mice. It can be concluded that the tested PDT protocol can inactivate C. albicans but still needs further investigation in order to achieve efficacy and safety.