The prevalence and socio-behavioural and clinical covariates of oral health related quality of life in Ugandan mothers with and without HIV-1.

Background: There is limited evidence regarding oral health related quality of life of HIV positive populations in sub-Saharan Africa. Focusing HIV positive- and HIV negative Ugandan mothers, this study assessed the influence of HIV status on oral health related quality of life in terms of oral impacts on daily performances, whilst adjusting for clinical- and socio-behavioural factors. We also examined whether any association of clinical and socio-behavioural factors with oral impacts on daily performances vary according to mothers' HIV status.

Methods: This cross-sectional study used data from a trial (n = 164) and a comparison group (n = 181). The trial comprised of mothers with HIV-1 participating in the ANRS 121741-PROMISE-PEP-trial (NCT00640263) conducted between 2009 and 2013 and from the ANRS 12341-PROMISE-PEP-M&S follow-up study conducted in 2017. The comparison group comprised of HIV negative mothers recruited in 2017. Interviews and clinical oral examinations were performed. The oral health related quality of life was assessed using the oral impacts on daily performances frequency scale. Caries experience and gingival bleeding were assessed using the World Health Organization's Decayed, Missed and Filled teeth indices and community periodontal index. Logistic and negative binomial regression analyses were performed.

Results: 29% of HIV-1 positive and 32% among the comparison reported any oral impact on daily performance. In adjusted logistic regression analysis, HIV status was not significantly associated with oral impacts on daily performances. Mother's self-reported oral health, caries experience, gingival bleeding and oral health related quality of life of their children were independently associated with oral impacts on daily performances. Corresponding prevalence ratios and 95% confidence intervals were: 0.3 (0.2-0.6), 1.8 (1.0-3.2), 1.1 (1.0-1.1), and 2.1 (1.1-4.3). No significant interaction between HIV status and covariates were observed.

Conclusions: Oral health related quality of life was substantially impaired in Ugandan mothers but did not discriminate between HIV positive and negative participants. Mothers with impaired oral health related quality of life were more likely to have dental caries and children with impaired oral health related quality of life. HIV positive and negative mothers in Uganda deserve special attention regarding their oral disease and quality of life status.