Objective To evaluate the association between psoriasis (PSO), psoriatic arthritis (PsA) and periodontitis (PE), and the Oral Health-Related Quality of Life (OHRQoL) impacts on individuals with psoriatic disease’s daily activities compared to the non-psoriatic ones. Materials & Methods 296 individuals with psoriatic disease (PSO n= 210, APS n= 86) (cases) and 359 without these diseases (controls) were included. Complete periodontal examinations and collection of variables of interest were performed. The Brazilian version of the Oral Impacts on Daily Performance (OIDP) instrument was applied. Results The prevalence of PE was higher in PsA (57.0%; OR=2.67 95%CI 1.65–4.32; p<0.001) than in PSO (34.3%; OR=1.05 95% CI 0.73–1.51; p<0.001) compared to controls (33.1%). Both PsA and PSO groups showed more sites and teeth with 4-6mm probing depth (PD) and had higher OIDP scores than controls (p<0.001), thus indicating worse self-reported quality of life. PE, PSO+PE and consumption of alcohol/anxiolytics significantly influenced OHRQoL (p<0.05). The influence of periodontal parameters on OHRQoL was observed for the presence of PE; PD >6 mm; clinical attachment level >6 mm; higher plaque index, % sites and teeth with bleeding on probing (p<0.05). Conclusion Negative impacts of PE on the OHRQoL were demonstrated. The ones having PSO and especially PsA and PE presented significantly worse indicators.

The authors have declared no competing interest.

The author(s) received no specific funding for this work.

I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained.

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The details of the IRB/oversight body that provided approval or exemption for the research described are given below:

This study was approved by the Research Ethics Committee from the Universidade Federal de Minas Gerais – Brazil (#CAAE 20156019.0.0000.5149).

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The data underlying the results presented in the study are available in the University's Postgraduate Department Universidade Federal de Minas Gerais. Contact information: posgrad@odonto.ufmg.br https://www.odonto.ufmg.br/posgrad/

https://www.odonto.ufmg.br/posgrad/