Oral hygiene behaviors and periodontitis among patients with chronic diseases and its impact on tooth loss and oral health-related quality of life: a cross-sectional study of data from the ComPaRe e-cohort

Objectives: Little is known about oral hygiene habits of patients suffering from chronic diseases. This study aims to describe oral hygiene behavior (OHB) in terms of tooth brushing and professional scaling frequency among patients with chronic diseases. Secondarily, it aims to assess the association between OHB and periodontitis, tooth loss, and oral health-related quality of life (OHRQoL). Materials and methods: This is a cross-sectional analysis of data of adult participants in the ComPaRe e-cohort. Participants were classified into having good, moderate, and poor OHB according to self-reported frequency of toothbrushing and professional tooth scaling. Periodontitis was assessed using the PEriodontal Screening Score (PESS). Weighted binary regression models were used to estimate the association between OHB and the following outcomes: (i) periodontitis; (ii) number of missing teeth; and (iii) OHRQoL based on the Oral Health Impact Profile-14. Results: Overall, 8553 patients were included in the analyses (52.9% females, mean age of 56.3 ± 17 years). Of these, 2907 (34%), 3953 (46%) and 1693 (20%) were considered as having good, moderate, and poor OHB, respectively. Over half (54.1%) of the patients had a PESS ≥ 5 suggestive for severe periodontitis. Moderate OHB was associated with lower odds of PESS ≥ 5 compared to poor OHB (Adjusted Odds Ratio, OR = 0.81 [95%CI: 0.70–0.92]). Good and moderate OHB were significantly associated with lower odds of ≥ 10 missing teeth (OR = 0.26 [95%CI: 0.21–0.33] and OR = 0.47 [95%CI: 0.4–0.56], respectively) and better OHRQoL than poor OHB. Conclusions: Although, most of patients with chronic diseases reported to have good or moderate OHB, severe periodontitis is highly prevalent among this patient population in France. Clinical relevance: This study describes OHB in a representative sample of patients suffering from one or more chronic diseases and provides an estimate of the prevalence of self-reported severe periodontitis, missing teeth, and OHRQoL.