| Summary: | Aim: To examine whether a healthy diet based on nutrient recommendations is associated with periodontal condition in smokers. Material and Methods: Daily smokers from the cross-sectional Health 2000 Survey (BRIF 8901) in Finland were analysed in two age groups (30–49 and 50–79 years, n = 704 and 267) and according to the level of oral hygiene. Periodontal condition was measured as the number of sextants with gingival bleeding and teeth with ≥4 mm deepened periodontal pockets. Information on nutrition was collected by a validated food frequency questionnaire and measured using the Baltic Sea Diet Score (BSDS) and the Recommended Finnish Diet Score (RFDS). Results: In the total study population, no association between the scores and periodontal condition was observed. Among 30- to 49-year-old participants with good oral hygiene, diet scores associated inversely with the number of teeth with deepened periodontal pockets (p =.078 (BSDS) and p =.027 (RFDS)). Conclusions: In a representative sample of Finnish adults who smoke, a healthy diet was not associated with periodontal condition. Among a younger age group with good oral hygiene, a healthy diet associated with better periodontal condition. Age and oral hygiene appeared to modify the association between diet and periodontal condition. © 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
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