부산대학교 도서관

Health interventions based on cognitive theories effectively bring about behaviour change. Therefore, the present study aimed to assess the determinants of oral hygiene behaviour (OHB) based on the theory of planned behaviour (TPB) among patients with moderate and severe periodontitis. A cross‐sectional study was conducted using a 47‐item self‐report questionnaire to evaluate oral health knowledge (OHK), expected social outcomes (ESO) and OHBbased on the variables of TPB[attitude (ATT), social norms (SN) and perceived behavioural control (PBC)] of patients with moderate and severe periodontitis. Analysis of variance was used for comparison between the parameters. Regression analyses identified the significant determinants of OHB. A total of 543 patients meeting the inclusion criteria were included. ESO(B= 0.04) and OHK(B= 0.14) significantly predicted intention to perform OHB. None of the TPBvariables significantly predicted OHB. Apart from ESOand OHK,which were significant predictors for both genders, ATT(β = 0.22) additionally predicted OHBamong men. Also, for university graduates, ESO(β = 0.13) and OHK(β = 0.17) significantly predicted OHB. Lastly, OHBshowed a significant and positive correlation with all the parameters (P< 0.05). The study concludes that the TPBmodel facilitates the evaluation of psychosocial determinants of OHBamong patients with periodontitis. Also, a significant relationship between gender, OHBand variables of TPBfurther highlights the importance of patient‐focused preventive oral health care education.