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This study tested a self-determination theory (SDT) process model of oral health and subjective dental well-being. The results showed that: (1) patients’ perceptions of autonomy-supportive dental professionals were significantly positively predictive of patients’ psychological needs satisfaction in treatment; (2) needs satisfaction was significantly related to perceived dental competence (positive), autonomous motivation (positive), and controlled motivation (negative) for dental care; (3) perceived competence was significantly positively, and controlled motivation was significantly negatively associated with self-rated oral health and oral-health-related quality of life; (4) autonomous motivation for dental treatment was significantly positively associated with valuing continued dental treatment; and (5) the three oral-healthrelated variables were all significantly positively linked to subjective dental wellbeing. A structural equationmodel supported the SDT process model.

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