Abstract: Objective To study the effect of quality chain nursing intervention on oral health behavior and nursing satisfaction in elderly patients undergoing implant restoration. Methods A total of 180 elderly patients undergoing implant restoration in our hospital from October 2024 to October 2025 were selected as the study subjects. They were randomly divided into a control group and a study group, with 90 cases in each group. The control group received routine nursing intervention, while the study group received quality chain nursing. Oral health behavior, implant outcomes, nursing satisfaction, and complication rates were compared between the two groups. Results After nursing, the scores for brushing once in the morning and evening, rinsing promptly after meals, and using the Bass brushing method were all higher than before nursing, and the study group was higher than the control group (P < 0.05); the nursing satisfaction in the study group was 96.67%, higher than 82.22% in the control group (P < 0.05); scores for comfort, aesthetics, and mastication in the study group were higher than those in the control group (P < 0.05); the complication rate in the study group was 5.56%, lower than 12.22% in the control group (P < 0.05). Conclusion Quality chain nursing intervention in elderly patients undergoing implant restoration can promote the development of oral health behaviors, improve implant outcomes and nursing satisfaction, and reduce the incidence of complications, showing relatively ideal nursing effects.