Analysis on correlative factors of curative effect of root canal therapy in elderly people

Objective:To study the curative effect of root canal therapy in elderly people and the influencing factors of the curative effect. Methods:One hundred and twenty-six teeth from 56 elderly people were examined, which had received root canal therapy over 2 year . The teeth were divided into 3 groups according to post-curing time: 2～3 years group , 4～5 years group and over 6 years group . The curative effect were evaluated based on radiographic assessment by using periapical index (PAI) and clinical examination. Results:The successful rate of root canal therapy in elderly people was 72.2% . There has no significant difference among the 3 groups in the successful rate of root canal therapy . Root canal treated teeth with adequate root canal obturation had a higher successful rate than teeth with inadequate obturation (82.2% vs 47.2%, P0.05) . In the cases with adequate good coronal restoration were associated with lower incidence of apical periodontitis compared with inadequate restorations (25.7% vs 58.4%, P0.05) Obturation. Conclusion:The quality of root filling, coronal restoration and post crown can influence the curative effect of root canal therapy in elderly people .