Study on the Effect and Prognostic Factors of Zirconia All-ceramic Crown Combined with Glass Fiber Oost in the Restoration of Tooth Defects

Zhang Junyi; Zhu Zhimin

doi:10.3969/j.issn.1004-5775.2025.08.009

Abstract：Objective:To investigate the effect and prognostic factors of zirconia all-ceramic crown combined with glass fiber post in the repair of tooth defects.Methods:600 patients with dental defects admitted to the hospital from January 2016 to February 2023 were selected for retrospective analysis.Among them,100 patients who implemented metal pile cobalt-chromium porcelain crown restoration were included in the control group,and 500 patients who implemented zirconia all-ceramic crown combined with glass fiber pile restoration were included in the observation group.The success rate and satisfaction of the two groups were compared,and the masticatory function and aesthetic score of the two groups were compared before and after the repair.Then,25 patients who failed to repair tooth defects were divided into failure group,and the other 475 patients were divided into success group.Logistic regression analysis was used to analyze the multiple factors affecting the prognosis of tooth defects.Results:The surgical success rate of the observation group was significantly higher than that of the control group,and the total satisfaction rate of the observation group was significantly higher than that of the control group(x2=5.050,6.730;P＜0.05).The masticatory function and aesthetic score of the two groups were increased 3 and 6 months after repair,and the observation group was higher than the control group(t=5.572,9.498,8.691,7.649;P＜0.05).There were significant differences in oral hygiene habits,repair methods,percentage of enamel in the bonding surface and poor plaque control between the successful group and the failure group(x2=7.751,59.066,75.219;P＜0.05).Logistic regression analysis showed that poor oral hygiene habits,percentage of enamel in adhesive surface ≥50％and poor plaque control were the factors affecting the failure of dental defect repair.Conclusion:Zirconia porcelain crown combined with glass fiber post can improve the masticatory function and aesthetic evaluation of patients.Poor oral hygiene habits,the percentage of enamel in the adhesive surface ≥50％and poor plaque control are the factors affecting the failure of dental defect repair.