Nicole Martino1, Caroline Truong1, Arthur E Clark2, Edgar O'Neill3, Shu-Min Hsu4, Dan Neal5, Josephine F Esquivel-Upshaw6. 1. Graduate Prosthodontic resident, Graduate Prosthodontics Program, Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, Fla. 2. Professor, Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, Fla. 3. Clinical Associate Professor, Restorative Dental Sciences, Graduate Prosthodontics Program, University of Florida College of Dentistry, Gainesville, Fla. 4. Research Associate, Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, Fla. 5. Senior Statistician, Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Fla. 6. Associate Professor, Restorative Dental Sciences, University of Florida College of Dentistry, Division of Prosthodontics, Gainesville, Fla. Electronic address: jesquivel@dental.ufl.edu.
Abstract
STATEMENT OF PROBLEM: The clinical survival of different types of post-and-core systems requires assessment. PURPOSE: The purpose of this retrospective clinical study was to evaluate the clinical survival rate (CSR) of custom-fabricated cast metal and prefabricated (both metal- and fiber-reinforced composite resin post) post-and-cores as a function of patient- and restoration-related variables. MATERIAL AND METHODS: A retrospective analysis was conducted on electronic charts indicating that these patients had received some type of post-and-core between January 2003 and January 2018. A total of 754 records were included in the analysis based on the inclusion criteria. Data were analyzed by using the Kaplan-Meier and Cox proportional hazards analysis. RESULTS: Kaplan-Meier analysis demonstrated the mean survival time for each group to be 12.0 years for fiber-reinforced composite resin posts, 11.8 years for cast metal post-and-cores, and 10.2 years for prefabricated metal posts. Although the mean survival time differed by 1.8 years among groups, with prefabricated metal posts having a slightly higher risk of failure, this effect was not statistically significant (P=.067). The effect of post type also failed to reach significance when controlling for patient demographics and post position in a Cox proportional hazards analysis (P=.106). However, the Cox model did show that survival was associated with tooth position (P=.003), cement (P=.021), and type of restoration (P<.001). CONCLUSIONS: Analysis showed no evidence that post-and-core survival was significantly associated with 3 types of post-and-cores (custom-fabricated metal, prefabricated metal, and prefabricated fiber-reinforced composite resin). The percentage of root in the bone, tooth position, cement, and type of restoration, however, were significantly associated with survival.
STATEMENT OF PROBLEM: The clinical survival of different types of post-and-core systems requires assessment. PURPOSE: The purpose of this retrospective clinical study was to evaluate the clinical survival rate (CSR) of custom-fabricated cast metal and prefabricated (both metal- and fiber-reinforced composite resin post) post-and-cores as a function of patient- and restoration-related variables. MATERIAL AND METHODS: A retrospective analysis was conducted on electronic charts indicating that these patients had received some type of post-and-core between January 2003 and January 2018. A total of 754 records were included in the analysis based on the inclusion criteria. Data were analyzed by using the Kaplan-Meier and Cox proportional hazards analysis. RESULTS: Kaplan-Meier analysis demonstrated the mean survival time for each group to be 12.0 years for fiber-reinforced composite resin posts, 11.8 years for cast metal post-and-cores, and 10.2 years for prefabricated metal posts. Although the mean survival time differed by 1.8 years among groups, with prefabricated metal posts having a slightly higher risk of failure, this effect was not statistically significant (P=.067). The effect of post type also failed to reach significance when controlling for patient demographics and post position in a Cox proportional hazards analysis (P=.106). However, the Cox model did show that survival was associated with tooth position (P=.003), cement (P=.021), and type of restoration (P<.001). CONCLUSIONS: Analysis showed no evidence that post-and-core survival was significantly associated with 3 types of post-and-cores (custom-fabricated metal, prefabricated metal, and prefabricated fiber-reinforced composite resin). The percentage of root in the bone, tooth position, cement, and type of restoration, however, were significantly associated with survival.
Authors: Sıla Nur Usta; Begüm Cömert-Pak; Eda Karaismailoğlu; Ayhan Eymirli; Derya Deniz-Sungur Journal: Int J Environ Res Public Health Date: 2022-02-04 Impact factor: 3.390