Survival Outcomes of Crowns with and without Repaired Endodontic Access Cavities: A Retrospective Propensity Score Matching Study
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Issued Date
2025-01-01
Resource Type
eISSN
25480839
Scopus ID
2-s2.0-105016875506
Journal Title
European Endodontic Journal
Volume
10
Issue
5
Start Page
374
End Page
385
Rights Holder(s)
SCOPUS
Bibliographic Citation
European Endodontic Journal Vol.10 No.5 (2025) , 374-385
Suggested Citation
Sinkanarak P., Osiri S., Chotvorrarak K. Survival Outcomes of Crowns with and without Repaired Endodontic Access Cavities: A Retrospective Propensity Score Matching Study. European Endodontic Journal Vol.10 No.5 (2025) , 374-385. 385. doi:10.14744/eej.2025.26122 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/112367
Title
Survival Outcomes of Crowns with and without Repaired Endodontic Access Cavities: A Retrospective Propensity Score Matching Study
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Author's Affiliation
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Abstract
Objective: This retrospective study aimed to compare the survival outcomes between crowns with repaired endodontic access cavities and intact crowns and to identify factors that influence restoration longevity. Methods: Clinical records of patients who underwent root canal treatment through existing crowns (crowns with repaired access cavities, CRA) or received crowns after root canal treatment (intact crowns, IC) between 2012 and 2023 were analysed. A 1:1 propensity score matching was applied based on age, sex, tooth type, and crown type. The outcomes of the matched cases were classified as survival or non-survival. Kaplan–Meier anal- ysis and log-rank tests were used to compare outcomes between the two groups over time. For CRA, multivari- able Cox proportional hazards regression analysis was conducted to identify potential predisposing factors. Results: Among 608 eligible endodontically treated teeth, 120 CRA and 488 IC met the inclusion criteria. After matching, 120 samples per group were analysed. The survival rate was significantly lower for CRA (85.8%) than for IC (91.7%) (p=0.004). Occlusal parafunctional habits or interferences were the only significant factors affecting CRA survival. Conclusion: CRA demonstrated lower survival rates than IC, with occlusal parafunctional habits or interfer- ences as key factors influencing their longevity.