International Journal of Prosthodontics and Restorative Dentistry

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VOLUME 14 , ISSUE 2 ( April-June, 2024 ) > List of Articles

ORIGINAL RESEARCH

Comparison of Fracture Resistance among Different Post Placement Strategies and Core Buildup Materials in Endodontically Treated Maxillary Premolars: An In Vitro Study

Shatha A Alshali, Ayman Abulhamael, Hisham Mously, Narmeen Shikdar

Keywords : Composite buildup, Core buildup, Fiber post, Flexural strength, LuxaCore Z, Post and core

Citation Information : Alshali SA, Abulhamael A, Mously H, Shikdar N. Comparison of Fracture Resistance among Different Post Placement Strategies and Core Buildup Materials in Endodontically Treated Maxillary Premolars: An In Vitro Study. Int J Prosthodont Restor Dent 2024; 14 (2):99-104.

DOI: 10.5005/jp-journals-10019-1457

License: CC BY-NC 4.0

Published Online: 29-06-2024

Copyright Statement:  Copyright © 2024; The Author(s).


Abstract

Purpose: To compare the fracture resistance of endodontically treated premolars reinforced by one or two fiber-reinforced composites and different core buildup materials. Materials and methods: A total of 40 double-rooted maxillary premolars were collected and divided into four groups (n = 10/group). After endodontic treatment, the teeth were prepared and received fiber posts as follows: group I—single fiber post with LuxaCore Z as luting cement and core buildup material, group II—two fiber posts with LuxaCore Z as luting cement and core buildup material, group III—single fiber post cemented with RelyX Unicem followed by packable composite as a core buildup material, group IV—two fiber posts cemented with RelyX Unicem followed by packable composite as a core buildup material. The specimens were placed in the universal testing machine for testing of the fracture resistance. Specimens were axially loaded on the center of the occlusal surface. One-way analysis of variance (ANOVA) was done to assess group differences, followed by Tukey's honestly significant difference (HSD) post hoc test for multiple comparisons. Results: Group IV (two fiber posts with resin cement and packable composite resin) had a significantly higher mean fracture resistance (1049.16 ± 125.51 N) compared to group I (874.47 ± 59.94 N), group II (872.16 ± 151.18 N), and group III (979.21 ± 117.45 N). The difference among the groups was statistically significant (p = 0.013). The Tukey's HSD post hoc test results for paired groups revealed that the fracture resistance of group IV was significantly higher than group I (p = 0.030) and group II (p = 0.027). Conclusion: The restoration of endodontically treated double-rooted premolars using two fiber posts luted with resin cement, followed by packable composite buildup, showed promising performance regarding fracture resistance.


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