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https://repositorio.ufu.br/handle/123456789/49302| Document type: | Trabalho de Conclusão de Curso |
| Access type: | Acesso Embargado |
| Embargo Date: | 2028-06-25 |
| Title: | Self-curing composite resin core and resin cement for restoring endodontically treated teeth with 3D-printed resin crown – fatigue survival and finite element analysis |
| Alternate title (s): | Núcleo de resina composta autopolimerizável e cimento resinoso para restauração de dentes tratados endodonticamente com coroa de resina impressa em 3D – sobrevivência à fadiga e análise de elementos finitos |
| Author: | Santos, Maria Eduarda Martin dos |
| First Advisor: | Soares, Carlos José |
| First coorientator: | Lozada, Maribi Isomar Terán |
| First member of the Committee: | Soares, Carlos José |
| Second member of the Committee: | Zancopé, Karla |
| Third member of the Committee: | Lima, João Henrique Ferreira Lima |
| Fourth member of the Committee: | Benoni, Guilherme Mendonça |
| Summary: | Statement of problem. The fatigue behavior and stress distribution of a simplified restorative protocol using self-cured resin composite for fiber post cementation, core build-up, and crown cementation remain unclear. Purpose. To evaluate the fatigue survival, failure mode, and stress distribution of endodontically treated = incisors restored using a self-cured resin composite or dual- polymerizing resin-core materials for fiber posts cementation, core build-ups, and 3D-printed resin crowns cementation. Material and methods. Sixty bovine incisors were endodontically treated and randomly assigned to 4 groups (n=15) according to the material used for fiber post cementation, core build-up, and crown cementation: Stela Automix; Clearfil DC Core Plus; Rebilda DC; and LuxaCore Z Dual. After post cementation, standardized core build-up, tooth preparation, digital scanning, and generation of 3D-printed resin crowns, the specimens were subjected to step-stress cyclic fatigue at 5 Hz, starting at 50 N and increasing by 100 N every 15 000 cycles until failure. Failure mode was assessed by transillumination and digital radiography and illustrated by scanning electron microscopy. Three-dimensional finite element models were created to evaluate modified von Mises stress distribution. Fatigue survival was analyzed with Kaplan-Meier and log-rank tests; fatigue failure load and cycles to failure were analyzed with 1-way ANOVA (α=.05). Results. No significant differences were detected among groups for fatigue failure load or cycles to failure by 1-way ANOVA (P>.05). Most failures were repairable. Stela Automix and Clearfil DC Core Plus showed only repairable failures, whereas LuxaCore Z Dual and Rebilda DC showed isolated catastrophic failures. Finite element analysis showed a similar global stress pattern among groups, with higher stress concentration in the cervical region and post/core interface. Stela Automix showed lower and more localized stress in the fiber post region. Conclusions. The self-cured resin composite and dual-polymerizing resin-core materials provided comparable fatigue failure loads and predominantly repairable failure patterns when used for post cementation, core build-up, and crown cementation. Stela Automix showed similar performance and more favorable stress distribution in the post region, suggesting potential applicability as a simplified restorative material for endodontically treated teeth. |
| Keywords: | Endodontically treated teeth Glass fiber post Self-cured composite resin Fatigue survival Finite element analysis |
| Area (s) of CNPq: | CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
| Language: | eng |
| Country: | Brasil |
| Publisher: | Universidade Federal de Uberlândia |
| Quote: | SANTOS, Maria Eduarda Martin. Self-curing composite resin core and resin cement for restoring endodontically treated teeth with 3D-printed resin crown – fatigue survival and finite element analysis. 2026. 57 f. Trabalho de Conclusão de Curso (Graduação em Odontologia) - Universidade Federal de Uberlândia, Uberlândia, 2026. |
| URI: | https://repositorio.ufu.br/handle/123456789/49302 |
| Date of defense: | Jun-2026 |
| Appears in Collections: | TCC - Odontologia |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Self-curingCompositeResin.pdf Until 2028-06-25 | TCC | 2.73 MB | Adobe PDF | View/Open Request a copy |
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