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Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study

OBJECTIVES: The present study aimed to assess the effect of ferrule location on fracture resistance of maxillary premolars. MATERIALS AND METHODS: A total of 72 extracted human maxillary premolars were selected and randomly assigned to six groups (n = 12 in each) considering ferrule location: circum...

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Autores principales: Koosha, Sara, Jebelizadeh, Mahdieh S., Mostafavi, Azam S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10432005/
https://www.ncbi.nlm.nih.gov/pubmed/37593681
http://dx.doi.org/10.1155/2023/9513804
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author Koosha, Sara
Jebelizadeh, Mahdieh S.
Mostafavi, Azam S.
author_facet Koosha, Sara
Jebelizadeh, Mahdieh S.
Mostafavi, Azam S.
author_sort Koosha, Sara
collection PubMed
description OBJECTIVES: The present study aimed to assess the effect of ferrule location on fracture resistance of maxillary premolars. MATERIALS AND METHODS: A total of 72 extracted human maxillary premolars were selected and randomly assigned to six groups (n = 12 in each) considering ferrule location: circumferential ferrule (CF), without ferrule (WF), buccal ferrule (BF), lingual ferrule (LF), mesial ferrule (MF), and buccal–lingual ferrule (BLF). Cast posts were cemented into the prepared post spaces. Following conventional impression, Ni–Cr crowns were cemented to the specimens. After thermocycling (5,000 cycles, 5–55°C), the specimens were loaded at 45° in a universal testing machine until fracture. Data were analyzed with one-way ANOVA, Kolmogorov–Smirnov, and Tamhane tests. RESULTS: The maximum and minimum mean fracture resistance were related to the CF (1,143.84 N) and WF (514.89 N) groups, respectively, (P = 0.039). Fracture resistance in the BF (933.67 N) and BLF (874.01 N) groups was significantly higher than in the MF group (617.54 N) (P = 0.001). There was no significant difference between the MF, LF (722.89 N), and WF groups in terms of fracture resistance (P > 0.05). CONCLUSION: Teeth with CF showed maximum fracture resistance. The location of the ferrule effects on the fracture resistance of maxillary premolars and also the mode of failure.
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spelling pubmed-104320052023-08-17 Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study Koosha, Sara Jebelizadeh, Mahdieh S. Mostafavi, Azam S. Int J Dent Research Article OBJECTIVES: The present study aimed to assess the effect of ferrule location on fracture resistance of maxillary premolars. MATERIALS AND METHODS: A total of 72 extracted human maxillary premolars were selected and randomly assigned to six groups (n = 12 in each) considering ferrule location: circumferential ferrule (CF), without ferrule (WF), buccal ferrule (BF), lingual ferrule (LF), mesial ferrule (MF), and buccal–lingual ferrule (BLF). Cast posts were cemented into the prepared post spaces. Following conventional impression, Ni–Cr crowns were cemented to the specimens. After thermocycling (5,000 cycles, 5–55°C), the specimens were loaded at 45° in a universal testing machine until fracture. Data were analyzed with one-way ANOVA, Kolmogorov–Smirnov, and Tamhane tests. RESULTS: The maximum and minimum mean fracture resistance were related to the CF (1,143.84 N) and WF (514.89 N) groups, respectively, (P = 0.039). Fracture resistance in the BF (933.67 N) and BLF (874.01 N) groups was significantly higher than in the MF group (617.54 N) (P = 0.001). There was no significant difference between the MF, LF (722.89 N), and WF groups in terms of fracture resistance (P > 0.05). CONCLUSION: Teeth with CF showed maximum fracture resistance. The location of the ferrule effects on the fracture resistance of maxillary premolars and also the mode of failure. Hindawi 2023-08-09 /pmc/articles/PMC10432005/ /pubmed/37593681 http://dx.doi.org/10.1155/2023/9513804 Text en Copyright © 2023 Sara Koosha et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Koosha, Sara
Jebelizadeh, Mahdieh S.
Mostafavi, Azam S.
Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study
title Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study
title_full Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study
title_fullStr Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study
title_full_unstemmed Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study
title_short Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study
title_sort effect of ferrule location on fracture resistance of maxillary premolars: an in vitro study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10432005/
https://www.ncbi.nlm.nih.gov/pubmed/37593681
http://dx.doi.org/10.1155/2023/9513804
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