Influence of Methodological Variables on Fracture Strength Test Results of Intact Premolars: an ex-vivo study

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Published Sep 28, 2023
DOI: https://doi.org/10.18103/mra.v11i9.4217

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Main Article Content

Carlo Gaeta
Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, Viale Mario Bracci 16, Siena, Italy.
Giulia Malvicini
Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, Viale Mario Bracci 16, Siena, Italy.
Emanuele Mignosa
Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, Viale Mario Bracci 16, Siena, Italy.
Gianmarco Cecot
Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, Viale Mario Bracci 16, Siena, Italy.
Simone Grandini
Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, Viale Mario Bracci 16, Siena, Italy.
Crystal Marruganti
Unit of Endodontics and Restorative Dentistry, Department of Medical Biotechnologies, University of Siena, Viale Mario Bracci 16, Siena, Italy.

Abstract

The present ex vivo study evaluated the influence of periodontal ligament simulation, load inclination, and tip morphology on fracture strength test results on intact premolars. Forty maxillary premolars were divided into four groups, Group 1, with a 90° load inclination, spherical tip with a diameter of 3mm and periodontal ligament simulation (PDL+); Group 2, with a 90° load inclination, flat tip with a diameter of 2mm, PDL+; Group 3, with a 45° load inclination, flat tip with 2mm of diameter, PDL+; Group 4, 90° load inclination, spherical tip with 3mm diameter, without periodontal ligament reproduction. Interactions among variables and intergroup significance were tested with Wilcoxon rank-sum and Kruskal Wallis’s tests (p≤0.05). Statistically significant differences were found between groups B and C, but they were not found for the others. A 90° load inclination significantly increases fracture strength, while periodontal ligament simulation and tip morphology did not significantly influence the results.

Keywords: fracture strength, periodontal ligament, premolar, tooth fractures

Article Details

How to Cite
GAETA, Carlo et al. Influence of Methodological Variables on Fracture Strength Test Results of Intact Premolars: an ex-vivo study. Medical Research Archives, [S.l.], v. 11, n. 9, sep. 2023. ISSN 2375-1924. Available at: <https://esmed.org/MRA/mra/article/view/4217>. Date accessed: 15 may 2024. doi: https://doi.org/10.18103/mra.v11i9.4217.
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Issue
Vol 11 No 9 (2023): September Issue, Vol.11, Issue 9
Section
Research Articles

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