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Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?

This paper assesses the impact of preheating of adhesive cement on the fracture resistance of lithium disilicate and zirconia restorations. Methods: A total of 80 human maxillary premolar teeth were assigned into 8 groups (n = 10) according to material type (either lithium disilicate or zirconia) an...

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Autores principales: Sakrana, Amal Abdelsamad, Al-Zordk, Walid, El-Sebaey, Heba, Elsherbini, Ahmed, Özcan, Mutlu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8509625/
https://www.ncbi.nlm.nih.gov/pubmed/34640000
http://dx.doi.org/10.3390/ma14195603
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author Sakrana, Amal Abdelsamad
Al-Zordk, Walid
El-Sebaey, Heba
Elsherbini, Ahmed
Özcan, Mutlu
author_facet Sakrana, Amal Abdelsamad
Al-Zordk, Walid
El-Sebaey, Heba
Elsherbini, Ahmed
Özcan, Mutlu
author_sort Sakrana, Amal Abdelsamad
collection PubMed
description This paper assesses the impact of preheating of adhesive cement on the fracture resistance of lithium disilicate and zirconia restorations. Methods: A total of 80 human maxillary premolar teeth were assigned into 8 groups (n = 10) according to material type (either lithium disilicate or zirconia) and type of resin cement (either LinkForce or Panavia SA) with preheating temperature at 54 °C or at room temperature (25 °C). Teeth were prepared and restored with either lithium disilicate or zirconia restorations. After cementation, specimens were thermal cycled (10,000 cycles, 5 °C/55 °C), then load cycled for 240,000 cycles (50 N). Each specimen was statically loaded until fracture and the load (N) at fracture was recorded, then the failure mode was detected. Statistical analysis of data was performed (p ≤ 0.05). Results: There was no significant difference (p = 0.978) in fracture mean values between LinkForce and Panavia SA. Statistically significant difference (p = 0.001) was revealed between fracture resistance of lithium disilicate restorations cemented with LinkForce at 25 °C and at 54 °C; however there was no significant difference (p = 0.92) between the fracture resistance of lithium disilicate restorations cemented with Panavia SA used at 25 °C and at 54 °C. Regarding the interaction between ceramic material, cement type, and cement preheating, there was no significant effect (p > 0.05) in fracture resistance. The cement type does not influence the fracture resistance of ceramic restorations. Preheating of resin cement has negatively influenced the fracture resistance of all tested groups, except for lithium disilicate cemented using LinkForce cement.
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spelling pubmed-85096252021-10-13 Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations? Sakrana, Amal Abdelsamad Al-Zordk, Walid El-Sebaey, Heba Elsherbini, Ahmed Özcan, Mutlu Materials (Basel) Article This paper assesses the impact of preheating of adhesive cement on the fracture resistance of lithium disilicate and zirconia restorations. Methods: A total of 80 human maxillary premolar teeth were assigned into 8 groups (n = 10) according to material type (either lithium disilicate or zirconia) and type of resin cement (either LinkForce or Panavia SA) with preheating temperature at 54 °C or at room temperature (25 °C). Teeth were prepared and restored with either lithium disilicate or zirconia restorations. After cementation, specimens were thermal cycled (10,000 cycles, 5 °C/55 °C), then load cycled for 240,000 cycles (50 N). Each specimen was statically loaded until fracture and the load (N) at fracture was recorded, then the failure mode was detected. Statistical analysis of data was performed (p ≤ 0.05). Results: There was no significant difference (p = 0.978) in fracture mean values between LinkForce and Panavia SA. Statistically significant difference (p = 0.001) was revealed between fracture resistance of lithium disilicate restorations cemented with LinkForce at 25 °C and at 54 °C; however there was no significant difference (p = 0.92) between the fracture resistance of lithium disilicate restorations cemented with Panavia SA used at 25 °C and at 54 °C. Regarding the interaction between ceramic material, cement type, and cement preheating, there was no significant effect (p > 0.05) in fracture resistance. The cement type does not influence the fracture resistance of ceramic restorations. Preheating of resin cement has negatively influenced the fracture resistance of all tested groups, except for lithium disilicate cemented using LinkForce cement. MDPI 2021-09-27 /pmc/articles/PMC8509625/ /pubmed/34640000 http://dx.doi.org/10.3390/ma14195603 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sakrana, Amal Abdelsamad
Al-Zordk, Walid
El-Sebaey, Heba
Elsherbini, Ahmed
Özcan, Mutlu
Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?
title Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?
title_full Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?
title_fullStr Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?
title_full_unstemmed Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?
title_short Does Preheating Resin Cements Affect Fracture Resistance of Lithium Disilicate and Zirconia Restorations?
title_sort does preheating resin cements affect fracture resistance of lithium disilicate and zirconia restorations?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8509625/
https://www.ncbi.nlm.nih.gov/pubmed/34640000
http://dx.doi.org/10.3390/ma14195603
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