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Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging.
Int J Oral Maxillofac Implants. 2021 Mar-Apr; 36(2):332-340.IJ

Abstract

PURPOSE

This study aimed to assess the fracture resistance of zirconia (Zr), reinforced polyetheretherketone (PEEK), and polyetherketoneketone (PEKK) implant abutments restored with glass-ceramic crowns after thermomechanical aging.

MATERIALS AND METHODS

Zr, reinforced PEEK, and PEKK titanium base abutments were divided into three groups (n = 10). CAD/CAM maxillary central incisor crowns were fabricated using monolithic lithium disilicate and luted to the abutments using resin cement. The specimens were thermomechanically aged (1.2 × 106 cycles, 49 N, 5°C to 55°C). After testing fracture strength and determining fracture patterns, statistical analyses were made using the one-way analysis of variance (ANOVA) and Tukey post hoc tests (α = .05).

RESULTS

Fracture resistance of the PEKK abutments (541.90 ± 68.49 N) was significantly lower than the Zr (780.65 ± 105.77 N) and reinforced PEEK (741.09 ± 99.84 N) abutments (P = .000). A significant discrepancy was not detected between the reinforced PEEK and Zr abutments. Failures usually formed due to crown or abutment fracture, plastic deformation of the titanium base or screw fracture in the Zr group, crown fracture or separation of the abutment-crown complex from the titanium base in the reinforced PEEK group, and abutment fracture without crown deformation in the PEKK group.

CONCLUSION

After thermomechanical aging, the reinforced PEEK abutments exhibited similar fracture resistance to the Zr abutments. All abutment types withstood the physiologic occlusal forces typical for the oral anterior region. Before considering them as alternative esthetic implant abutment materials, further in vitro and clinical studies are needed to determine their long-term performance.

Links

Publisher Full Text (DOI)

Authors

Türksayar AAD
No affiliation info available
Atsü SS
No affiliation info available

MeSH

BenzophenonesComputer-Aided DesignCrownsDental AbutmentsDental Implant-Abutment DesignDental ImplantsDental Restoration FailureDental Stress AnalysisEsthetics, DentalKetonesMaterials TestingPolyethylene GlycolsPolymersTitaniumZirconium

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33909724

Citation

Türksayar, Almira Ada Diken, and Saadet Sağlam Atsü. "Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging." The International Journal of Oral & Maxillofacial Implants, vol. 36, no. 2, 2021, pp. 332-340.
Türksayar AAD, Atsü SS. Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging. Int J Oral Maxillofac Implants. 2021;36(2):332-340.
Türksayar, A. A. D., & Atsü, S. S. (2021). Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging. The International Journal of Oral & Maxillofacial Implants, 36(2), 332-340. https://doi.org/10.11607/jomi.9007
Türksayar AAD, Atsü SS. Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging. Int J Oral Maxillofac Implants. 2021 Mar-Apr;36(2):332-340. PubMed PMID: 33909724.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging. AU - Türksayar,Almira Ada Diken, AU - Atsü,Saadet Sağlam, PY - 2021/4/28/entrez PY - 2021/4/29/pubmed PY - 2021/5/1/medline SP - 332 EP - 340 JF - The International journal of oral & maxillofacial implants JO - Int J Oral Maxillofac Implants VL - 36 IS - 2 N2 - PURPOSE: This study aimed to assess the fracture resistance of zirconia (Zr), reinforced polyetheretherketone (PEEK), and polyetherketoneketone (PEKK) implant abutments restored with glass-ceramic crowns after thermomechanical aging. MATERIALS AND METHODS: Zr, reinforced PEEK, and PEKK titanium base abutments were divided into three groups (n = 10). CAD/CAM maxillary central incisor crowns were fabricated using monolithic lithium disilicate and luted to the abutments using resin cement. The specimens were thermomechanically aged (1.2 × 106 cycles, 49 N, 5°C to 55°C). After testing fracture strength and determining fracture patterns, statistical analyses were made using the one-way analysis of variance (ANOVA) and Tukey post hoc tests (α = .05). RESULTS: Fracture resistance of the PEKK abutments (541.90 ± 68.49 N) was significantly lower than the Zr (780.65 ± 105.77 N) and reinforced PEEK (741.09 ± 99.84 N) abutments (P = .000). A significant discrepancy was not detected between the reinforced PEEK and Zr abutments. Failures usually formed due to crown or abutment fracture, plastic deformation of the titanium base or screw fracture in the Zr group, crown fracture or separation of the abutment-crown complex from the titanium base in the reinforced PEEK group, and abutment fracture without crown deformation in the PEKK group. CONCLUSION: After thermomechanical aging, the reinforced PEEK abutments exhibited similar fracture resistance to the Zr abutments. All abutment types withstood the physiologic occlusal forces typical for the oral anterior region. Before considering them as alternative esthetic implant abutment materials, further in vitro and clinical studies are needed to determine their long-term performance. SN - 1942-4434 UR - https://www.unboundmedicine.com/medline/citation/33909724/Fracture_Resistance_of_Zirconia_Polyetheretherketone_and_Polyetherketoneketone_Implant_Abutments_After_Aging_ DB - PRIME DP - Unbound Medicine ER -