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Influence of Different CAD/CAM Crown Materials on the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging.
Int J Prosthodont. 2019 Jan/Feb; 32(1):91-96.IJ

Abstract

PURPOSE

To investigate the effects of different commercially available computer-aided design/computer-assisted manufacturing (CAD/CAM) materials for fabrication of molar crowns, including polyetheretherketone (PEEK), on the fracture strength and failure mode of custom-made titanium and zirconia abutments after artificial aging.

MATERIALS AND METHODS

A total of 48 identical custom-made CAD/CAM abutments milled out of titanium or zirconia were divided into six test groups of eight specimens each. The groups were assigned as follows: titanium abutments restored with zirconia crowns (TiZ), with lithium disilicate crowns (TiL), or with PEEK crowns (TiP); zirconia abutments bonded to a titanium base and restored with zirconia crowns (ZrZ), with lithium disilicate crowns (ZrL), or with PEEK crowns (ZrP). The specimens were artificially aged in a chewing simulator for 1.2 million cycles of dynamic loading with simultaneous thermal cycling and then loaded to fracture in the universal testing machine. Shapiro-Wilk test was used to test for normality. One-way analysis of variance followed by post hoc analysis using Bonferroni test was used to detect statistically significant differences among groups.

RESULTS

All specimens survived the artificial aging process simulating 5 years of clinical service. The fracture patterns and means of the fracture strength (N) varied between groups: TiZ = 4,926 N; TiL = 3,706 N; TiP = 3,878 N; ZrZ = 5,529 N; ZrL = 2,826 N; and ZrP = 3,967 N.

CONCLUSION

Although the tested combinations showed different fracture patterns and loads, all tested abutment and crown materials and their different combinations could be considered to have fracture strengths suitable for clinical application.

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Publisher Full Text (DOI)

Authors

Elsayed A
No affiliation info available
Farrag G
No affiliation info available
Chaar MS
No affiliation info available
Abdelnabi N
No affiliation info available
Kern M
No affiliation info available

MeSH

Computer-Aided DesignCrownsDental AbutmentsDental Implant-Abutment DesignDental Restoration FailureDental Stress AnalysisMaterials TestingTitaniumZirconium

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30677119

Citation

Elsayed, Adham, et al. "Influence of Different CAD/CAM Crown Materials On the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging." The International Journal of Prosthodontics, vol. 32, no. 1, 2019, pp. 91-96.
Elsayed A, Farrag G, Chaar MS, et al. Influence of Different CAD/CAM Crown Materials on the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging. Int J Prosthodont. 2019;32(1):91-96.
Elsayed, A., Farrag, G., Chaar, M. S., Abdelnabi, N., & Kern, M. (2019). Influence of Different CAD/CAM Crown Materials on the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging. The International Journal of Prosthodontics, 32(1), 91-96. https://doi.org/10.11607/ijp.6137
Elsayed A, et al. Influence of Different CAD/CAM Crown Materials On the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging. Int J Prosthodont. 2019 Jan/Feb;32(1):91-96. PubMed PMID: 30677119.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of Different CAD/CAM Crown Materials on the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging. AU - Elsayed,Adham, AU - Farrag,Gasser, AU - Chaar,Mohamed Sad, AU - Abdelnabi,Nouran, AU - Kern,Matthias, PY - 2019/1/25/entrez PY - 2019/1/25/pubmed PY - 2019/10/30/medline SP - 91 EP - 96 JF - The International journal of prosthodontics JO - Int J Prosthodont VL - 32 IS - 1 N2 - PURPOSE: To investigate the effects of different commercially available computer-aided design/computer-assisted manufacturing (CAD/CAM) materials for fabrication of molar crowns, including polyetheretherketone (PEEK), on the fracture strength and failure mode of custom-made titanium and zirconia abutments after artificial aging. MATERIALS AND METHODS: A total of 48 identical custom-made CAD/CAM abutments milled out of titanium or zirconia were divided into six test groups of eight specimens each. The groups were assigned as follows: titanium abutments restored with zirconia crowns (TiZ), with lithium disilicate crowns (TiL), or with PEEK crowns (TiP); zirconia abutments bonded to a titanium base and restored with zirconia crowns (ZrZ), with lithium disilicate crowns (ZrL), or with PEEK crowns (ZrP). The specimens were artificially aged in a chewing simulator for 1.2 million cycles of dynamic loading with simultaneous thermal cycling and then loaded to fracture in the universal testing machine. Shapiro-Wilk test was used to test for normality. One-way analysis of variance followed by post hoc analysis using Bonferroni test was used to detect statistically significant differences among groups. RESULTS: All specimens survived the artificial aging process simulating 5 years of clinical service. The fracture patterns and means of the fracture strength (N) varied between groups: TiZ = 4,926 N; TiL = 3,706 N; TiP = 3,878 N; ZrZ = 5,529 N; ZrL = 2,826 N; and ZrP = 3,967 N. CONCLUSION: Although the tested combinations showed different fracture patterns and loads, all tested abutment and crown materials and their different combinations could be considered to have fracture strengths suitable for clinical application. SN - 0893-2174 UR - https://www.unboundmedicine.com/medline/citation/30677119/Influence_of_Different_CAD/CAM_Crown_Materials_on_the_Fracture_of_Custom_Made_Titanium_and_Zirconia_Implant_Abutments_After_Artificial_Aging_ DB - PRIME DP - Unbound Medicine ER -