BioMed Research International
Volume 2017 (2017), Article ID 7196847, 1 page
https://doi.org/10.1155/2017/7196847

Corrigendum

Corrigendum to “Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis”

Ki-Sun Lee,¹ Joo-Hee Shin,² Jong-Eun Kim,³ Jee-Hwan Kim,³ Won-Chang Lee,⁴ Sang-Wan Shin,¹ and Jeong-Yol Lee¹

¹Department of Prosthodontics, Korea University Guro Hospital, Seoul, Republic of Korea
²Department of Conservative Dentistry, Korea University Guro Hospital, Seoul, Republic of Korea
³Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Republic of Korea
⁴Graduate School of Clinical Dentistry, Korea University, Seoul, Republic of Korea

Correspondence should be addressed to Jeong-Yol Lee; wddc@korea.ac.kr

Received 15 October 2017; Accepted 29 October 2017; Published 6 November 2017

Copyright © 2017 Ki-Sun Lee et al. 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.

In the article titled “Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis” [1], there were some reference and numerical errors in Tables 1 and 2, which should be corrected as follows.

Table 1: Mechanical properties of the materials used in the finite element model.

Materials
Elastic modulus (GPa)
Poisson’s ratio
Reference

Cortical bone
13.7
0.30

Trabecular bone
1.37
0.30

Periodontal ligament
0.069
0.45

Dentine
18.6
0.31

Gutta-percha
0.00069
0.45

Post cement
5.0
0.30

Resin core
20.0
0.30

Fiberglass post
53.8
0.30

Gold alloy
95.0
0.33

PEKK
5.1
0.40
Manufacturer

Ceramic crown
62.0
0.30

Table 2: Flexural strengths for the different component materials of the model.

Materials
Flexural strength (MPa)
Reference

Dentine
212.9

Post cement
97

Resin core
90

Fiberglass post
1242.5

Gold alloy
1545.3

PEKK
200
Manufacturer

Ceramic crown
160

References

K.-S. Lee, J.-H. Shin, J.-E. Kim et al., “Biomechanical evaluation of a tooth restored with high performance polymer PEKK post-core system: a 3D finite element analysis,” BioMed Research International, vol. 2017, Article ID 1373127, 9 pages, 2017.