About the Authors

Kerstin Bitter

kerstin.bitter@charite.de

Affiliation Department for Operative and Preventive Dentistry, University School of Dental Medicine, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Berlin, Germany

Christin Gläser

Affiliation Department for Operative and Preventive Dentistry, University School of Dental Medicine, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Berlin, Germany

Konrad Neumann

Affiliation Department of Medical Informatics Biometry and Epidemiology, CharitéCentrum 4, Charité - Universitätsmedizin Berlin, Berlin, Germany

Uwe Blunck

Affiliation Department for Operative and Preventive Dentistry, University School of Dental Medicine, CharitéCentrum 3, Charité - Universitätsmedizin Berlin, Berlin, Germany

Roland Frankenberger

Affiliation Department of Operative Dentistry and Endodontology, University of Marburg, Marburg, Germany

Competing Interests

For the present study the authors received the following donations: VOCO, Cuxhaven, Germany provided 20 Fiber posts and the corresponding luting and adhesive system. Dentsply DeTrey, Konstanz, Germany supplied 20 Fiber posts and the corresponding luting and adhesive system. Ivoclar Vivadent, Schaan, Liechtenstein gave 20 Fiber posts and the corresponding luting and adhesive system. Finally, DMG, Hamburg, Germany provided 20 Fiber posts and the corresponding luting and adhesive system. There are no further patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: KB UB RF. Performed the experiments: KB CG. Analyzed the data: KB KN. Contributed reagents/materials/analysis tools: KB CG UB. Wrote the paper: KB UB KN RF.