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about the publisher _ imprint roots the international C.E. magazine of endodontics U.S. Headquarters Tribune America 116 West 23rd Street, Ste. 500 New York, NY 10011 Tel.: (212) 244-7181 Fax: (212) 244-7185 feedback@dental-tribune.com www.dental-tribune.com Roots Managing Editor Fred Michmershuizen f.michmershuizen @dental-tribune.com Managing Editor Sierra Rendon s.rendon@dental-tribune.com Publisher Torsten R. Oemus t.oemus@dental-tribune.com Managing Editor Robert Selleck r.selleck@dental-tribune.com President/Chief Executive Officer Eric Seid e.seid@dental-tribune.com Group Editor Kristine Colker k.colker@dental-tribune.com Education Director Christiane Ferret c.ferret@dtstudyclub.com Client Relations Coordinator Leerol Colquhoun l.colquhoun@dental-tribune.com Tribune America is the official media partner of: roots_Copyright Regulations Product/Account Manager Humberto Estrada h.estrada@dental-tribune.com Product/Account Manager Maria Kaiser m.kaiser@dental-tribune.com Product/Account Manager Will Kenyon w.kenyon@dental-tribune.com Feedback & General Inquiries feedback@dental-tribune.com Editorial Board Marcia Martins Marques, Leonardo Silberman, Emina Ibrahimi, Igor Cernavin, Daniel Heysselaer, Roeland de Moor, Julia Kamenova, T. Dostalova, Christliebe Pasini, Peter Steen Hansen, Aisha Sultan, Ahmed A Hassan, Marita Luomanen, Patrick Maher, Marie France Bertrand, Frederic Gaultier, Antonis Kallis, Dimitris Strakas, Kenneth Luk, Mukul Jain, Reza Fekrazad, Sharonit Sahar-Helft, Lajos Gaspar, Paolo Vescovi, Marina Vitale, Carlo Fornaini, Kenji Yoshida, Hideaki Suda, Ki-Suk Kim, Liang Ling Seow, Shaymant Singh Makhan, Enrique Trevino, Ahmed Kabir, Blanca de Grande, José Correia de Campos, Carmen Todea, Saleh Ghabban Stephen Hsu, Antoni Espana Tost, Josep Arnabat, Ahmed Abdullah, Boris Gaspirc, Peter Fahlstedt, Claes Larsson, Michel Vock, Hsin-Cheng Liu, Sajee Sattayut, Ferda Tasar, Sevil Gurgan, Cem Sener, Christopher Mercer, Valentin Preve, Ali Obeidi, Anna-Maria Yannikou, Suchetan Pradhan, Ryan Seto, Joyce Fong, Ingmar Ingenegeren, Peter Kleemann, Iris Brader, Masoud Mojahedi, Gerd Volland, Gabriele Schindler, Ralf Borchers, Stefan Grümer, Joachim Schiffer, Detlef Klotz, Herbert Deppe, Friedrich Lampert, Jörg Meister, Rene Franzen, Andreas Braun, Sabine Sennhenn-Kirchner, Siegfried Jänicke, Olaf Oberhofer and Thorsten Kleinert _the international C.E. magazine of roots published by Tribune America is printed quarterly. The magazine’s articles and illustrations are protected by copyright. Reprints of any kind, including digital mediums, without the prior consent of the publisher are inadmissible and liable to prosecution. This also applies to duplicate copies, translations, microfilms and storage and processing in electronic systems. Reproductions, including excerpts, may only be made with the permission of the publisher. All submissions to the editorial department are understood to be the original work of the author, meaning that he or she is the sole copyright holder and no other individual(s) or publisher(s) holds the copyright to the material. The editorial department reserves the right to review all editorial submissions for factual errors and to make amendments if necessary. Tribune America does not accept the submission of unsolicited books and manuscripts in printed or electronic form and such items will be disposed of unread should they be received. Tribune America strives to maintain the utmost accuracy in its clinical articles. If you find a factual error or content that requires clarifi- cation, please contact Group Editor Kristine Colker at k.colker@dental-tribune.com. Opinions expressed by authors are their own and may not reflect those of Tribune America and its employees. Tribune America cannot assume responsibility for the validity of product claims or for typographical errors. The publisher also does not assume responsibility for product names or statements made by advertisers. The responsibility for advertisements and other specially labeled items shall not be borne by the editorial department. Likewise, no respon- sibility shall be assumed for information published about associations, companies and commercial markets. All cases of consequential liability arising from inaccurate or faulty representation are excluded. General terms and conditions apply, and the legal venue is New York, New York. 22 I roots 1_ 2017