Retraction.

Retraction: Calvo-Guirado JL, Boquete-Cast ro A, Negri B, Delgado Ruiz R, Gómez-Moreno G, Iezzi G. Crestal bone reactions to immediate implants placed at different levels in relation to crestal bone. A pilot study in Foxhound dogs. Clin Oral Impl Res. 2014; 25: 344-351. The above article, published online on 25 January 2013 in Wiley Online Library (wileyonlinelibrary.com), and in Volume 25, pp. 344-351, has been retracted by agreement between the journal Editor in Chief, L Heitz-Mayfield, and John Wiley & Sons Ltd. The retraction has been agreed due to numerical discrepancies in Tables 1-4, resulting in unreliable data. Reference Calvo-Guirado, J. L., Boquete-Cast ro, A., Negri, B., Delgado Ruiz, R.,Gómez-Moreno, G., &Iezzi, G. (2014). Crestal bone reactions to immediate implants placed at different levels in relation to crestal bone. A pilot study in Foxhound dogs. Clinical Oral Implants Research, 25, 344-351. https://doi.org/10.1111/clr.12110.