1. Araujo MG, Lindhe J. Dimensional ridge alterations following tooth extraction. An experimental study in the dog. J Clin Periodontol. 2005;32:212–8.
2. Schropp L, Wenzel A, Kostopoulos KT. Bone healing and soft tissue contour changes following single tooth extraction: A clinical and radiographic 12-month prospective study. Int J Periodontics Restorative Dent. 2003;23:313–23.
3. Araujo M, Sukekava F, Wennstrom J, Lindhe J. Ridge alterations following implant placement in fresh extraction sockets: an experimental study in the dog. J Clin Periodontol. 2006;32:645–52.
4. Nevins M, Camelo M, De Paoli S, et al. A study of the fate of the buccal wall of extraction sockets of teeth with prominent roots. Int J Periodontics Restorative Dent. 2006;26:19–29.
5. Salama H, Salama MA, Garber D, Adar P. The inter-proximal height of bone: A guidepost to predictable aesthetic strategies and soft tissue contours in anterior tooth replacement. Pract Periodontics Aesthet Dent. 1998;10:1131–41.