Section VIII 9. Section IX 10. Section X 11. Osteogenesis Chapter Two Section VIII T . The contour of the periodontal attachment is specific to the morphology of each tooth.
Interproximal attachment is more coronal than on the facial aspect of the tooth.
Maintanence of this contour is important in preserving the natural morphology of the gingiva and height of the interdental papilla. Coronal projection of the interproximal bone supports the soft tissue. The crestal bone is an essential part of the functional and esthetic anatomy. Fixture position should not compromise the gingival attachment to the tooth interproximately. Over countersinking of implants results in a steep ramp of interproximal bone leading apically from the tooth to the implant.