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Updated: May 12, 2026

Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
Published on: October 18, 2021
Bone level changes in dental implants with platform-switched design after immediate and delayed placement in the
Friedhelm Heinemann1, Reiner Biffar, Christian Schwahn
1Department of Prosthodontics, Gerodontology and Biomaterials, University of Greifswald, Greifswald, Germany. FriedhelmHeinemann@web.de
Abstract:
This study sought to evaluate platform-switched implants for immediate placement. A total of 136 implants were placed in 58 patients using either an immediate or delayed implant protocol. Bone level changes of the implants were measured mesially and distally and statistically analyzed with linear mixed models. No implant was lost. There was no significant difference between immediate and delayed implants in approximal bone level changes during the first year (95% confidence interval: -0.10 to -0.01 for immediate versus -0.14 to -0.07 for delayed implants). Subsequent bone resorption was negligible in both groups.
