Preserving the Bone Around the Neck of the Implant, a Critical Factor in Long Term Aesthetic Stability

A historical overview of implant-related bone loss from Albrektsson and
Zarb’s list of success criteria to Lazzara’s 2006 description of platform switching

Introduction:

In 1986 Albrektsson and Zarb came out with their now famous list of success
criteria that forms the backbone of our determination of survival versus success
in implantology. One of the main factors in this list was the ‘‘normal’’ loss of
bone to the first thread and then the loss of 0.2 mm of bone per year thereafter.

For many years we accepted this as gospel and an implant was deemed
successful even with this loss of bone. The issue of bone loss was not a problem
at all in most cases as it still meant that the implant was stable long term and in
cases where the implant was correctly positioned and where there was a thick
gingival morphotype there was no shine through of the metal from the implant or
recession and exposure of the implant head. However… Read More

Published In: The Journal of Indian Prosthodontic Society, 2014

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