Article:
A Technique for Making Impressions of Deeply Placed Implants
Summary:
Precise fit between dental implants
and the superstructure is important
for the long term success of implants
and implant-supported prostheses. One factor which may influence the
accuracy of the definitive prosthesis is
the stability of the impression coping
in polymerized impression material.
In some circumstances, an implant
must be placed well below the gingival
margin, meaning that most of the impression
coping will also be situated
subgingivally with no contact with the
impression material. This can result
in reduced stability of the impression
coping, allowing it to rotate when fastening
the implant analog.
This article
describes a simple technique that
involves the use of a roll of composite
resin, tray adhesive, and a small
amount of occlusal registration material
applied around a transfer coping
in a direct implant impression.