A technique for making impressions of deeply placed implants

Effect of Splinting on Dimensional Accuracy of Impressions Made of Implants with Different Subgingival Alignments

“…Thus, using longer impression copings could compensate for the subgingival part, which would not be engaged by the impression material; however, not all the implant systems offer longer impression copings . In this regard, several methods have been implemented and include using composite resin to enhance the retention of the impression coping in the impression or using acrylic resin and a piece of another impression coping to increase the length of the impression coping . Also, use of more rigid impression materials such as PVS registration bite or putty material has been suggested to increase the stability of impression copings in the impression …”

“…Rigidity of the impression material is also an important factor for resisting rotation in the direct impression technique . Therefore, use of addition silicone‐based occlusal registration material has been suggested to enhance the stability of impression copings of deeply placed implants . This is probably because this material has more rigidity than poly(vinyl siloxane) (PVS) impression material .…”

“…It may also be reasonable to use longer impression copings for transfer of deeply set implants from the mouth to the definitive casts, although not all implant systems have provided such impression copings . Alternatively, Linkevicius et al proposed a method that probably can be used for all implant systems. Their method involves using occlusal registration material on top of a square impression coping, which has been modified by a roll of composite around the exposed area of the coping, to increase its retentive surface area.…”

Prosthetic Rehabilitation of Deeply Placed Implant

“…8 Longterm success of implants and implant-supported prosthesis depends on the precise fit between dental implant and the superstructure. 9 According to Cavallaro and Greenstein, the complications arose due to improper selection of abutment resulting in aesthetic, and peri-implant complications can be corrected by using appropriate prosthetic component design to restore the health of soft tissue surrounding malpositioned implant. Abutment scan affect the implant stress and strain distribution, changing the forces transmission to the adjacent bone.…”

A modified open tray direct abutment level impression technique: A clinical tip

“…Tomas Linkevicius et al, described a simple technique using 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. 10 It is important to note that the choice of impression technique should be made based on the specific clinical circumstances and the clinician's experience and preference. In the present case a direct abutment impression technique was modified to convert it into an open tray technique in the absence of long impression coping.…”