Research and educationComparison of the dimensional accuracy of one- and two-step techniques with the use of putty/wash addition silicone impression materials
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Cited by (58)
Accuracy of transferring analog dental casts to a virtual articulator
2020, Journal of Prosthetic DentistryCitation Excerpt :Patient data were collected over 2 appointments. First, conventional polyvinyl siloxane impressions were made of both dental arches with a 2-step putty-wash technique (Aquasil Ultra DECA Heavy, Aquasil Ultra LV; Dentsply Sirona).23-26 Two pairs of casts were prepared per patient.
Marginal discrepancy of noble metal-ceramic fixed dental prosthesis frameworks fabricated by conventional and digital technologies
2018, Journal of Prosthetic DentistryEvaluation of defects in surface detail for monophase, 2-phase, and 3-phase impression techniques: An in vitro study
2015, Journal of Prosthetic DentistryCitation Excerpt :The putty in the 2-phase, 1-step impression technique also tends to push the light-body impression material off the prepared tooth, and critical areas, such as the finish line, can be covered by the putty, which cannot record details satisfactorily.10 A further disadvantage has been reported for the 2-phase, 2-step impression technique, whereby some light-body impression material can spread along the occlusal surface during the reseating of the putty, or it can displace the preliminary putty impression during the seating; this can generate distortions that reduce dimensional accuracy.11 The data from the present study confirmed the improved results of the 2-phase, 2-step impression technique compared with those with a 1-step procedure.
Experimental study on the use of spacer foils in two-step putty and wash impression procedures using silicone impression materials
2015, Journal of Prosthetic DentistryCitation Excerpt :When the spacer foil technique is used, the flexible foil deforms and creates a void between teeth and impression material during the primary impression. This allows for drainage and lower pressures on the first impression material during the definitive impression.16,17 Thus, less compensative elastic recovery of the impression material upon removal can be expected.