Accuracy of three polyvinyl siloxane putty-wash impression techniques

Nissan, Joseph; Laufer, Ben-Zion; Brosh, Tamar; Assif, David

doi:10.1016/s0022-3913(00)80007-4

Cited by 99 publications

(115 citation statements)

References 18 publications

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“…The polyvinyl siloxanes are impression materials used in clinical dentistry due to several factors, such as handling characteristics, physical properties, and dimensional stability 5 . Moreover, impressions created with this type of elastomeric impression material can be obtained by different impression techniques [7][8] . Some authors 8,[10][11][12][13][14][15] have demonstrated that the impression technique is a critical factor which directly influences the dimensional accuracy.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, impressions created with this type of elastomeric impression material can be obtained by different impression techniques [7][8] . Some authors 8,[10][11][12][13][14][15] have demonstrated that the impression technique is a critical factor which directly influences the dimensional accuracy. However, in this study, the dimensional accuracy of a partially edentulous mandibular arch is related more to the type of impression material than the impression technique 7,[16][17] .…”

Section: Discussionmentioning

confidence: 99%

“…These impression materials are hydrophilic and present adequate properties, such as good tear strength and quick elastic recovery, along with excellent accuracy and dimensional stability [5][6] . The different viscosities allow them to be used in three impression techniques: 1-step putty/light-body, 2-step putty/lightbody, and monophase [6][7][8] . Several factors affect the dimensional accuracy of elastomeric impression material molds, such as the type of impression material used and its adhesion to the tray, viscosity, hydrophilicity, thickness, by-product formation, the time spent during cast pouring, incomplete elastic recovery, and polymerization/thermal shrinkage [7][8] .…”

Section: Introductionmentioning

confidence: 99%

“…The different viscosities allow them to be used in three impression techniques: 1-step putty/light-body, 2-step putty/lightbody, and monophase [6][7][8] . Several factors affect the dimensional accuracy of elastomeric impression material molds, such as the type of impression material used and its adhesion to the tray, viscosity, hydrophilicity, thickness, by-product formation, the time spent during cast pouring, incomplete elastic recovery, and polymerization/thermal shrinkage [7][8] . Several studies showing differences in dimensional accuracy between the impression techniques are found in literature [8][9][10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

“…Several factors affect the dimensional accuracy of elastomeric impression material molds, such as the type of impression material used and its adhesion to the tray, viscosity, hydrophilicity, thickness, by-product formation, the time spent during cast pouring, incomplete elastic recovery, and polymerization/thermal shrinkage [7][8] . Several studies showing differences in dimensional accuracy between the impression techniques are found in literature [8][9][10][11][12][13][14][15] . Conversely, other studies show similar outcomes between different impression techniques 7,[16][17] or only small differences within a specific group of elastomeric impression materials 18 .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Dimensional accuracy of different impression techniques of partially edentulous mandibular arch

Vitti

Feitosa

Bacchi

et al. 2017

RGO, Rev. Gaúch. Odontol.

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ObjectiveThe purpose of this in vitro study was to assess and compare the dimensional accuracy of three impression techniques: 1-step putty/light-body, 2-step putty/light-body, and the monophase technique. Methods A partially edentulous standard stainless steel mandibular arch cast with reference points on the teeth was used to make the impressions. The anteroposterior and transverse distances were measured. All impressions were made with a polyvinyl siloxane using stock metallic (1-and 2-step putty/light-body techniques) or acrylic resin (monophase technique) trays. The monophase impressions were made using a light-body material and the 1-and 2-step putty/light-body impressions with putty and light-body materials. After impression procedures, the accuracy of each technique was assessed measuring the stone casts (n = 5) poured from the impressions using a microscope at 30x magnification and at 0.5 µm accuracy. The data were analyzed statistically using 2-way ANOVA and Tukey's test (p<0.05). Results Stone casts made by all techniques had significantly negative linear changes (shrinkage). The anteroposterior distances showed more dimensional changes than the transverse distances. The edentulous side showed more shrinkage than the anteroposterior side. ConclusionNo differences between the impression techniques were found, but significant dimensional changes were observed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dimensional accuracy of different impression techniques of partially edentulous mandibular arch

Vitti

Feitosa

Bacchi

et al. 2017

RGO, Rev. Gaúch. Odontol.

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Randomized controlled clinical trial on the three-dimensional accuracy of fast-set impression materials

et al. 2012

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Evaluation of Dimensional Stability and Accuracy of Autoclavable Polyvinyl Siloxane Impression Material

Reddy

Vijitha

Karthikeyan

et al. 2012

J Indian Prosthodont Soc

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Dimensionally stable autoclavable impressions will be effective in controlling the cross-infection and contamination caused by patient's saliva and other oral secretions. The accuracy of newly introduced autoclavable polyvinyl siloxane impression material was assessed for its dimensional stability and accuracy. A standard metal model (Dentoform, U-501, Columbia) was customised for impression making. The impressions were made using the newly introduced polyvinyl siloxane impression materials (AFFINIS, Coltene/Whaledent AG, 9450 Alstalten, Switzerland). Fifty impressions were made and were divided into two groups A and B of 25 each. Group A was the control sample (non-autoclaved impressions) and group B was the test sample (autoclaved impressions), which was subjected to the steam autoclave procedure at 134 °C for 18 min, casts were poured in type IV gypsum products. The customised metal model, casts obtained from control and test group were subjected to laboratory evaluation with help of a travelling microscope (×10 magnification), and digital vernier calliper (0.01 mm/10 μm accuracy). Data analysis was done using one-way ANOVA and One-Sample t test to evaluate the overall accuracy (P < 0.005). As a result, there was an average reduction of 0.016 μm in overall dimension between the test and the control group when compared with the master model, which is not statistically or clinically significant. The newly introduced polyvinyl siloxane impression material is accurate and dimensional stable for clinical use when steam autoclaved at 134 °C for 18 min.

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Accuracy of three polyvinyl siloxane putty-wash impression techniques

Cited by 99 publications

References 18 publications

Dimensional accuracy of different impression techniques of partially edentulous mandibular arch

Dimensional accuracy of different impression techniques of partially edentulous mandibular arch

Randomized controlled clinical trial on the three-dimensional accuracy of fast-set impression materials

Evaluation of Dimensional Stability and Accuracy of Autoclavable Polyvinyl Siloxane Impression Material

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