Dimensional accuracy of novel vinyl polysiloxane compared with polyether impression materials: an in vitro study
Transferring the intraoral situation accurately to the dental laboratory is crucial for fabricating precise restorations. This study aimed to compare the dimensional accuracy of a new hydrophilic quadrofunctional vinyl polysiloxane (VPS) and polyether (PE), in combination with different impression t...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
27 August 2024
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| In: |
Materials
Year: 2024, Volume: 17, Issue: 17, Pages: 1-12 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma17174221 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.3390/ma17174221 Verlag, kostenfrei, Volltext: https://www.mdpi.com/1996-1944/17/17/4221 
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| Author Notes: | Moritz Waldecker, Stefan Rues, Peter Rammelsberg and Wolfgang Bömicke |
| Summary: | Transferring the intraoral situation accurately to the dental laboratory is crucial for fabricating precise restorations. This study aimed to compare the dimensional accuracy of a new hydrophilic quadrofunctional vinyl polysiloxane (VPS) and polyether (PE), in combination with different impression techniques (mono-phase single step or dual-phase single step). The reference model simulated a partially edentulous mandible. Stainless-steel precision balls were welded to specific teeth and were used to detect dimensional deviations. Fifteen impressions were made for each of the following four test groups: (1) VPS mono-phase, (2) PE mono-phase, (3) VPS dual-phase, and (4) PE dual-phase. Global accuracy was measured by deviations from the reference model, while local accuracy focused on the trueness and precision of abutment tooth surfaces. Statistical analysis was conducted using ANOVA (α = 0.05). All distances were underestimated, with the highest global inaccuracies for the cross-arch distance, ranging from −82 µm to −109 µm. The abutment tooth surfaces showed excellent local accuracy for all the materials and techniques, with crown surface trueness < 10 µm and precision < 12 µm. Inlay surfaces had higher inaccuracies (trueness < 15 µm, precision < 26 µm). Within the limitations of this study, all impression materials and techniques can be used to produce models with clinically acceptable accuracy. |
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| Item Description: | Gesehen am 07.02.2025 |
| Physical Description: | Online Resource |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma17174221 |