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Open AccessArticle

Dimensional Stability of a Preliminary Vinyl Polysiloxane Impression Material

Centro de Investigação Interdisciplinar Egas Moniz, Instituto Universitário Egas Moniz, Quinta da Granja, Monte de Caparica, 2829-511 Caparica, Portugal
Facultad de Odontología, Universidad de Sevilla, C/ Avicena s/n 41009 Sevilla, Spain
Author to whom correspondence should be addressed.
Dent. J. 2019, 7(3), 81;
Received: 3 June 2019 / Revised: 25 June 2019 / Accepted: 27 June 2019 / Published: 1 August 2019
(This article belongs to the Section Dental Materials)
Oral rehabilitation success depends upon the accuracy and dimensional stability of the impressions. The purpose of this study is to evaluate the dimensional changes of a first impression type VPS (Vinyl Polysiloxane) (Imprint™ 4 Preliminary Penta™ Super Quick, 3M ESPE™, St Paul, MN, USA). 10 samples were obtained from this silicone with an automatic mixing machine (Pentamix 2, 3M ESPE™, Seefeld, Germany) according to International Organization for Standardization (ISO) 4823:2000 and stored in the IPQ (Portuguese Institute for Quality) for one week. The measurements were performed by laser interferometry, according to the Michelson technique. The dimensional stability was calculated according to the formula specified in ISO (International Organization for Standardization) 4823:2000. A statistical analysis via a one-way repeated measures ANOVA was performed. The material shrinkage was 0.29 ± 0.15% after setting, 0.32 ± 0.21% at 24 h and 0.30 ± 0.23% after 1 week. No significant shrinkage of the silicone under investigation was found over time. This material can be stored for a week without the risk of clinically significant dimensional changes. View Full-Text
Keywords: dimensional stability; laser interferometry; vinyl polysiloxane dimensional stability; laser interferometry; vinyl polysiloxane
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MDPI and ACS Style

Martins, F.; Reis, J.; Barbero Navarro, I.; Maurício, P. Dimensional Stability of a Preliminary Vinyl Polysiloxane Impression Material. Dent. J. 2019, 7, 81.

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