Dimensional Stability of a Preliminary Vinyl Polysiloxane Impression Material

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE Open Dentistry Journal Pub Date : 2019-08-01 DOI:10.3390/dj7030081

F. Martins, J. Reis, Ignacio Barbero Navarro, P. Maurício

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引用次数: 3

Abstract

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.

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初步乙烯基聚硅氧烷压印材料的尺寸稳定性

口腔康复的成功取决于印模的准确性和尺寸稳定性。本研究的目的是评估第一印象型VPS(乙烯基聚硅氧烷)(Imprint™4 Preliminary Penta™Super Quick, 3M ESPE™，圣保罗，MN，美国)的尺寸变化。根据国际标准化组织(ISO) 4823:2000，用自动混合机(Pentamix 2, 3M ESPE™，德国塞菲尔德)从这种硅胶中获得10个样品，并在IPQ(葡萄牙质量研究所)中保存一周。测量是通过激光干涉测量，根据迈克尔逊技术。尺寸稳定性根据ISO(国际标准化组织)4823:2000中规定的公式计算。通过单向重复测量方差分析进行统计分析。凝固后材料收缩率为0.29±0.15%，24 h收缩率为0.32±0.21%，1周收缩率为0.30±0.23%。随着时间的推移，所调查的硅胶没有发现明显的收缩。该材料可保存一周，无临床显著尺寸变化的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Open Dentistry Journal DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.00

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0.00%

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