树脂复合水门汀的粘性行为。

Viscous behavior of resin composite cements.

机构信息

Division of Dental Materials and Engineering, Department of Reconstructive Dentistry, University Center for Dental Medicine, University of Basel.

出版信息

Dent Mater J. 2021 Jan 31;40(1):253-259. doi: 10.4012/dmj.2019-313. Epub 2020 Oct 8.

DOI:10.4012/dmj.2019-313

PMID:33028791

Abstract

The objective of this study was to analyze the viscous behavior during setting reaction of resin composite cements and how it is influenced by temperature. Viscous properties during auto-polymerization at 23°C of three adhesive (Panavia V5 [PV5]; RelyX Ultimate [RUL]; Multilink Automix [MLA]) and three self-adhesive (Panavia SA plus [PSA]; RelyX Unicem 2 Automix [RUN]; Multilink SpeedCem [MSC]) resin composite cements were rheometrically measured. Changes in contact angle and temperature during auto-polymerization were evaluated for each cement at 23°C and 37°C. Rheological analysis and temperature measurements corresponded in terms of curve progression. The tested resin composite cements demonstrated strong variations in their viscous behavior during setting reaction. PV5 and PSA become less viscous at 37°C and then polymerize quickly. For RUL and RUN at 37°C, viscosity rises, and polymerization takes place quickly. MLA and MSC start with high viscosity, then MSC polymerizes very fast and MLA rather slowly.

摘要

本研究旨在分析树脂水门汀在凝固反应过程中的粘性行为及其受温度的影响。采用流变学方法测量了三种黏结剂（Panavia V5 [PV5]；RelyX Ultimate [RUL]；Multilink Automix [MLA]）和三种自黏结剂（Panavia SA plus [PSA]；RelyX Unicem 2 Automix [RUN]；Multilink SpeedCem [MSC]）树脂水门汀在 23°C 下自聚合过程中的粘性特性。评估了每种水门汀在 23°C 和 37°C 下的接触角和聚合过程中的温度变化。流变学分析和温度测量在曲线进展方面具有一致性。测试的树脂水门汀在凝固反应过程中的粘性行为表现出强烈的变化。PV5 和 PSA 在 37°C 时粘性降低，然后快速聚合。对于 RUL 和 RUN 在 37°C 时，粘度上升，聚合迅速发生。MLA 和 MSC 起始时具有较高的粘度，随后 MSC 快速聚合，而 MLA 聚合较慢。