| 周亿岸,肖松,王宇华,翁维民.水温变化对藻酸盐印模材料精度及凝固时间的影响[J].口腔材料器械杂志,2024,33(1):20-23. |
| 水温变化对藻酸盐印模材料精度及凝固时间的影响 |
| The influence of water temperature variations on the accuracy and setting time of alginate impression materials |
| 投稿时间：2023-04-21 修订日期：2023-09-28 |
| DOI：10.11752/j.kqcl.2024.01.04 |
| 中文关键词: 藻酸盐印模材料 温度 流动性 工作时间 形变量 |
| 英文关键词:Alginate impression material Temperature Flowability Working time Deformation |
| 基金项目:上海市自然科学基金面上项目（编号：20ZR1431900）；上海第九人民医院院级教学项目（编号：JYJX03201904） |
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| 中文摘要: |
| 目的 探究水温变化对藻酸盐印模材料流动性、工作时间、凝固时间和形变量的影响。方法 分别将液剂控制在4种不同水温（8℃、14℃、23℃和32℃）下用全自动印模调拌机调拌藻酸盐粉体，通过比较4组藻酸盐印模材料在玻璃板上的流动性，观测测量工作时间、凝固时间；利用模具套件制取印模，再观察印模形变量。采用SPSS 24.0软件包对数据进行统计学分析，比较各组之间的差异。结果 4种不同温度液剂调制的藻酸盐印模材料的流动性从大到小依次为8℃组>14℃组>23℃组>32℃组，且不同组别间差异具有统计学意义（P<0.05）。工作时间及凝固时间从短到长依次为32℃组<23℃组<14℃组<8℃组，各组间差异具有统计学意义（P<0.05），32℃组的工作时间（29.3±1.0）s和凝固时间（41.0±1.4）s以及8℃组的凝固时间（133.2±3.8）s均不符合临床使用要求。各组形变量之间存在差异，但不具有统计学意义（P>0.05）。结论 在一定范围内，水温变化和藻酸盐印模材料的流动性、工作时间及凝固时间呈负相关，临床使用时以14℃～25℃的水温较合适。 |
| 英文摘要: |
| Objective Explore the influence of water temperature variations on the flowability,working time,setting time,and deformation of alginate impression materials.Methods Four different water temperatures were used to mix alginate with a fullautomatic impression mixing machine,grouped according to different water temperatures (8 ℃,14 ℃,23 ℃ and 32 ℃),and the working time and setting time were observed and measured by comparing the flowability of alginate impression materials on the glass plate; a mold kit was used to prepare the impression and observe its deformation.The data was statisically analyze using the SPSS 24.0 software package and compare the differences between the groups.Results The flowability of the alginate impression materials prepared by the four different water temperature was in order of 8 ℃ group >14 ℃ group >23 ℃ group >32 ℃ group,and the difference between groups was statistically significant (P<0.05).The working time and the setting time in descending order was 32 ℃ group <23 ℃ group <14 ℃ group <8 ℃ group,and the difference between different groups was statistically significant (P<0.05).The working time of (29.3±1.0) s and setting time of (41.0±1.4) s in the 32 ℃ group,as well as the setting time of (133.2±3.8) s in 8 ℃ group,did not meet the requirements for clinical application.There was a differences in deformation between the groups,but it was not statistically significant (P>0.05).Conclusion Within a certain range,the water temperature has a negative correlation with the fluidity,working time and setting time of alginate impression materials.A water temperature of 14~25 ℃ is suitable for clinical use. |
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