口腔医学研究

口腔医学研究 ›› 2019, Vol. 35 ›› Issue (4): 390-392.DOI: 10.13701/j.cnki.kqyxyj.2019.04.020

• 口腔修复与材料学研究 • 上一篇    下一篇

调拌时间和粉水比对藻酸盐类印模材料流动性的影响

苏玉娣, 张玉英, 张锦玲, 陈小妹, 曾燕平, 卢兆杰, 林捷*   

  1. 福建医科大学附属口腔医院特诊科 福建 福州 350002
  • 收稿日期:2018-09-10 出版日期:2019-04-28 发布日期:2019-04-23
  • 通讯作者: 林捷,E-mail: linjie.dds@gmail.com
  • 作者简介:苏玉娣(1988~ ),女,龙岩人,护师,本科,研究方向为口腔材料学。
  • 基金资助:
    福建医科大学附属口腔医院青年拔尖人才项目(编号:2015-KQYY-BJ-2)

Effect of Mixing Time and Powder-water Ratio on Flowability of Alginate Impression Material

SU Yu-di, ZHANG Yu-ying, ZHANG Jin-ling, CHEN Xiao--mei, ZENG Yan-ping, LU Zhao-jie, LIN Jie*   

  1. Department of VIP Dental Service, School and Hospital of Stomatology, Fujian Medical University. Fuzhou 350002, China
  • Received:2018-09-10 Online:2019-04-28 Published:2019-04-23

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摘要： 目的: 比较3种粉水比和4种调拌时间对自动调拌法藻酸盐类印模材的流动性和精确度的影响。方法: 使用自动藻酸盐调拌机调拌藻酸盐印模材料(ALGINoplast,贺利氏古莎齿科有限公司,德国)进行试验。3种粉水比(分别为11.5 g:23 mL 、11.5 g:25 mL、11.5 g:27 mL)和4种调拌时间(3 s、6 s、9 s、12 s)共12种组合进行试验,分别测量流动性和精确度。结果: 粉水比(F=167.97,P＜0.01)和调拌时间(F=58.09,P＜0.01)对印模材的流动性结果影响均有统计学意义。各种流动性平均值中23 mL 12 s组(43.05±3.43) mm最低,27 mL 3 s组(72.31±2.25 ) mm最高。粉水比和调拌时间对印模材的精确度影响均没有统计学意义。结论: 在一定范围内,粉水比、调拌时间均和藻酸盐类印模材的流动性成负相关关系;水量增加较水量减少对流动性的影响更为明显。

关键词: 流动性, 精确度, 粉水比, 调拌时间, 自动调拌法, 藻酸盐类印模材

Abstract: Objective: To compare the effects of three powder-water ratios and four mixing times on the flowability and accuracy of alginate impression by automatic mixing. Methods: The alginate impression material was mixed by automatic alginate mixer. The fluidity and accuracy were measured by 12 combinations of 3 powder-water ratios (11.5 g:23 mL, 11.5 g:25 mL, 11.5 g:27 mL) and 4 mixing times (3 s, 6 s, 9 s, 12 s). Results: The powder-water ratio and mixing time had significant effect on the flowability of impressions (P < 0.01). The 23mL12s group had the lowest fluidity [(43.05±3.43) mm] and the 27mL3s group had the highest [(72.31±2.25) mm]. The influence of powder-water ratio and mixing time on the accuracy of impression materials was not statistically significant. Conclusion: In a certain range, the powder-water ratio and mixing time were negatively correlated with the flowability of alginate impression materials, and the effect of increasing water content on the flowability was more obvious than that of decreasing water content.

Key words: Flowability, Accuracy, Powder-water ratio, Mixing time, Automatic mixing method, Alginate impression material