硫酸锌对人恒牙釉质显微硬度的影响：一项体外研究。

Effect of zinc sulfate on human primary enamel microhardness: an in vitro study.

作者信息

Mirkarimi Mahkameh, Bargrizan Majid, Eskandarion Solmauz, Shahsavari Maryam

机构信息

Pediatric Dentistry Department, Zahedan University of Medical Sciences, Iran.

出版信息

J Clin Pediatr Dent. 2012 Summer;36(4):369-71. doi: 10.17796/jcpd.36.4.92q7971127v210r1.

DOI:10.17796/jcpd.36.4.92q7971127v210r1

PMID:23019834

Abstract

OBJECTIVE

The aim of this study was to assess the effect of zinc sulfate on microhardness of human primary enamel.

METHOD

Sixteen sound primary molars were sectioned mesiodistally. For each sample one of the sections was randomly immersed in artificial saliva (Biotene, USA) and the other was immersed in artificial saliva which was charged with 10 mg/5 mL concentration of zinc sulfate supplement (Razak Company, Iran) daily. After 24 days (the expected time to use up one 120-mL bottle) the surface microhardness of enamel was measured by knoop hardness test (KH) with Knoop diamond under a 50-gram load for 10 seconds.

RESULTS

The mean (+/- SD) microhardness values (KHV) for the tested groups were 320 +/- 49.45 and 357 +/- 36.35, respectively. There were statistically significant differences between the groups as exhibited by independent t-test (P = 0.023).

CONCLUSION

Primary teeth immersed in a zinc sulfate rich solution for 24 days showed higher microhardness values in comparison with the control group.

摘要

目的

本研究旨在评估硫酸锌对人乳牙牙釉质显微硬度的影响。

方法

将16颗完好的乳牙沿近远中方向切开。对于每个样本，其中一个切片随机浸入人工唾液（美国百特能）中，另一个则浸入每日添加10毫克/5毫升硫酸锌补充剂（伊朗拉扎克公司）的人工唾液中。24天后（预期用完一瓶120毫升溶液的时间），使用努氏硬度测试（KH），在50克载荷下用努氏金刚石对牙釉质表面显微硬度进行10秒测量。