调拌方式对玻璃离子水门汀充填体抗压强度的影响

CHINA MEDICAL HERALD Vol.16No.24August 2019

调拌方式对玻璃离子水门汀充填体抗压强度的影响

邱韬1,2

陈欣蕾1,2

黄娟1,2

叶

丹1,2

毛渤淳1,2

肖静宜1,2徐庆鸿1,2

1.口腔疾病研究国家重点实验室国家口腔疾病临床医学研究中心,四川成都610041;

2.四川大学华西口腔医院儿童口腔科,四川成都

610041

[摘要]目的探讨不同的调拌方式对玻璃离子水门汀充填体抗压强度的影响,为临床操作者在牙体缺损充填治疗中玻璃离子水门汀的正确使用提供方法指导。方法除调拌方式外,为控制无关变量,每组其余变量均控制相同。按照临床常用玻璃离子水门汀调拌方式的技术要求,分别用单向顺时针旋转法(Ⅰ组)、单向逆时针旋转法(Ⅱ组)、正反双向交替旋转法(Ⅲ组)和上下提拉折叠法(Ⅳ组)等4种临床常用的调拌方法调拌玻璃离子水门汀材料各5份,充入抗压强度测试专用模具。待其完全凝固后,测试其抗压强度并进行统计分析。结果上下提拉折叠法与其余3种方法调拌的玻璃离子水门汀充填体抗压强度比较,差异均有统计学意义(P <0.05)。Ⅳ组(上下提拉折叠法)的玻璃离子水门汀充填体抗压强度强度显著低于Ⅰ、Ⅱ、Ⅲ组,差异均有统计学意义(P <0.05)。结论临床上使用玻璃离子水门汀材料时,建议采用单向顺时针旋转法、单向逆时针旋转法、正反双向交替旋转法,同时需进一步严格调拌要求,提升材料调拌的合格率。

[关键词]调拌方式;玻璃离子水门汀;口腔充填材料;抗压强度;口腔护理[中图分类号]R473.71

[文献标识码]A

[文章编号]1673-7210(2019)08(c)-0111-04

Effect of different mixing methods on the compressive strength of glass ionomer cements

QIU Tao 1,2CHEN Xinlei 1,2HUANG Juan 1,2YE Dan 1,2MAO Bochun 1,2XIAO Jingyi 1,2XU Qinghong 1,2

1.State Key Laboratory of Oral Disease National Clinical Research Center for Oral Disease,Sichuan Province,Chengdu 610041,China;

2.Department of Pediatric Dentistry,West China Hospital of Stomatology,Sichuan University,Sichuan Province,Chengdu 610041,China

[Abstract]Objective To investigate the effect of different mixing methods on the compressive strength of glass ionomer cement fillings,and to provide guidance for clinical operators in the correct use of glass ionomer cement in the filling treatment of tooth defects.Methods In order to control irrelevant variables,except mixing method,all other variables in each group were controlled the same.According to the technical requirements of the mixing methods of glass ionomer cement commonly used in clinic,four kinds of commonly used mixing methods were used to mix glass ionomer cement materials,namely,unidirectional clockwise rotation method (group Ⅰ),unidirectional anticlockwise rotation method (groupⅡ),two-way alternating rotation method (group Ⅲ)and the pulling and pushing with folding method (group Ⅳ),

with five copies of each method,and filled into a special mold for compressive strength testing.After it was completely

solidified,its compressive strength was tested and statistical analysis was performed.Results Compressive strength of glass ionomer cement fillings prepared by pulling and pushing with folding method was compared with the other three methods,the differences were statistically significant (P <0.05).The compressive strength of glass ionomer cement in group Ⅳwas significantly lower (pulling and pushing with folding method)than that in groups Ⅰ,Ⅱand Ⅲ,the dif⁃ferences were statistically significant (P <0.05).Conclusion Unidirectional clockwise rotation method,unidirectional

anticlockwise rotation method and the alternate two -way rotation method should be recommended in clini⁃cal practice.At the same time,it is necessary to fur⁃ther strict mixing requirements to improve the qualifi⁃cation rate of material mixing.

[Key words]Mixing methods;Glass ionomer cements;Dental filling materials;Compressive strength;Oral care

[基金项目]四川省重点研发项目(2017SZ0155)。

[作者简介]邱韬(1995.12-),男,四川大学华西口腔医学院2014级儿童口腔医学专业八年制在读博士研究生;研究方向:儿童口腔错颌畸形早期预防与矫治。

[通讯作者]徐庆鸿(1968.10-),男,副主任护师,四川大学华西口腔医院儿童口腔科护士长;研究方向:口腔护理临床、教学、科研。

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