摘要
目的探讨镀金技术对非贵金属全冠固位力的影响。方法将60个镍铬合金全冠随机分为3组,每组20个。对照组喷砂后不作处理,部分镀金组在内冠颈缘1.3mm范围内镀金,全冠镀金组的内冠全部镀金。将全冠用玻璃离子与底座黏固后,在Instron万能材料力学实验机上测量固位力,对3组之间的固位力进行统计分析。结果对照组、部分镀金组、全冠镀金组的固位力分别为(657±151)N、(632±139)N、(569±103)N。对照组与全冠镀金组、全冠镀金组与部分镀金组固位力之间的差异有统计学意义(P<0.05),而对照组与部分镀金组固位力之间的差异无统计学意义(P>0.05)。结论镍铬合金全冠镀金后固位力会有所下降,但仍能满足临床上的固位要求。部分镀金全冠固位力虽有所下降,但可忽略不计。
Objective To research the influence of gilt to the retention of the complete metal crown. Methods Sixty Ni-Cr alloy complete metal crown were divided into three groups, control group (common Ni-Cr alloy complete metal crown), whole gold-plating group (whole gilding on the tissue surface of the inner Ni-Cr alloy complete metal crown), partial gold-plating group (gilding on the tissue surface of 1/3 cervical inner Ni-Cr alloy complete metal crown). The retention force of complete metal crown was measured by tensile force/pressure ergograpb. Results The retention force of control group, partial gold-plating group, whole gold-plating group were (657± 151) N, (632±139) N, (569±103) N, respectively. There were significant differences between control group and whole goldplating group, whole gold-plating group and partial gold-plating group (P〈0.05). There was no significant difference between control group and partial gold-plating group (P〉0.05). Conclusion The force of retention would decrease after gilding on the tissue surface of the inner Ni-Cr alloy complete metal crown, but have no influence to normal retention requirement of complete crown. Although the retention of partial gold-plating complete metal crown had somewhat decrease, it could be ignored.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2008年第5期503-504,525,共3页
West China Journal of Stomatology
基金
江西省科技厅基金资助项目(2003504)
关键词
镍铬合金
镀金
金属全冠
固位
Ni-Cr alloy
gilt
complete metal crown
retention