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  • Title: [Clinical evaluation of the effect of gold alloy and Ni-Cr alloy porcelain fused metal crown restorations].
    Author: Sun WG, Liu XH, Zhang L, Zhang C, Xie MY, Zhou WJ.
    Journal: Shanghai Kou Qiang Yi Xue; 2009 Feb; 18(1):40-3. PubMed ID: 19290425.
    Abstract:
    PURPOSE: To observe the clinical effect of gold alloy porcelain fused metal (PFM) crown restoration and Ni-Cr alloy PFM crown restoration. METHODS: A total of 168 teeth from 48 patients were restored with gold alloy PFM crown. The other 48 patients, with a total of 179 teeth were restored with Ni-Cr alloy PFM crown. They were examined in integrality, retention, shade, cervical margin, and gingival health immediately, 6 months, one year, two years ,and three years after restoration. The date was analyzed by rank sum test using SPSS12.0 software package. RESULTS: The clinical effect of Ni-Cr alloy PFM crown was as good as gold alloy PFM crown when checked up after cementation at once. However, when they were examined 6 months, one year, two years ,and three years after restoration, the clinical effect of gold alloy PFM crown group was significantly better than that of Ni-Cr alloy PFM crown, P<0.05. CONCLUSION: The gold alloy PFM crown has better properties than Ni-Cr alloy PFM crown as a kind of long-term restoration, especially on the aspect of shade.
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