Shanghai Journal of Stomatology ›› 2014, Vol. 23 ›› Issue (2): 143-148.

• Basic Study • Previous Articles     Next Articles

Comparative study of sensitivity of different dental metal materials

LIU Yue1, WANG Xiao-ping2, WU-Bin1, HU-Yue3, DOU Xia3, SUN Hong-ying1, DING Ya-tong1, ZHANG Xin1   

  1. 1.Department of Stomatology, Huashan Hospital, Fudan University. Shanghai 200040;
    2.Department of Stomatology,Yantai Yuhuangding Hospital. Yantai 264000, Shandong Province;
    3.Department of Dermatology, Huashan Hospital, Fudan University. Shanghai 200040, China
  • Received:2013-05-20 Online:2014-04-20 Published:2014-05-21

Abstract: PURPOSE: To compare the sensitivity of different dental metal materials, in order to provide references for choosing of dental metal materials. METHODS: Patch test was performed on 92 patients wearing dental metal prosthesis. Pearson Chi-square test, corrected Chi-square test and Fisher exact test were used for statistical analysis with SPSS17.0 software package. RESULTS: ①The sensitivity rates of different metal materials were different. The allergy rate of nickel (Ni) was the highest (22.8%), while the allergy rate of aluminum (Al) was 0. ②More women were allergic to both palladium (Pd) and nickel (Ni) than men with significant difference (P>0.05). ③Women with ear piercing were more allergic to nickel (Ni), but there was no significant correlation between ear piercing and nickel allergy (P>0.05).④There was cross reaction between nickel(Ni)and palladium (Pd), 83.3% of palladium (Pd) allergy patients were allergic to nickel (Ni), while 47.6% of nickel(Ni) allergy patients were allergic to palladium (Pd). ⑤Patch test had a delayed reaction. CONCLUSIONS: Dental metal materials have certain allergies, women are more allergic to both palladium (Pd) and nickel (Ni) than men, with significant difference. Patch test may have a delayed reaction. If necessary, observation for 96 h, 7 days or even longer time, are needed to exclude false positivity.

Key words: Dental metal materials, Patch test, Allergic reactions

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