[Biocompatibility of JJ magnetic retainer metal materials].
OBJECTIVE
The purpose of this study was to evaluate the biocompatibility of new JJ-magnetic retainer metal materials.


METHODS
Preliminary biocompatible tests of the metal materials were performed depending on ISO 10.993-12 standard. They were cytotoxicity test, hemolysis test, acute systemic toxicity test, sensitization test and Ames test.


RESULTS
The cytotoxicity of the metal material was grade I. The hemolysis rate was 0.45%. There was no abnormal sensitization and irritation actions in the experimental group. The metal had no action of mutagenesis and carcinogenesis.


CONCLUSIONS
The JJ-magnetic retainer metal material showed excellent biocompatibility on the preliminary tests. It would be a good material in the way of biological safety.
Department of Prosthodontics,Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011,China.
F Q
FQ
Zhang
H X
HX
Cao