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Abstract Objective：To explore the effect of the carboxymethyl chitosan oral composite membrane films on pericoronitis of the wisdom tooth disease causing germs.Method：From January 2011 to December 2013，120 cases of wisdom intellectual pericoronitis in our hospital were randomly divided into the observation group and the control group，the observation group were given carboxymethyl chitosan oral composite membrane treatment，the control group were given Ornidazole Iodine Glycerol gelatin sponge treatment，the clinical effect of the two groups were compared.Result：The clinical symptoms of the two group were effectively alleviated，the cure rate of the observation group was 78.3%， the total effective rate was 98.3%， which was significantly higher than 60.0%，91.7% of the control group，the difference was statistically significant（P<0.05）.Conclusion：The effect of carboxymethyl chitosan composite membrane film agent oral pathogens to wisdom tooth pericoronitis obviously，could promote the improvement of clinical symptoms and accelerate the prognosis of patients， it was worth to popularize in clinic.
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