Dry heat hot air sterilizer generally involves placing an item to be sterilized inside an oven or heat chamber, and heating it until it is warmed all the way through. This process usually kills infectious organisms. It is is suitable for use by Home Users & in beauty salons and spas but is also great for nail technicians, mobile therapists & students. This item could heat up to 220 cellius degress. The first advantage of using it is metal tools and instruments will not rust, allowing these tools and instruments to last much longer. Other advantages include less pitting and dulling of sharps,and no drying time is required.Porta escova de dente Features Dry Heat hot air Sterilization High Temprature up to 220°C.