All of the following can be used for sterilization of hand piece except:
Autoclave sterilization of hand pieces is one of the most rapid methods of sterilization. However, fibre optics dim with repeated heat sterilization in several months to a year, apparently owing to oil residue and debris baked on the ends of the optical fibres.
Chemical vapour sterilization is recommended for some types of hand pieces- apparently works well with ceramic -bearing hand pieces.
ETOX (ethylene oxide) gas is the greatest method of sterilization used for hand pieces.
Dry heat sterilization of hand pieces is generally not recommended.
Autoclave
Chemical vapour sterilization
ETOX
Dry heat sterilization