system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following can be used for sterilization of hand piece except:
assistant
The correct answer is  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.