What alternative method is used for sterilizing instruments that are prone to rusting?

Dry heat sterilization is an effective method for sterilizing instruments that are prone to rusting. This technique utilizes high temperatures to kill microorganisms, making it particularly suitable for metal instruments that can corrode when exposed to moisture. Unlike steam sterilization, which uses steam under pressure and can lead to rusting, dry heat sterilization operates without moisture, ensuring that instruments maintain their integrity and sharpness.

The process typically involves placing the instruments in a dry heat sterilizer set at a specific temperature for a designated amount of time. This allows for efficient sterilization without the risk of oxidation that comes with moisture. Dry heat is particularly beneficial for items that are sensitive to moisture and cannot withstand the high humidity of steam sterilization.

The other options are less suitable for rust-prone instruments due to the factors mentioned. Steam sterilization introduces moisture, which can lead to rusting. Chemical sterilization, while useful for heat-sensitive items, may not be as reliable for complete sterilization compared to dry heat. Irradiation is typically a method used for specific uses, such as in the sterilization of single-use medical devices, rather than routine sterilization of dental instruments.