Which statement can describe the compatibility of high-speed handpieces with dry-heat sterilization?

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Dry-heat sterilization can be hard on some handpieces because it uses hot, dry air for an extended period, which can affect delicate components like bearings, lubricants, and plastics. Because of that, not every high-speed handpiece is compatible with dry heat—some are heat-sensitive and should not be sterilized this way. The best understanding is that compatibility depends on the specific device and its manufacturer guidelines; some handpieces can handle dry heat, while others cannot. That’s why the statement describing variability—some handpieces damaged by heat cannot be sterilized in a dry-heat sterilizer—is the correct way to capture the real-world situation. The other options are too absolute or restrictive: not all handpieces are safe for dry heat, sterilization isn’t limited to chemical vapor only, and dry-heat sterilizers can be used for handpieces that are approved for them.