Indirect cross infection occurs when microorganisms are transferred from a contaminated item to another person. Which technique will prevent this occurrence?

The prevention of indirect cross infection is crucial in maintaining a safe and hygienic environment in dental practice. The use of disposables is highly effective in reducing the risk of transferring microorganisms from contaminated items to another person. Disposable items are designed for single-use; once they have been utilized, they are discarded, preventing any potential contamination that could arise from cleaning and reusing. This practice minimizes the chances of infection transmission, as each patient is treated with fresh, uncontaminated tools.

The other options, while also contributing to infection control in various ways, do not offer the same level of assurance against indirect cross infection as the use of disposables. For instance, decontamination of items is an essential step, but it involves the cleaning and sterilization process, which could still allow for risks if not done perfectly or if equipment is not intended for reuse. High-speed aspiration is a technique used during procedures to remove fluids and debris but does not directly address the transfer of microorganisms via contaminated items. Zoning of the clinical area helps to organize and maintain cleanliness standards but does not provide the same direct prevention of cross infection as using disposable items does.