Which surfaces in a dental office are covered with barriers?

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Barriers are used on surfaces that are touched frequently during patient care to prevent cross-contamination and speed up room turnover. All four items—the X-ray control switches, light handles, drawer handles, and the bracket table—are typically covered with disposable barriers because they are high-touch contact points that can transfer pathogens if left unprotected. Barriers protect the underlying equipment from saliva, blood, and other fluids, and they are replaced after each patient. If only one surface were barriered, other critical touchpoints would remain unprotected, making infection control less effective. So covering all four surfaces provides the most complete protection.