Which chemical has been linked to hypersensitivity reactions in some patients?

Chlorhexidine has been linked to hypersensitivity reactions in certain individuals, making it an important consideration in dental practice. It is commonly used as an antimicrobial agent in mouthwashes, periodontal treatments, and as a disinfectant. While highly effective, some patients may develop allergic reactions or sensitivities to chlorhexidine, presenting as contact dermatitis or other hypersensitivity symptoms. This underscores the necessity for dental professionals to monitor patients for any adverse reactions during and after the use of chlorhexidine-containing products.

In contrast, the other chemicals listed, while they may have their own risks and precautions, are not as commonly associated with hypersensitivity reactions in the healthcare setting as chlorhexidine is. This makes chlorhexidine a notable agent to be aware of in the context of managing patient sensitivity and comfort during dental procedures.