Protocol of use - alcohol free disinfectant for surfaces

Protocol of use - alcohol free disinfectant for surfaces

Surface disinfection is a critical step in preventing healthcare-associated infections (HAIs). In dental implantology, where the risk of cross-contamination is particularly high, this process must be carried out rigorously and in accordance with public health recommendations. While alcohol-based disinfectants are commonly used due to their rapid efficacy, they are not suitable for every situation. So, what are the alcohol-free alternatives, and when should they be preferred?

Why avoid alcohol in certain situations?

Alcohol (mainly ethanol and isopropanol) is a powerful disinfectant with bactericidal, virucidal, and fungicidal properties. However, its use has several limitations:

Material incompatibility: alcohol can damage sensitive surfaces such as plexiglass, LCD screens, or certain medical-grade plastics.

Flammability: in surgical areas, the presence of heat sources or oxygen makes alcohol use potentially hazardous.

Rapid evaporation: this limits contact time, which may be insufficient for complete disinfection on some surfaces.

Irritation: repeated use of alcohol may cause skin or respiratory irritation in healthcare professionals.

Alcohol-free alternatives: which active ingredients?

Several families of alcohol-free disinfectants offer equivalent or complementary efficacy, especially in surgical settings such as implantology:

1. Quaternary ammonium compounds

These surfactants have good bactericidal and fungicidal activity, and some effectiveness against enveloped viruses. They are well tolerated by sensitive surfaces and medical materials.

Advantages: non-corrosive, non-flammable, excellent material compatibility

Limitations: reduced effectiveness against spores and certain non-enveloped viruses

2. Biguanides (such as chlorhexidine)

Widely used in skin antisepsis, chlorhexidine is also found in surface disinfectant formulations. It offers excellent tolerance and sustained action.

Advantages: low toxicity, broad bacterial spectrum

Limitations: limited virucidal activity, may be inactivated by organic matter

3. Hydrogen peroxide (stabilized)

This oxidizing disinfectant is effective against a broad spectrum of microorganisms, including spores, and can be used in liquid or vapor form (VHP).

Advantages: fast-acting, biodegradable, leaves no toxic residues

Limitations: unstable in light, may cause irritation at high concentrations

Best practices for use in the dental practice

Pre-cleaning: all disinfection must be preceded by thorough cleaning to remove organic matter.

Respecting contact time: alcohol-free products often require longer application times. Always refer to the manufacturer's instructions.

Product choice based on surface type: choose formulations compatible with medical devices, touchscreen displays, or dental chairs.

Ventilation: ensure proper air circulation when using chemical disinfectants to prevent buildup of irritating vapors.

Conclusion

In dental and surgical environments, surface disinfection is not limited to alcohol-based products. Alcohol-free alternatives allow for safe, effective disinfection that is compatible with sensitive materials. Their integration into hygiene protocols should be considered carefully, based on official guidelines and the specific requirements of the equipment in use.

For further reference, consult the recommendations of HAS and ANSM on biocidal products and surface disinfection protocols in healthcare settings.