Which antiseptic should not be used with local anesthesia?

Which antiseptic should not be used with local anesthesia?

• A. Alcohols
• B. Chlorhexidine
• C. Iodine
• D. Povidone-iodine

Answer: (A)

When preparing tissue for an injection, the antiseptic chosen should be effective yet gentle on mucous membranes and safe for the procedure. Alcohols are a strong dehydrating solvent and can irritate or damage the oral mucosa, causing a burning sensation and potential tissue irritation at the injection site. They also evaporate quickly, which means they have limited residual antimicrobial effect where the needle will pass, giving less protection right where you need it. In contrast, antiseptics like chlorhexidine or povidone-iodine offer good antimicrobial activity with better mucosal tolerance and longer-lasting action. For this reason, alcohol-based preparations are avoided near tissues that will receive local anesthesia.

When preparing tissue for an injection, the antiseptic chosen should be effective yet gentle on mucous membranes and safe for the procedure. Alcohols are a strong dehydrating solvent and can irritate or damage the oral mucosa, causing a burning sensation and potential tissue irritation at the injection site. They also evaporate quickly, which means they have limited residual antimicrobial effect where the needle will pass, giving less protection right where you need it. In contrast, antiseptics like chlorhexidine or povidone-iodine offer good antimicrobial activity with better mucosal tolerance and longer-lasting action. For this reason, alcohol-based preparations are avoided near tissues that will receive local anesthesia.