Does local anesthesia in the mouth affect the fetus?

During dental treatment, local infiltration or block anesthesia usually has minimal impact on the fetus. However, the use of general anesthesia or inappropriate anesthetic agents may pose risks. Dental care during pregnancy requires special caution, and it is essential to inform the doctor about the pregnancy in advance. Detailed analysis is as follows:

Local anesthetics are commonly used for dental procedures during pregnancy. These medications are typically characterized by rapid metabolism, low dosage, and limited transfer across the placenta in significant amounts, thus generally not affecting fetal growth and development. Dentists carefully control the dosage and select drugs considered safe for pregnant women to minimize potential risks.

General anesthesia involves multiple drugs, some of which may cross the placenta and affect the fetus. The risk is relatively higher during the first trimester, which is a critical period for fetal organ development. Unless it is an emergency, doctors generally do not recommend general anesthesia for dental treatments during pregnancy.

Pregnant women should enhance oral hygiene practices, including brushing teeth morning and night, rinsing after meals, and using soft-bristled toothbrushes to reduce gum irritation. Regular dental check-ups are important to address issues such as cavities and periodontal disease early, helping to prevent urgent dental conditions during pregnancy that might necessitate anesthesia.