Is dental work safe during pregnancy?

What does the evidence say about dental work during pregnancy?

1. Standard dental local anesthesia with lidocaine is considered safe throughout pregnancy: a study of 293 women exposed to lidocaine in the first four months of pregnancy didn't find a higher chance of birth defects, and animal research hasn't linked it to fertility problems. 1
2. Routine preventive and restorative dental care, toothbrushing, flossing, checkups, fillings, and cleanings, is considered safe throughout pregnancy, and the old idea that calcium gets pulled from a pregnant person's teeth doesn't hold up to scrutiny. 2
3. A single dental bitewing x-ray delivers about 0.005 mSv and a panoramic film about 0.026 mSv, both far below the 50 mSv threshold research ties to any increased chance of birth defects, so a needed dental x-ray with a lead apron isn't something to put off. 3
4. Periodontal care during pregnancy is safe and effective at improving gum health, and in pooled trial data, some scaling-and-root-planing-based approaches were linked to a lower chance of preterm birth. 4
5. General anesthesia, different from the local anesthesia used for a routine filling, hasn't been linked to a higher chance of birth defects in most studies when it's needed in the first or early second trimester, though later-pregnancy surgery carries more general pregnancy-related risk, which is why elective procedures needing sedation are often scheduled around this. 5

Is dental work safe in each trimester?

• First trimester. First trimester is a fine time for a routine exam, cleaning, or urgent care like a filling. If you're dealing with morning sickness, let your hygienist know so they can adjust positioning and timing.
• Second trimester. Many practices find the second trimester the most comfortable window for longer or elective procedures, mainly for positioning and energy reasons rather than any special safety rule, since preventive and restorative care are appropriate throughout pregnancy.
• Third trimester. Urgent and routine care remain appropriate this late too, though reclining for a long appointment gets harder. Ask about shorter sessions or extra positioning support, and save anything non-urgent for after delivery if it's simply more comfortable that way.