By the BossCE Editorial Team · 10 November 2026

The Short Answer

For a pregnant patient who needs dental treatment, lidocaine with adrenaline at standard dental doses and a periapical radiograph are both considered acceptable when clinically needed. Untreated dental pain or infection is generally regarded as the greater risk to mother and fetus.

Key Points

• The second trimester (weeks 13 to 27) is usually the most comfortable time for elective treatment, but urgent problems such as a painful tooth should be treated promptly at any stage.
• Lidocaine is the local anaesthetic most often recommended in pregnancy. Adrenaline at the standard concentrations used in dentistry is considered safe and helps limit systemic absorption.
• Aspirate before every injection and use only the amount needed.
• From around 24 weeks, seat the patient semi-supine to avoid compression of the inferior vena cava, and monitor blood pressure and heart rate.
• Fetal exposure from dental radiographs is very low, far below levels associated with harm. The ADA and ACOG state that necessary dental X-rays are safe at any stage of pregnancy.
• Follow local rules on shielding and beam alignment: some manufacturer and national documents still specify a lead apron, while recent ADA guidance no longer recommends routine abdominal and thyroid shielding.

Sources Behind This Summary

American Dental Association (ADA); American College of Obstetricians and Gynecologists (ACOG); National Institutes of Health (NIH); manufacturer instructions for use in the BossCE Library.

Practise It as a Case

Test your reasoning on a realistic case, marked against current guidance: Dental Care in Pregnancy in the BossCE AI Academy.

Summarised on 10 November 2026 from a BossCE AI answer with numbered sources. For qualified clinicians: it does not replace clinical judgement or local protocols. Spotted something out of date? Tell us.