Short, sourced summaries of the clinical questions doctors and dentists ask most often, each summarised from a BossCE AI answer with numbered sources. Ask your own question at the end of any topic.

• Lidocaine with Adrenaline and Dental X-Rays in Pregnancy – Can a pregnant patient have a filling with lidocaine and adrenaline, and a periapical radiograph? What current guidance says, with sources.
• Metformin Before a Contrast CT: When to Stop and Restart – Should metformin be stopped before iodinated contrast when eGFR is 30 to 60? Where ACR, RANZCR, ESUR, NICE and the FDA label agree and differ.
• Dental Abscess with Facial Swelling: When to Refer to Hospital – The airway, systemic and spread signs that mean a dental abscess needs urgent hospital referral rather than treatment in the clinic.