Questions

The drug of choice to treat an acute dental abscess at the apex of tooth number 3 (which is a periapical abscess due to infection at the tip of the tooth root) would typically be amoxicillin. This antibiotic is effective against the common bacteria involved in dental abscesses, particularly Streptococcus species and anaerobes that often infect the tooth pulp.

For patients who are allergic to penicillin, alternatives include:

• Clindamycin: A good alternative that covers many of the same organisms, including anaerobes.
• Azithromycin: Another option, particularly for those allergic to penicillin.

If the infection is severe or the patient has other risk factors (such as a compromised immune system), metronidazole may be added to provide better coverage against anaerobic bacteria.

It is important to note that while antibiotics are essential in managing infection, drainage of the abscess (if indicated) is the key component of treatment. If there is significant swelling or systemic symptoms like fever, urgent intervention and possibly an emergency dental procedure are necessary.