Can swollen lymph nodes be caused by a tooth abscess?

Yes. The lymph nodes draining an area with an infection can become enlarged as the body tries to fight the infection. Typically lymph nodes in the neck, and behind the ears can swell from a tooth abscess.
Absolutely. Lymph nodes drain areas of the body. If you have an active infection such as a tooth access, seeing swollen lymph nodes would corroborate the abscess diagnosis.

Related Questions

Can a tooth abscess create painful lymph nodes in the neck on the side of the tooth ache? I've had on/off lymph pain for about 3 mos.

Yes. Usually tooth infection whether acute or chronic will trigger the immune system to react. Lymph nodes swelling is one of this reaction. Please consult a dentist for proper treatment. Read more...
Yes. Please seek dental treatment immediately. You've waited about three months too long to be seen. This problem will not resolve without care, and can only get worse. Read more...
Yes. yes, the lymphatics in your neck are in a chain leading to multiple nodes being inflamed. . Read more...

Is it possible to have a abcess where a tooth was extracted a year ago? The reason I ask is because I have has swollen lymph node for about nine months, just last month it enlarged to 3 centimeters. My ENT has just removed three swollen lymph nodes. But

Make an appointment. Swollen lymph nodes, while they can be related to something as simple as a common cold, can also be signs of life-threatening conditions. You can evaluate any dental components at a routine 6 month dental exam, but if something is hurting, swelling or bleeding you have an instability and it's time for an intervention. Be serious. Make an appointment with your dentist and your ENT. Read more...
Biopsy of the node. If the node remains enlarged (greater than 10mm) for3 months, or continues to grow, biopsy of the lymph node is indicated with CBCd blood test. Read more...