Although I usually reserve the use of Antibiotics for truly necessary situations, I would certainly discuss the possibility with your dentist.
Tooth number 10 is inside an area or the face/skull where an infection could have serious consequences.
If you decide to use the Antibiotics , I would make sure that your hubby is on an enteric coated probiotic as well as in a diet rich with fermented foods. I would additionally suggest that he considers a quality immune-enhancing supplement as soon as he is off the antibiotic.