Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain your husband has a tooth infection which is causing swelling over the face indicates that there might be dental abscess formation that causes accumulation of pus below the root tips of the tooth and at times pus perforates the bone and accumulates into the soft tissues leading to swelling.. This condition generally does not completely resolves with only taking antibiotics and pus drainage has to be done for reducing swelling and pain. Although some reduction in swelling and infection can be achieved in 3 to 4 days after continuing antibiotic intake.. You should also give him anti inflammatory painkiller like Ibuprofen along with serratiopeptidases and do cool compresses over swelling.. In case if the condition worsen consult your dentist and he can either start Root canal treatment or incision and drainage for relief.. Hope this helps.. Regards.