Amoxicillin is given to treat a bacterial infection. It is mainly prescribed for sinus and chest infections, urine infections, ear infections, and some dental infections. Doctors give unbiased, trusted information on whether Amoxicillin can cause or treat Toothache: Dr. Davantzis on how long does it take for amoxicillin to work for tooth infection: It generally will take 24 -48 hours for an antibiotic to take effect. It is important for you to know that no antibiotic will not cure an abscessed tooth. You need. Amoxicillin is an antibiotic often used for the treatment of a number of bacterial infections. These include middle ear infection, strep throat, pneumonia, skin infections, and urinary tract infections among others. It is taken by mouth, or less commonly by injection. In the past, doctors would routinely prescribe antibiotics before dental work to prevent joint replacement infection, but today is different. Amoxicillin Directions: Amoxicillin is a broad-spectrum penicillin antibiotic available by prescription used to treat various infections caused by susceptible strains of bacteria. For Dental Abscess: I have 4 Impacted teeth in my Jaw and I've been experiencing pain. Along with a painkiller a doctor prescribed me Amoxicillin as a precaution until I speak to the oral surgeon. Many dental procedures cause bleeding in the mouth, which can allow the bacteria in the mouth to enter into the person’s bloodstream. Certain people are more susceptible to bacterial infections in their bloodstream than others. I also been having alot of pain on that side my ear hurts my mouth and also been with a headache for 3 days now. I just started my amoxicillin today when will the pain ease up alittle Is Having Dental Work During Pregnancy Safe? Pregnancy and dental work questions are common for expecting moms. Preventive dental cleanings and annual exams during pregnancy are not only safe, but are recommended. Compare prices and print coupons for Amoxicillin (Generic Amoxil) and other Skin Infection, Ear Infection, Urinary Tract Infection, Bacterial Infection, Lower Respiratory Infection, and Upper Respiratory Infection drugs at CVS, Walgreens, and other pharmacies. Prices start at $4.89.