Dental impaction: The pressing together of teeth. For example, molar teeth (the large teeth in the back of the jaw) can be impacted, cause pain, and require pain medication, antibiotics, and surgical removal. SLIDESHOW Mouth Problems: TMJ, Canker Sores, Painful Gums and More See Slideshow From Oral Health Resources Can Oral Hygiene Curb Blood Sugar Spikes?Bad Breath: See How to Stop ItNatural Ways to Whiten Your Teeth Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19