Great question. Your dental infection, known as pericoronitis, will not affect your lip filler. Infections of the teeth, gums, and bones of the jaws are typically confined to those anatomic areas unless they are not treated, in which case they spread to the deeper layers of the skin. By this time, there is appreciable swelling and redness of the face. In this situation, the region with fillers would be swollen and would mask the changes achieved by filler. I would ensure the situation does not progress to this point. Make sure you see your dentist, oral surgeon, or specialist to definitively treat an oral infection (tooth related or not) as early as possible. The dental surgery itself will also not affect your previously applied lip filler. Allow a period of 2-3 weeks after major dental work before getting additional lip or facial fillers, since swelling can linger for this amount of time. You will achieve more precise results!