Thnakd for uisng health care Magic. Read your query. Loose tooth has usually nothing to do with pharyngitis. This can be due to periodontal reason ( if you have not been maintaining your teeth well). I would advice you to stop panicking and visit your local dentist(do not try to remove it yourself as you may end up doing ore harm) and have it evaluated.If very loose and hampering your eating process ,have it extracted .Missing tooth can be rehabilitated with a denture.Have your teeth professionally cleaned. Hope this was helpful. Thanks and regards.