A dental examination is important for detecting the cause of your symptoms. It is possible that there could be an abscess
or retention of debris <span style = 'background-color: #dae8f4'>under</span>
the bridge. A loose crown
can lead to lodgement of bacteria under
it and cause bad odour.Other causes of bad breath from mouth are tooth
decay, sinus disease or gum diseases or reflux disease. Tonsilloliths can also cause bad breath, sore throat, white debris, difficulty in swallowing and tonsillar swelling .These are only possibilities.