Oral diseases cause premature loss of chewing function in many middle-aged and elderly people, and may also cause or aggravate heart disease, gastric disease, diabetes, cardiovascular disease, and joint disease. Many dental diseases have become far more harmful than the teeth themselves and are an important cause of many diseases. What are the symptoms that are easily confused with them? 1, teeth bite weakness Periodontitis often manifests as bleeding gums, bad breath, pus overflow, loose teeth in severe cases, bite weakness and persistent dull pain. 2, loose teeth and tooth loss refers to the impact of external forces, periodontal disease gum recession, aging gum nutritional atrophy and other factors that cause tooth loosening, severe tooth loss. Most adults suffer from periodontal disease, most periodontal disease progresses slowly, mostly gingivitis at the beginning, except for occasional bleeding from brushing teeth and not many conscious symptoms, so it does not attract attention. The development of gingivitis to a certain extent is periodontitis, at this time can appear serious oral odor, periodontal repeated abscesses, loose teeth, increasingly large gaps, more and more sparse, serious tooth loss. If the patient visits the doctor at this stage, the doctor can control the deterioration of inflammation, but the periodontal tissue that has been destroyed (including gum recession) is irreversible and difficult to fully recover. 3, chewing wear of teeth Wear can be caused in the normal chewing process, this physiological wear is called chewing wear.