No tooth pain but weak chewing may be caused by periodontitis, temporomandibular joint disorder disease, masticatory muscle weakness and other diseases, as follows.
1. Periodontitis: it can lead to resorption of alveolar bone and loss of attachment of periodontal tissues, which can cause loosening of teeth and weakness when chewing food.
2. Temporomandibular joint disorder: the lesion can involve the temporomandibular joint or masticatory muscle alone or both at the same time, manifesting as temporomandibular joint area and related masticatory muscle myalgia, jaw movement abnormality and dysfunction, causing mastication weakness.
3. Masticatory muscle weakness: myasthenia gravis, polymyositis, progressive muscular dystrophy, etc. may involve the masticatory muscles, masticatory muscle weakness occurs, resulting in masticatory weakness.
Teeth do not hurt but chewing weakness may have other reasons, it is recommended to go to the hospital in a timely manner, clear cause for targeted treatment.