Infant teeth clenching and squeaking may be caused by improper sleeping position, abnormal dental development, parasitic disease, calcium deficiency and other factors. 1. Improper sleeping position: when sleeping at night, often sleeping on one side, may lead to chewing muscle tension spasm, there will be the phenomenon of squeaking teeth, after correcting the sleeping position, it may return to normal on its own. 2. Abnormal development of teeth: after the development of teeth are not aligned, the masticatory muscles contract involuntarily, causing teeth grinding, which will lead to teeth creaking, and in serious cases, it will also be complicated by temporomandibular joint disorders. 3. Parasitic disease: Parents in the daily care is not appropriate, so that the baby appeared parasitic infection, will lead to the baby bite teeth creaking, may also be accompanied by diarrhea, abdominal pain and other symptoms. 4. Calcium deficiency: infants lack calcium in the body more, will often appear clenching and squeaking, mainly at night, accompanied by restless sleep, excessive sweating and other symptoms. If your baby’s teeth are clenching and squeaking and there are other abnormal symptoms, it is recommended that you seek medical attention as soon as possible to avoid adverse effects.