TMJ (temporomandibular joint syndrome) can cause pain and discomfort within the jaw and even the face. So, childhood TMJ is particularly uncomfortable. Parents have a number of treatment choices and the good news is that a dentist will provide them with professional suggestions.
How can TMJ be alleviated at an early age?

- Dental appliances known as splints can be applied and are quite effective.
- Orthodontists could suggest other non-invasive treatments including mouth guards.
- Parents should always discourage bad habits such as teeth grinding and chewing very hard substances (such as candy).

Symptoms and causes are listed below:
https://yourdentalhealthresource.com/tmj-treatment-options-for-children/