Dental Veneers are cosmetic dental prosthetics that are meant to cover the teeth. It is not exactly a prosthetic, in the sense that it replaces something that was lost (as in the case of dentures, dental bridges and dental implants.).
According to Wrong Diagnosis, one of the causes of mucus stools in children is bacterial overgrowth. Normally there is a certain amount of bacteria in the digestive tract. This is healthy and assists in digestion. But if it grows out of control, then it can contribute to mucus in the stool.
If you notice an increase in stool mucus that occurs regularly, or is accompanied by bleeding or a change in bowel habits, contact your doctor, the Mayo Clinic advises. That's because larger amounts of mucus associated with diarrhea may be caused by intestinal infections that require medical attention. Also seek medical attention for bloody mucus in your stool, or mucus accompanied by abdominal pain.