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.
Ulcerative colitis can cause blood and mucus in the stool. Other symptoms include urgency in passing stool and passage of stools during the night time. Crohn's disease is less likely to cause passage of blood in the stool, but this may also occur in some cases.