There is no reason to avoid routine teeth cleanings during pregnancy, and in fact, it is particularly important to keep your appointment as scheduled. The way that pregnancy affects the body can cause an increased risk of tooth decay and gum disease. The gums have a tendency to become inflamed during pregnancy, increasing the risk of gum disease and tooth decay. Morning sickness that results in vomiting can cause stomach acid to erode the enamel on your teeth, making them more susceptible to decay. The baby also tends to syphon nutrients from the mother while in the womb, including calcium that supports tooth health, leaving mom’s teeth weaker than before.