Dental health plays a big role in a dog’s overall health and wellbeing. Unfortunately, certain dog breeds are prone to dental issues. Dental disease affects a dog's teeth and gums, can cause bad breath, infections, tooth loss, and even life-threatening organ failure if left untreated. Knowing which dental issues your dog is prone to can help you provide them with the care they need and deserve. The following 8 popular dog breeds are genetically prone to dental problems. 1.) Yorkshire Terrier Small breeds like Yorkies often have baby teeth that come in right on top of their adult teeth. When this happens, food will collect in those areas leading to tartar and plaque buildup. Over time, bad breath and tooth decay can occur.