Your mother probably told you not to let your dog kiss you on the mouth - so maybe you listened. A new study on human and canine periodontal disease is out to vindicate your mother.
The research, conducted by members of the department of pediatric dentistry at the Osaka University Graduate School of Dentistry in Japan, focused on the distribution of periodontal bacterial species in oral specimens taken from dogs and their owners.
Plaque specimens collected from 66 dogs and 81 members of their families were analyzed and bacterial DNA was extracted from each specimen. Both dogs and humans have some types of periodontal bacteria in common, but the researchers found some bacteria more common among dogs and people who had 'close contact' with each other.
So, yes you can acquire periodontal bacteria from your dog, but your dog can acquire your periodontal bacteria too. Whatever your mom's reason for telling you not to kiss your dog on the mouth, your mother was right.
sources: PubMed, WTOP News