It's hard to think of two settings more different than a dentist's chair and a dog park. One hums with high-speed drills and anxiety; the other echoes with joyful barks and tail wags.
Yet increasingly, dentists across the country are discovering that a little fur and affection can go a long way toward easing fear — and improving care.
I had that epiphany recently when I was about to have a broken filling replaced, and my dentist asked whether I'd like to have Bailey, his 30-pound Bernedoodle, sit on my lap during the procedure. And here we are:
Author Henry I. Miller in the dentist chair with Bailey the Bernedoodle. Courtesy Shawn Sharma
Dental anxiety is one of the most common phobias worldwide. One survey found that as many as 40% of adults delay or avoid dental visits because of fear. That often leads to neglected oral health, which can lead to systemic disease.
Well, what if, instead of reassurance and possibly a sedative, the answer came on four legs?
That question is being answered by a growing body of research on therapy animals in medical and dental settings — and the results are striking (albeit not surprising for us dog lovers).
In a 2023 review conducted at Loma Linda University's School of Dentistry, researchers found that patients who interacted with therapy dogs before or during treatment showed measurable decreases in blood pressure, heart rate, and self-reported anxiety. Dentists who participated in the study described calmer patients, smoother procedures, and a friendlier office atmosphere. Compared with costly pharmacologic sedation, a therapy dog was "a remarkably cost-effective adjunct," the authors concluded.
A separate pilot study published in the journal Animals found that even brief exposure to a calm, trained dog significantly reduced measures of dental anxiety compared to control groups. The presence of the animal altered both physiology and perception: Patients smiled more, gripped the chair less, and reported that the visit "went by faster."
Clinical studies have found that interaction between dental patients and dogs lowers heart rate and blood pressure and triggers parasympathetic nervous activity — the body's built-in relaxation system. That translates to less need for sedation, faster recovery, and more positive associations with oral health. In a profession where patient avoidance can undo preventive care, those changes matter.
These findings echo what psychologists have long observed about the "biophilia effect" — the innate human response to nonjudgmental companionship from animals. When we stroke a dog, oxytocin levels rise, cortisol (the stress hormone) drops, and the nervous system shifts from fight or flight to rest and digest. In a dental chair, that is exactly what every clinician hopes for.
Dentists who have used therapy dogs report benefits that extend beyond the patient. Staff morale improves, waiting rooms feel friendlier, and even the most apprehensive new patients are easier to engage. A 2020 article from the University of Colorado's School of Dental Medicine described how Lucy, a golden retriever, transformed the clinic atmosphere: Patients began showing up early just to greet her, and students said the once-tense clinic felt more like a community.
Other practices have discovered similar results. A 2023 report chronicled a dental team that adopted an emotional support dog after noticing how anxious children reacted to their hygienist's service animal. Within months, cancellation rates declined and repeat visits increased. "She's our best marketing tool," the dentist joked, "but more importantly, she's our best medicine."
Most important of all is the potential public health impact. Dental anxiety contributes to untreated cavities, gum disease, and even systemic inflammation linked to heart disease and diabetes. If a wagging tail can bring people back to the dentist, the ripple effects could improve health far beyond the mouth.
Critics sometimes worry about infection control or allergies, but professional guidelines and training programs are addressing those concerns. The Loma Linda review emphasized that animals must be specifically trained for therapy use, supervised by a handler, and kept out of sterile zones during certain procedures. Offices that disclose the dog's presence in advance and offer alternative appointments for allergic or fearful patients report few problems. OSHA guidance now recognizes therapy animals as compatible with dental safety standards when proper protocols are followed.
Indeed, the therapy dog has evolved from novelty to credible member of the care team — complete with vaccination records, grooming schedules, and job descriptions. Some practices even feature their canine colleague on the staff page, right between the hygienists and front-desk coordinators.
The same instinct that makes therapy animals invaluable in hospitals, nursing homes, counseling sessions, and comforting first responders applies in the dental chair. They remind us that medicine is not just about fixing bodies but also calming minds. And for the anxious dental patient, the presence of a dog could make the difference between dread and relief — and perhaps between neglect and lifelong oral health.
Henry I. Miller, a physician and molecular biologist, is the Glenn Swogger distinguished scholar at the Science Literacy Project. His best friend is Asta, a Bedlington terrier.