A 2022 study in Frontiers in Dental Medicine found that each additional preventive dental visit was associated with meaningfully lower hospital spending among people with diabetes.1 Three limits matter: the population was a high-risk Medicaid group, the study was observational (association, not proven cause), and we deliberately don't quote its dollar figure, because a number from one high-risk population doesn't transfer to everyone.
What did the study find?
A large 2022 study published in Frontiers in Dental Medicine found that each additional preventive dental visit was associated with meaningfully lower hospital spending in people with diabetes.1 It examined the relationship between preventive dental care and medical spending in that group, and the result caught attention well beyond dentistry.
On its face, that's a remarkable pattern. It suggests the humble dental checkup might ripple outward into the far more expensive world of hospital medicine: that keeping gums and teeth healthy could show up, eventually, on a hospital ledger. And for people with diabetes there's a plausible biological story behind it, since gum disease and blood-sugar control are known to interact.
But this is exactly the kind of finding that gets flattened into a slogan. So before it becomes one, it's worth walking through what the study can and cannot support.
What are the study's limits?
First: the population. The study followed a high-risk Medicaid group: people with diabetes in a program serving lower-income patients, who tend to carry heavier disease burdens and face more barriers to care. Findings from a high-risk group don't automatically transfer to the general population. Where disease burden is highest, prevention has the most room to show an effect; the same dental visit in a healthier, lower-risk population might be associated with a much smaller difference, or none that's measurable.
Second: association, not proven cause. This was an observational study, not a randomized trial. People who keep preventive dental appointments likely differ from people who don't in many ways that also affect hospital use: how they manage their diabetes, whether they attend other medical appointments, and other health behaviors. Researchers adjust for what they can measure, but no adjustment fully rules out the possibility that the dental visits are partly a marker of engaged patients rather than purely a cause of lower spending.
Third: the dollar figure. The study attached a specific dollar amount to each added visit. We're deliberately not quoting it. A precise number from one study of one high-risk population is exactly the kind of statistic that escapes its context and gets stamped onto every population, so we'll say what the evidence supports at the right resolution: the association was with meaningfully lower hospital spending, in that population.
The honest reading: in a high-risk group with diabetes, more preventive dental care went hand in hand with meaningfully lower hospital spending. That's worth knowing. It is not a guarantee, and it is not a universal dollar figure.
Does any other evidence point the same way?
Yes, and that's what makes the Frontiers result more than a curiosity. It rhymes with the best-known study in this literature: a 2014 analysis in the American Journal of Preventive Medicine by Jeffcoat and colleagues, covering over 330,000 insured members, which found that treating gum disease was associated with roughly a 40% reduction in annual medical costs for members with diabetes.2
The same caveats apply there: it's a claims-based association, not a randomized trial, and it concerns professional periodontal treatment, not home habits or checkups alone. But the two studies point in the same direction from different angles: in people with diabetes, dental care and medical costs appear to be connected. We examine the Jeffcoat findings, and that whole line of evidence, in treating gums and lower medical costs.
How should you read this literature?
The preventive-dental-care-to-medical-savings literature has a consistent shape, and it's worth learning to recognize: the findings are promising, the direction is fairly consistent, the strongest signals show up in high-risk groups (especially people with diabetes), and nearly all of it is observational. That shape supports genuine optimism about prevention, whose category-level economics are better documented and which we lay out in the honest evidence that prevention pays. It does not support treating any single study's number as a universal fact.
This is the meta-lesson, and it's really the thesis of this whole library: the difference between "a large study associated preventive visits with lower hospital spending in a high-risk group" and "dental checkups save the health system money" is the difference between evidence and marketing. The first is true and useful. The second is the slogan the first too often becomes.
Reading the evidence carefully doesn't weaken the case for prevention; it's what makes the case trustworthy. If you want to see how we grade claims like these across the site, that's laid out in how we source.
Common questions
Do preventive dental visits lower your hospital costs?
Nobody has proven that. A 2022 study in Frontiers in Dental Medicine found that among people with diabetes in a high-risk Medicaid population, each additional preventive dental visit was associated with meaningfully lower hospital spending.1 That is an observational association in one specific group, not proven cause and effect, and not a general finding about everyone.
Why doesn't this page quote the study's dollar figure?
Because a precise number from one study of one high-risk population is exactly the kind of statistic that escapes its context and gets stamped onto every population. The evidence supports saying the association was with meaningfully lower hospital spending, in that population, and no more than that.
Do the findings apply to people who don't have diabetes?
That isn't established. The strongest signals in this literature come from high-risk groups, especially people with diabetes, where disease burden is highest and prevention has the most room to show an effect. The same dental visit in a healthier, lower-risk population might be associated with a much smaller difference, or none that's measurable.
What did the Jeffcoat study find?
A 2014 analysis in the American Journal of Preventive Medicine covering over 330,000 insured members found that treating gum disease was associated with roughly a 40% reduction in annual medical costs for members with diabetes.2 It is a claims-based association rather than a randomized trial, and it concerns professional periodontal treatment rather than home habits or checkups alone. We cover it in treating gums and lower medical costs.
- Lamster IB, Malloy KP, DiMura PM, et al. Preventive dental care is associated with improved healthcare outcomes and reduced costs for Medicaid members with diabetes. Frontiers in Dental Medicine, 2022;3:952182. doi:10.3389/fdmed.2022.952182. frontiersin.org. New York State Medicaid members aged 42–64 with diabetes. Observational; association, not proven causation. Population-specific: findings should not be generalized beyond the studied group.
- Jeffcoat MK, et al. Impact of periodontal therapy on general health: evidence from insurance data for five systemic conditions. American Journal of Preventive Medicine, 2014. PMID 24953519. Retrospective claims analysis; association, not proven causation; concerns professional periodontal treatment.