Integrative healthcare is here — and your dentist is more important than you think

Here's something that may surprise you: for most of history, your doctor and your dentist were the same person. 

Medicine and dentistry were a single discipline — until around 1840, when a professional disagreement in Baltimore sent them down separate paths. 

Nearly two centuries later, most of us are still feeling the consequences of that split. But that's finally beginning to change.

The rise of integrative healthcare — a model that treats the body as one interconnected system rather than a collection of isolated parts — is quietly reshaping how forward-thinking dentists and physicians approach patient care. 

And for millions of people who have spent years cycling through appointments, prescriptions, and unanswered questions, this shift couldn't come soon enough.

In this article, you'll learn why the medical-dental divide happened, what the research now tells us about the oral-systemic connection, and what truly integrative, holistic dental care looks like in practice. 

There's also some genuinely useful information toward the end about how you can take action right now — so stay with me.

Key takeaways

• Medicine and dentistry were unified until the 1840s — their separation was a professional decision, not a biological one.¹
• The mouth and body are deeply interconnected; what happens in your oral cavity directly impacts systemic health.¹,² ³
• Periodontal disease is associated with cardiovascular disease, Type 2 diabetes, Alzheimer's disease, adverse pregnancy outcomes, and more.¹,² ³
• Integrative healthcare is a growing movement that reconnects oral and medical care for better patient outcomes.
• Functional dentistry goes beyond drilling and filling — it asks why disease is happening and addresses root causes.
• Treating gum disease has been shown to improve systemic markers of cardiovascular health.⁶,⁷
• Oral microbiome testing gives you actual data about the bacteria driving your symptoms — so you can stop guessing and start healing.

The split that changed everything

In the late 1830s and early 1840s, a group of dental practitioners in Baltimore attempted to have dental instruction added to the medical curriculum at the University of Maryland. 

The proposal was rejected. Dentists founded their own schools, their own journals, and their own professional identity — separate from medicine, separate from the rest of the body. 

The AMA Journal of Ethics describes this as "the historic rebuff," a divide that has shaped how healthcare is delivered ever since.¹

For a long time, that separation seemed manageable. 

Dentists became extraordinarily skilled at the mechanics of the mouth — drilling, filling, extracting, restoring. 

But the curriculum drifted away from asking a deeper question: why is disease happening in the first place?

As one expert who appeared in our Gateway to Health documentary series put it, dentists were trained to be excellent surgeons of the mouth, but not necessarily investigators of the underlying biology. 

The result was a profession that became, as some have bluntly called it, focused on "molar mechanics" over root-cause medicine.

To be clear: this isn't a criticism of dentists — most are extraordinarily dedicated clinicians. It's a structural critique of a system that divided one body into two separate worlds and made collaboration the exception rather than the rule.

What conventional dentistry misses

When you visit a traditional dental office, the focus is largely on structural health: cavities, crowns, plaque, and gum disease are treated as local problems. That's valuable care.

But it operates within a narrow lens that doesn't always account for what's happening in the rest of your body.

Here's what the research is now making impossible to ignore: oral health and systemic health are deeply, bidirectionally linked.¹,² ³ 

The same periodontal disease your dentist treats as a gum problem has been associated with cardiovascular disease, Type 2 diabetes, Alzheimer's disease, rheumatoid arthritis, adverse pregnancy outcomes, and several cancers.¹,² ³

The mechanism isn't mysterious. 

Oral bacteria — especially the pathogenic strains that thrive in an imbalanced microbiome — can enter the bloodstream through inflamed gum tissue.

From there, they can adhere to arterial walls, trigger systemic inflammation, cross the blood-brain barrier, and disrupt blood sugar regulation.² ³ 

A 2025 study published in Scientific Reports found statistically significant associations between periodontitis and diabetes, and between dental caries and hypertension, in a cross-sectional analysis of 13,772 adults.⁴

This isn't fringe science. 

A 2021 paper published in Periodontology 2000 — drawing on the updated U.S. Surgeon General's report on oral health — explicitly documented the call for integrated oral, medical, and behavioral health care as a public health priority.⁵

The problem isn't that dentists don't know this. Many do. The problem is that the healthcare system isn't built to act on it — yet.

What the integration era actually looks like

This is where it gets genuinely exciting. 

A 2023 paper published in the Journal of Esthetic and Restorative Dentistry describes "integrative oral medicine" — a formal collaboration between dental and medical providers — as the foundation for giving patients a real shot at improved long-term health outcomes.⁶

Here's a snapshot of how care has shifted:

The American Academy for Oral Systemic Health (AAOSH) is one of the most visible signs of this shift — an organization entirely dedicated to bridging the gap between dentists and physicians through shared education, research, and patient care frameworks.

At the clinical level, we're also seeing something important: treating periodontal disease improves systemic outcomes. 

Research published in Periodontology 2000 and the Journal of Esthetic and Restorative Dentistry shows that periodontal therapy reduces systemic inflammation markers and can improve glycemic control in diabetic patients.⁵,⁶ 

In other words, what we do in the mouth has measurable effects on the whole body.

What functional dentistry does differently

My own path into functional dentistry was shaped by exactly this gap. 

I trained at the University of the Pacific — one of the top dental schools in the country — and spent years in clinical practice before I started connecting dots that conventional dentistry doesn't always teach you to connect.

A patient comes in with recurring cavities. Standard care: fill them. Functional care: ask why they keep coming back. 

What's the bacterial profile in their mouth? What's their diet doing to their oral pH? Is systemic inflammation playing a role?

This is what holistic dental care actually means — not just the absence of toxins in your materials (though that matters too), but a whole-person lens on oral disease. 

It's what I'd call biological dentistry as the roadmap and functional medicine as the blueprint: using a patient's individual microbiome, genetics, and health history to create care that's actually personalized.

The oral microbiome is central to this. Your mouth is home to hundreds of bacterial species, and the balance between them determines far more than whether you get a cavity. 

Oral bacteria and gut health are directly connected — every time you swallow, bacteria from your mouth travel into your digestive tract. 

An imbalanced oral microbiome can contribute to gut dysbiosis, and vice versa. It's a loop that conventional siloed care never quite addresses.

One of my patients, Sarah, had been dealing with fatigue and recurring cavities for years before she tested her oral microbiome. 

The results revealed a specific bacterial imbalance she'd had no idea about. Three months after following her personalized protocol, she wrote to us: 

"I actually have energy again and my gums stopped bleeding." That's not magic — that's what happens when you stop guessing and start working with real data.

How to know if your care is missing something

Here are a few honest questions worth sitting with:

Does your dentist ask about your overall health? 

A functional or holistic dentist reviews your full health history, not just your teeth. 

Heart disease, diabetes, autoimmune conditions — these all have oral manifestations that an integrative provider will take seriously.

Does your doctor ask about your oral health? 

They probably don't — and that's the system gap in action. 

A 2025 scoping review published in Healthcare (Basel) found that despite growing evidence of oral-systemic links, the integration of dentists into interprofessional healthcare teams remains limited.⁸ 

You may need to be the one who brings the conversation to both sides.

Are you being treated generically? 

If every patient in your dentist's chair gets the same protocol, that's a sign that personalized dental care isn't part of the equation.

True integrative care — what's also being called precision dentistry — starts with understanding your specific biology, not applying a one-size-fits-all solution.

Have you ever tested your oral microbiome?

Most people haven't. 

And yet knowing exactly which bacterial strains are present in your mouth — and which ones are working against you — is the most direct path to targeted, effective care.

What you can do right now

The integration era is here, but it isn't fully mainstream yet. That means most patients still need to be proactive.

Here's where to start:

First, bring up the oral-systemic connection with both your dentist and your physician.

Ask if they communicate with one another. The fact that you're asking signals that you understand the connection — and it can shift the dynamic.

Second, consider testing your oral microbiome. 

The Gateway to Health Orobiome Testing Package gives you a comprehensive picture of the bacterial landscape in your mouth, along with a 1-on-1 review call with a licensed oral health professional on my team, and a personalized healing protocol. 

It's not a standard dental checkup — it's the data your care has been missing.

Third, get educated. 

The oral-systemic connection is one of the most important — and most overlooked — stories in modern health. 

The more you understand it, the better equipped you are to advocate for yourself in any clinical setting.

We built Gateway to Health because we believe you deserve a healthcare experience that doesn't stop at your gumline. Your mouth is not a separate system. It never was.

Conclusion

Nearly 185 years after that moment in Baltimore, the walls between medicine and dentistry are starting to come down — slowly, but meaningfully. 

Integrative healthcare is no longer just a philosophy. 

It's a clinical movement backed by evidence, driven by practitioners who refuse to treat the mouth as if it exists in isolation from the rest of the body.

If you've been living with unexplained fatigue, recurring dental problems, or chronic symptoms that conventional care keeps calling "normal," the answer may be sitting in your oral microbiome right now.

The research is there. The tools are available. The only thing left is to use them.

Start with the Orobiome Test →

Or if you'd like to go deeper into the science first, watch the Gateway to Health series free for 10 days — and meet the experts who are leading this integration era forward.

About the Author

Dr. Elmira Shojai is a Doctor of Dental Surgery with over 18 years of hands-on clinical experience revolutionizing how we understand the connection between oral health and whole-body wellness.

After graduating from the University of the Pacific, consistently ranked among the world's most prestigious dental schools, Dr. Elmira spent over a decade in active clinical practice in California, where she treated thousands of patients and discovered patterns conventional dentistry was completely missing.

Time and again, she witnessed patients with perfect oral hygiene developing gum disease, recurring cavities, and chronic bad breath — symptoms that pointed to deeper systemic issues.

She saw patients with heart disease, diabetes, and autoimmune conditions who had severe oral infections that no one had connected to their declining health.

These clinical observations led her to functional dentistry and oral microbiome science.

In May 2025, Dr. Elmira made a pivotal decision: transition from one-patient-at-a-time clinical practice to leading Gateway to Health as Chief of Dental Programs, where she could scale her impact to reach thousands.

She now oversees a nationwide network of licensed dentists who provide personalized consultations based on cutting-edge oral microbiome testing — the same testing she wishes she'd had access to throughout her clinical career.

Featured as a leading expert in the Gateway to Health documentary series alongside her husband, Dr. Pedram Shojai (NYT bestselling author and founder of The Urban Monk), Dr. Elmira brings real-world clinical experience to every educational resource, protocol, and patient consultation.

Her mission is clear: bridge the dangerous gap created when medicine and dentistry split in the mid-1800s, and help people understand that the mouth isn't separate from the body — it's the gateway to systemic health.

Sources

1. Education Solutions to the Medical-Dental Divide, AMA Journal of Ethics, 2022.
2. Periodontal Health and Disease in the Context of Systemic Diseases, Mediators of Inflammation, 2023.
3. Oral-systemic connection: A narrative review of the role of oral health in the prevention and management of systemic diseases, Journal of Dental and Allied Sciences, 2025.
4. Investigating the link between oral health conditions and systemic diseases: A cross-sectional analysis, Scientific Reports, 2025.
5. Oral Health's Inextricable Connection to Systemic Health, Periodontology 2000, 2021.
6. Integrative oral medicine: Dentistry's role in improving health outcomes, Journal of Esthetic and Restorative Dentistry, 2023.
7. Evidence that periodontal treatment improves biomarkers and CVD outcomes, Journal of Clinical Periodontology, 2013.
8. Integrating Dentistry into Interprofessional Healthcare: A Scoping Review on Advancing Collaborative Practice and Patient Outcomes, Healthcare (Basel), 2025.