Hack Your Oral Health

At Biohacker Summit 2022 Helsinki, Sakari Nikinmaa Argued That The Mouth Was Never Just About Teeth

On Friday, 3 June 2022, at Biohacker Summit 2022 Helsinki in Helsinki, Finland, scientist and life science entrepreneur Sakari Nikinmaa delivered a presentation with a deceptively simple title: Hack Your Oral Health. What followed was not a standard talk about brushing, flossing or cosmetic dentistry. It was a sharp, unsettling account of how the mouth functions as both a biological frontier and a systemic threat, a place where chronic inflammation can begin quietly and travel widely.

Nikinmaa’s central claim was clear. Oral health dictated systemic health. The mouth, he said, was tied to the gut through the microbiome, to the heart through blood circulation, and to chronic disease through inflammation. In that framework, the teeth were not isolated structures but exposed platforms where disease could organize itself.

“Teeth are the body's only non-shedding surface, making them a special place where bacteria can attach and form chronic biofilm structures that do not naturally renew like the rest of our body,” Nikinmaa said.

Why Teeth Became A Refuge For Persistent Bacteria

The power of Nikinmaa’s talk lay in the way it reframed a familiar problem. Teeth, unlike skin or many internal surfaces, do not renew themselves every few days. That made them uniquely vulnerable. Bacteria could attach, settle, and begin building structured communities known as biofilms, layered colonies protected by an exopolysaccharide matrix that acted like a shield.

Inside those biofilms, the conditions changed. The pH could differ from the rest of the mouth. Bacterial diversity could shrink. More dangerous species could gain the upper hand. And once a biofilm matured, it became markedly harder to disrupt.

This was where the problem deepened. Antibiotics, oxygen and even the body’s own inflammatory defenses performed poorly against mature biofilms. These were not loose bacterial populations drifting in saliva. They were entrenched, cooperative, and stubborn.

Nikinmaa described chronic biofilms as the real enemy, not bacteria in general. “Oral bacteria are critical for immune defense and we cannot kill all of them, but chronic biofilms are the problem because they can withstand much more antibacterial pressure than regular bacteria.”

The Gum Line As A Battlefield

One of the most striking sections of the presentation focused on the gum line, where oxygen-rich and oxygen-poor zones create dramatically different bacterial environments. In the upper layers, aerobic bacteria consumed oxygen. Lower down, oxygen disappeared, allowing anaerobic pathogens to flourish.

Among them was Porphyromonas gingivalis, a bacterium Nikinmaa portrayed as especially dangerous. It was not merely a local irritant associated with gum disease. It had been implicated in immune evasion, tissue invasion and broader systemic effects. In the ecology of chronic oral inflammation, this was one of the organisms that transformed a dental problem into a body-wide risk.

His message was blunt: if harmful bacteria were allowed to thrive on the tooth surface and below the gum line, they could seed chronic inflammation that extended far beyond the mouth.

How The Mouth Sent Trouble Through The Body

Nikinmaa mapped three major pathways linking oral disease to systemic illness. The first was bacteremia, the passage of bacteria from inflamed gums or infected tooth structures into the bloodstream. The second involved bacterial toxins, which could contribute to tissue damage elsewhere in the body. The third was the inflammatory burden itself, reflected in markers such as C-reactive protein and interleukin-6.

“The blood acts as a taxi service, shuffling oral bacteria all around your body, which is why it is extremely important to prevent chronic inflammation of the teeth to protect your heart and systemic health,” he said.

This was not framed as a speculative link. Nikinmaa pointed to associations between dental disease and more than 200 chronic conditions, including diabetes, cardiovascular disease, cerebrovascular disease, chronic pulmonary disease, dementia, psoriasis and lung cancer. Some of those links remain more firmly established than others, but his broader point was difficult to ignore: chronic oral inflammation was not a niche issue. It was entangled with the biology of long-term disease.

In diabetes, he noted, the relationship was bidirectional. Periodontal disease could worsen systemic inflammation and increase insulin resistance, while poor diabetes control could, in turn, intensify periodontal damage. The mouth and the metabolic system fed each other’s decline.

Why Brushing Often Was Not Enough

If the science sounded daunting, the practical implication was worse. Even diligent brushing, Nikinmaa argued, often failed to fully remove oral biofilms.

He illustrated the mismatch in scale with memorable force. Bacteria existed in the micrometre range. Toothbrush bristles were vastly larger. The surface of enamel, meanwhile, was not smooth but pitted and irregular, full of microscopic niches where plaque could remain after cleaning.

“Removing microscopic bacteria with a toothbrush is like trying to remove sand from the road with a rake; you cannot remove it all, leaving residual biofilm where dental diseases can begin,” he said.

That image captured the quiet frustration at the heart of oral care. People could do many things right and still leave behind the biological scaffolding of disease. Mechanical cleaning remained essential, but in chronic cases it was not always sufficient.

The Promise Of Dual-Light Photodynamic Therapy

This was the point at which Nikinmaa turned from diagnosis to solution. His proposed answer was targeted photodynamic therapy, specifically a dual-light approach designed to inactivate harmful bacteria without wiping out the broader oral microbiome.

The idea was precise rather than indiscriminate. A non-active substance would be applied and then activated with light, producing a localized antibacterial effect only where and when the light was used. The therapy aimed to strike pathogenic biofilms on the teeth and gumline while preserving microbial diversity elsewhere in the mouth.

“Through targeted photodynamic therapy, we can revert the process of periodontal disease and help people keep their teeth by inactivating harmful bacteria without disrupting the necessary oral flora,” Nikinmaa said.

Nikinmaa, whose background spans protein and lipid biophysics, viral evolution and light-activated antimicrobial technologies, connected this work to his broader scientific interest in biological interactions and systemic consequences. He also described the practical expression of that work: LUMORAL, a home-use dental care kit developed by his health tech startup, built around patented dual-light antibacterial technology.

Clinical Ambition, Commercial Stakes

Nikinmaa told the audience that the technology had already been sold in Finland for two years and that early results had been promising. In severe cases of periodontal disease, he said, professional treatment using the method had helped reverse disease progression and preserve teeth that might otherwise have been removed.

He also pointed to around ten ongoing clinical trials, including what he described as the largest Nordic periodontitis study, as well as a newly published study on peri-implantitis with strong treatment results.

That note of clinical optimism gave the talk momentum, though it also underscored the tension common to modern health innovation: the overlap between urgent medical need and entrepreneurial promise. Nikinmaa was both scientist and startup leader, presenting not just an idea but a product category that sought to redefine home dental care.

A Lecture That Made Oral Health Feel Urgent

What made Hack Your Oral Health resonate at Biohacker Summit 2022 Helsinki was not simply its technological pitch. It was the way Nikinmaa took a routine subject and made it feel consequential, even political in the oldest sense of the word: about how bodies are governed, neglected and defended.

He asked the audience to see the mouth not as an isolated chamber but as a living gateway, one that could nourish or destabilize the rest of the body. In his account, the stakes of oral care were not confined to cavities, bleeding gums or cosmetic confidence. They extended to the heart, the metabolic system and the chronic inflammatory burden of modern life.

In that sense, the talk did what the best health presentations do. It stripped away the trivial language that often surrounds dental hygiene and replaced it with a more serious truth. Oral health was not peripheral. It was foundational.

Frequently asked questions

Why are teeth uniquely vulnerable?

Because they do not renew. Unlike skin or many internal surfaces, teeth are not replaced every few days, which lets bacteria attach, settle and build structured communities known as biofilms, layered colonies protected by an exopolysaccharide matrix.

What makes the gum line a battlefield?

Oxygen. In the upper layers aerobic bacteria consume it; lower down it disappears, allowing anaerobic pathogens to flourish. Among them is Porphyromonas gingivalis, the organism Sakari Nikinmaa treats as central to periodontal disease.

How does oral disease reach the rest of the body?

Nikinmaa mapped three pathways, the first being bacteremia: the passage of bacteria from inflamed gums or infected tooth structures into the bloodstream, which is what turns a dental problem into a systemic one.

About the event

This recap is part of the Biohacker Summit 2022 Helsinki series, recorded in Helsinki on 3 and 4 June 2022. Read the summary of the whole event or join the next edition, HOLOLIFE Summit 2026 Amsterdam, on 14 and 15 November 2026.