Why We Test for Biocompatibility

June 9, 2026
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Posted By: Katie To, DDS

Imagine taking a medication without anyone checking whether you're allergic to it. Sounds reckless, right?

Now consider this: most dental offices place fillings, crowns, implants, and other materials in patients' mouths every single day — materials that stay there for years, sometimes decades — without ever checking whether the patient's body is actually compatible with them.

At our biological dental office, we do things differently. Before we place anything permanent in your mouth, we test for biocompatibility.

Your Mouth Is an Open Door

Whatever sits in your mouth doesn't just sit there. It's bathed in saliva, exposed to heat, chewing forces, acids, and bacteria — and it leaches, however slightly, into the rest of your body. Every day. For as long as it's in there.

Some people tolerate certain materials beautifully. Others react — sometimes obviously, often subtly. Headaches, fatigue, chronic inflammation, autoimmune flares, gut issues, skin problems, brain fog. The connections aren't always made, because no one thought to look in the mouth.

What Biocompatibility Testing Actually Is

Biocompatibility testing is a simple blood test that screens your immune system's reactivity to hundreds of dental materials — composites, cements, metals, ceramics, sealants, and more.

The result is a personalized report that tells us:

  • Which materials your body shows reactivity to
  • Which materials are likely safe and well-tolerated
  • Which options we should completely avoid for you

We then use that report to choose materials specifically suited to your biology — not a one-size-fits-all standard.

Why This Fits the Biological Dentistry Philosophy

Conventional dentistry tends to ask, "What's the standard material for this procedure?"

Biological dentistry asks, "What's the right material for this patient?"

Those are very different questions. The first treats every mouth like every other mouth. The second recognizes that you have a unique immune system, unique sensitivities, and a unique medical history — and that dental work should respect all of it.

This is especially important for patients who are:

  • Dealing with chronic illness or autoimmune conditions
  • Sensitive to metals, chemicals, or environmental triggers
  • Recovering from mercury amalgam exposure
  • Trying to reduce their total body burden
  • Simply committed to making informed, intentional choices about their health

What This Looks Like in Practice

When you come to us for restorative work — a filling, crown, implant, or anything that will live in your mouth long-term — we don't reach for whatever's in the drawer. We talk with you about whether biocompatibility testing makes sense, review your results if you have them, and select materials with your individual biology in mind.

It's a small extra step. The payoff is huge: dental work that supports your health instead of quietly working against it.

This Is What Personalized Dentistry Actually Means

A lot of offices use the word "personalized." For us, it's not marketing — it's a measurable, lab-verified process. Biocompatibility testing turns "what's best for you" from a guess into an answer.

Because what goes in your mouth goes in your body. And your body deserves to be asked first.