Should dentists care about Vitamin D levels?

We often treat Vitamin D like a “nice to have” supplement, but in dentistry it may be more important than that. It does play a real role in bone metabolism, immune regulation, and inflammation control—all things dentistry deals with every day.

Vitamin D and implant healing

Dental implants rely on predictable osseointegration. That process depends on osteoblast activity, bone turnover, and a controlled inflammatory response. Vitamin D directly influences all three so it seems reasonable that may have an impact.

However, so far the research has not really shown us much. This may have something to do with the fact we aren’t truly studying it properly. The studies all take an initial vitamin D measurement but the implant healing process occurs over several months. During these months many people will have their vitamin D level change and we are not measuring. Since for most of the country the Vitamin D levels will fluctuate with the season this “initial measurement only” approach is very problematic. It is particularly troubling because a high level reading of Vitamin D can have a much lower average level over a 3-6 month healing process and vice-versa for low initial levels. An example of this initial reading study is Francis JOI 2024. That study only tests vitamin D at the start of a 3-6 month process though.

How can this be better studied? A large study looking at the placement month in a northern hemisphere would be very helpful. Ideally knowing whether or not they take supplements or travel is needed as well. In a perfect world monthly Vitamin D blood tests can be done. My opinion is that we would find a very small increased risk for failure that would take thousands if not tens of thousands to be found.

Vitamin D and apical lesion healing

Chronic apical periodontitis isn’t just a bacterial issue—it’s an immune response problem. Vitamin D modulates both innate and adaptive immunity and has antimicrobial effects through regulation of cathelicidin and defensins. According to Maraş in IEJ 2025, optimizing vitamin D levels by supplementation, when appropriate, may be beneficial for the healing process of teeth with periapical lesions. Lesion area reduction was significantly greater in the vitamin D group of their study.

In plain terms: if the immune system is underperforming, bone repair around the apex can lag—even after technically sound endo.

What this means clinically

Vitamin D in dentistry is not a major concern. Low levels of vitamin D doesn’t mean dentists should prescribe vitamin D blindly. It does mean that for implant patients or teeth having treatment with an apical lesion is a variable worth considering. Ignoring systemic factors while blaming “bad luck” isn’t good medicine—or good dentistry.