720 S River Rd Suite B-210, St. George, Utah 84790
Oral Microbiome Test

Oral Microbiome Test

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Brush up on the Bristle Oral Health Test:
FAQs about saliva testing to guide better oral overall health

Gateway Oral Health Center recognizes how insights into the mouth’s condition can provide clues to overall body health and vice versa. Likewise, the oral microbiome acts as a gateway, offering insights into the microorganisms in your mouth and indicating your risk of developing conditions near and distant from the mouth. Our biological dentistry team in St. George, Utah, prioritizes approaches to assessing the “oral environment” with services such as the Bristle Oral Health Test.

What do you mean by “oral microbiome”?

This term refers to a complex ecosystem of over 700 types of bacteria, fungi, viruses, and more. These microorganisms are present and may be detected in your saliva.

Why do these little microorganisms matter?

Balance is key. Some of these organisms are beneficial, whereas others are associated with dental and systemic diseases—ranging from gum disease to cardiovascular disease. When your oral microbiome or environment is “out of balance,” harmful species can grow out of control and contribute to developing disease that transcends the oral cavity. As a gateway to the body, the mouth can serve as a pathway for harmful bacteria linked to gum disease and other conditions to spread to other organs via the bloodstream.

How does Bristle test for these microorganisms and imbalances?

It’s easy! Just provide a small saliva sample for microbe analysis. On average, Bristle reports that more than 100 bacterial species are identified per sample. Based on our findings, a report is rendered with specific information about the nature and number of microbes present, the resulting disease risk, and personalized recommendations that go beyond merely “brush and floss.”

How do you use the Bristle test?

Bristle is a valuable tool. Our dentists, Drs. Bryce Eagar and Matthew Geddes will review the results with you. This helps us effectively communicate and educate patients like you about their individual needs and health status. Bristle is both proactive and an example of highly personalized medicine. Using the results and recommendations from the test, we can work to minimize any isolated risk factors. We can then stay ahead of the disease. Likewise, we can combat specific “bad bacteria” types to treat existing diseases with products and therapies proven to kill harmful microorganisms while leaving the beneficial bacteria alone. For instance, traditional mouthwashes and antibiotics kill all bacteria, not just the bad. However, Drs Eagar and Geddes can recommend techniques and products that work with beneficial microbes and are not against them.

How can I get started?

Schedule an appointment at Gateway Oral Health Center. The Bristle test and other diagnostics are fundamental to a dynamic hygiene program. Many of these tests can be easily incorporated into regular checkups at our St. George, UT office. Our team can be reached at (435) 656-0255.

Dr. Bryce Eagar best Biological Dentist St. George, Utah

Dr. Bryce Eagar

Connect with Dr. Bryce Eagar on LinkedIn

Dr. Bryce Eagar completed his undergraduate studies at the College of Southern Nevada and the University of Nevada in Las Vegas and attended dental school at the University of Minnesota in Minneapolis. He joined the Minnesota National Guard while in dental school and later transferred to the New Mexico National Guard. He retired from the US Army Reserves as a Major after serving for 13.5 years.                                                               

Dr. Eagar’s journey to becoming a biological dentist started with his and his family’s health. He is a Fellow of the American Academy of Oral Systemic Health and a member of the International Academy of Oral Medicine and Toxicology and the International Academy of Biological Dentistry and Medicine


Dr. Geddes Best Dr. Geddes is a skilled clinician in placing zirconia implants and treating cavitations

Dr. Matthew D. Geddes

Dr. Matthew D. Geddes earned his BS in Zoology and Chemistry from Weber State University and his DDS from Dalhousie University dental school (in 2006). He has worked as an associate and owner of a general dentistry practice. He is a Fellow of the International Congress of Oral Implantologists and a Fellow and Diplomate of the American Orthodontic Society. Dr. Geddes began learning about sleep and TMJ dentistry in 2018, which prompted him to enter the area of biological dentistry.