Dentist - St Johns
2220 CR 210 West, Suite 312
St Johns, FL 32259
(904) 825-9960

(904) 825-9960
2220 CR 210 West, Suite 312
St Johns, FL 32259

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Online Dental Education Library

Our team of dental specialists and staff strive to improve the overall health of our patients by focusing on preventing, diagnosing and treating conditions associated with your teeth and gums. Please use our dental library to learn more about dental problems and treatments available. If you have questions or need to schedule an appointment, contact us.

Plaque is an insidious substance—a colorless, sticky film—that blankets your teeth and creates an environment in which bacteria erode tooth enamel, cause gum irritation, infection in inner structures such as pulp and the roots, and in extreme cases, tooth loss.

Some of the biggest culprits causing plaque are foods rich in sugar and carbohydrates, including soda beverages, some juices, candy and many kinds of pasta, breads and cereals.

Plaque also can attack fillings and other restorations in your mouth, which can lead to more costly treatment down the road.

Plaque is the main cause of tooth decay.  It can also cause your gums to become irritated, inflamed, and bleed. Over time, the plaque underneath your gums may cause periodontal disease, which can lead to bone loss and eventual tooth loss.

Inside your teeth, decay can gradually destroy the inner layer, or dentin.  It can also destroy the pulp, which contains blood vessels, nerves and other tissues, as well as the root. 

Periodontal disease is advanced gum disease. This serious condition occurs when the structures that support your teeth—the gums and bone—break down from the infection.  Pain, hypersensitivity and bleeding are some of the signs of periodontal disease.

Simple Preventative Measures

The two best defenses against tooth decay and gum disease are a healthy, well-balanced diet and good oral hygiene, including daily brushing with fluoride toothpaste, flossing and rinsing. Most public drinking water contains fluoride, but if you are unsure of your water supply, then use a good quality mouth rinse containing fluoride.

A good way to help your oral health between brushing is chewing sugarless gum; this stimulates your body's production of saliva, a powerful chemical that actually neutralizes plaque formation and rinses decay-causing food particles and debris from your mouth.

In some cases, our office can prescribe anti-cavity rinses or apply special anti-cavity varnishes or sealants to help fight decay.


Dr. John Joyner

Dr. Joyner established St Johns Dental as a cosmetic and family dental practice in 2003.  His goal is to provide high quality dentistry and a caring, gentle environment for his patients.  Dr. Joyner grew up in Mississippi where his father was a United Methodist minister.  Dr. Joyner graduated from the University of Mississippi School of Dentistry in 1991. He is currently also an Instructor for the University of Florida Dental School.  He supervises dental students as they complete their clinical rotations at The Sulzbacher Center in Jacksonville Beach, FL.

Read more about Dr. John Joyner

Questions or Comments?
We encourage you to contact us whenever you have an interest or concern about our services.