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.

People who grind their teeth can sometimes develop a serious problem with their jaw, which left untreated, can adversely affect the teeth, gums and bone structures of the mouth. One of the most common jaw disorders is related to a problem with the temporomandibular joint, the joint that connects your lower jaw to your skull, and allows your upper and lower jaw to open and close and facilitates chewing and speaking.

People with temporomandibular joint disorders (TMD) often have a clicking or popping sound when opening and closing their mouths. Such disorders are often accompanied by frequent headaches, neck aches, and in some cases, tooth sensitivity.

Some treatments for TMD include muscle relaxants, aspirin, biofeedback, or wearing a small plastic appliance in the mouth during sleep.

Minor cases of TMD involve discomfort or pain in the jaw muscles. More serious conditions involve improperly aligned joints or dislocated jaws. The most extreme form of TMD involves an arthritic condition of the jaw joint.


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.