Night Guard


B. Jeffrey Kay, DDS

General Dentist and Cosmetic Dentist located in San Mateo, CA

Do you often wake up with a sore jaw and sensitive teeth? If so, you may grind your teeth at night. At the San Mateo, California, office, B. Jeffrey Kay, DDS Dentistry creates custom-fit night guards for individuals who grind their teeth at night. Teeth grinding is a common condition that tends to get worse without the right treatment. To relieve pain and protect your teeth from damage, call B. Jeffrey Kay, DDS Dentistry or schedule an appointment online today.

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Night Guard Q & A

What is a Night Guard?

A night guard is a special type of mouth guard that protects your teeth from damage and pushes your bite into a more comfortable position. It also relieves pressure from the joints and muscles in your jaw if you clench your jaw while sleeping.

What does a Night Guard treat?

Dr. Kay may recommend a night guard for you if you have:


Bruxism, or teeth grinding, happens when your teeth rub together. What makes bruxism especially difficult to treat is that most people grind their teeth while they sleep. This can damage your teeth by wearing down your enamel. 


Temporomandibular joint disorder (TMJ) is a condition that affects the hinge-like joints in your jaw. These joints are important for helping your chew and speak comfortably. If the joints or jaw muscles become damaged, you can develop chronic jaw pain.

Jaw clenching

Jaw clenching is a common symptom of bruxism, TMJ, and stress. When you clench the muscles surrounding your jaw, they become tight and sore, leading to pain and discomfort.

Chronic headaches

Chronic headaches can result from stress, TMJ, and bruxism. Constant jaw clenching also puts pressure on your teeth and jaw, which can lead to tension headaches.

How does a Night Guard work?

A Night Guard cushions and protects your teeth by providing a soft barrier. These guards are custom made, so they fit perfectly on your top or bottom teeth.

Night guards help your jaw relax in a position that relieves pressure from your teeth and temporomandibular joints. Not only does this relieve pain, but it also promotes a better night’s sleep.

The most important function of a night guard is to stop your teeth from grinding together, protecting them against enamel wear, cracks, and chips.

How is a Night Guard made?

After evaluating your teeth and gums, Dr. Kay takes highly accurate impressions of your mouth to create your custom-fit night guard. This mold is sent to a dental lab, which creates your mouth guard out of a cured plastic material.

Dr. Kay shows you how to wear your night guard at your next visit. It should feel snug and comfortable while you sleep. If necessary, he can make adjustments to ensure it fits properly.

If you’re ready for a custom-fit night guard, call B. Jeffrey Kay, DDS Dentistry or schedule an appointment online today.

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255 N San Mateo Dr, Suite 3, San Mateo, CA 94401

Office Hours

MON - WED8:00 am-5:00 pm

THU9:00 am-6:00 pm

FRI9:00 am-2:00 pm

SATBy appointments only