Tooth Anatomy: Know The Parts Of Your Teeth

Have you ever wondered what makes up a tooth? Each part of a tooth has unique functions and properties. Aetna's Simple Steps to Better Dental Health lists major parts of tooth anatomy, including enamel, dentin, cementum, root(s) and the root canal chamber(s) inside the tooth. Damaged teeth, especially teeth with cracked or eroded enamel, are very susceptible to cavities. Advanced gum disease, another oral health condition that threatens tooth health, attacks the bone of the teeth and may cause tooth loss. Understanding the function of each part of a tooth and the steps required to keep teeth healthy with home care and regular checkups are important components of oral health education for you and your family.

Tooth Enamel

Tooth enamel is a protective barrier that surrounds the visible part of the tooth. It is composed of strong minerals, including calcium phosphate. Tooth enamel is the hardest substance in the human body, and healthy enamel is resistant to cavity-causing bacteria. Because of its mineral composition, tooth enamel is translucent. Fortunately, enamel can be strengthened. Fluoride, a common mineral, helps replenish deficits in tooth enamel. Parents can help replenish enamel at home with Colgate® toothpastes that contain fluoride. Dentists also offer special fluoride treatments. These are commonly administered to children to help keep their teeth strong and free from cavities.

Dentin

Dentin is found underneath the enamel surface of the tooth and underneath the cementum that forms along a tooth's roots. Made of living cellular material and tissue, dentin is what makes up the majority of a tooth's structure. Dentin is a bone-like substance that contains microscopic tubules. Unlike enamel, exposed dentin is highly susceptible to the bacteria that cause dental cavities and can cause tooth sensitivity.

Cementum

Cementum is a coating that surrounds the roots of teeth and is similar to enamel, but softer. Cementum assists with root stability by attaching to the fibers that anchor the tooth in the jawbone.

Roots

Much as a tree's roots help anchor it in the ground, a tooth's roots anchor it in the jawbone. This allows teeth to withstand the force of biting and chewing food on a daily basis. According to the American Academy of Periodontology, one major threat to the health of a tooth's roots is periodontal disease. This oral care disease is caused by bacteria in the dental plaque invading the gum tissue and supporting bone, thus leading to destruction of the bone holding the tooth or teeth in place. Tooth roots are integral to maintaining dental health. Even children can develop gum disease. Maintaining healthy oral hygiene practices — including thorough flossing and brushing — is an easy way to keep mouths healthy with home care. Regular dental cleanings for you and your family will also combat tartar and, ultimately, gum disease.

Root and Pulp Canals

Located inside the tooth in a hollow chamber is the root or pulp canal. A tooth may have one root and many premolar and molar teeth may contain two or three roots. It houses cellular material including pulp and the tooth's roots. This area of the tooth is extremely sensitive and is responsible for providing the blood flow and nutrients that are necessary to keep teeth alive. When this area is damaged or infected by extensive decay and trauma, root canal treatment is often necessary to save a tooth from extraction.

Learning about the basics of tooth anatomy will help you understand how oral health conditions form so that you can teach your children healthy dental habits. Explaining the unique biological makeup of teeth to your kids can also be a fun and productive way to introduce biological concepts in an easy-to-understand format.

To read the entire article visit colgate.com

Josh McCormick, DDS   
4455 Cowell Road   
Concord, CA 94518   
(925) 685-3043   
MyEastBayDentist.com

Cavity Fillings: What to Expect, Types & Potential Problems

The process of filling cavities is a fairly simple and straightforward one that can be done right at your dentist's office.

Filling Cavities: What to Expect

You should expect to be at your dentist's office for around an hour. This gives him or her enough time to take x-rays if needed, talk to you about the procedure and complete the dental work. Before filling cavities, your dentist will numb your teeth, gums and surrounding skin to avoid and lessen discomfort during the procedure. Next, he or she will drill out the decay in the tooth and replace it with a filling. This process only takes a few minutes.

Once you're done, your mouth will probably remain numb for a few more hours. There aren’t any significant risks associated with filling cavities, but be sure to keep your dentist’s contact information on hand in case you have any questions or complications.

The most common use of tooth fillings is to fill a cavity in the tooth. But tooth fillings also can be used to repair damage to teeth caused by teeth grinding (bruxism) or to replace part of a broken tooth.

Types of Cavity Fillings

Many options are available for tooth fillings, and all of them have their pros and cons. Types of tooth fillings include gold, silver amalgam (a composite of mercury, silver, and other metals), tooth-colored composite material, porcelain, and a special type of glass. The best tooth fillings for you will depend on cost, what your insurance may cover, and your aesthetic preferences.

There is a wide variety of materials used for filling cavities and they vary in strength and color. The two most common types are amalgam and composite.

• Amalgam Fillings: Amalgam has been used by dental professionals for more than a century; it is the most researched material used for filling cavities. Amalgam fillings are strong and are therefore ideal for filling cavities in the back of the mouth such as in the molars, where chewing takes place. Since they are made of a combination of several metallic elements, amalgam fillings can be noticeable when you laugh or smile. These fillings are among the least expensive of all cavity-filling materials.
• Composite Fillings: Sometimes referred to as composites or filled resins, these fillings feature a combination of glass or quartz filler and can be made to match the color of your tooth. Composite fillings are also fairly durable and are ideal for small-to-mid-size restorations in areas of your mouth that perform moderate chewing.
• Metals: Gold or silver amalgam are the most common metals used for a cavity filling. Gold fillings can cost as much as 10 times more than silver amalgam fillings, but some people prefer the appearance of gold to silver fillings if they want the durability of metal vs. a less-durable composite material. Some people don’t like the appearance of metal fillings, but metal fillings can last as long as 10-15 years before they need to be replaced.
• Ceramic: A ceramic cavity filling (usually made of porcelain) is tooth-colored, and it may be less likely to show tooth stains over time than a composite cavity filling. But price is a factor—a ceramic filling can be nearly as expensive as a gold cavity filling.
• Glass Ionomer: This blend of acrylic and glass is used to create a cavity filling that releases fluoride to help protect teeth. But a glass ionomer cavity filling is less durable than other types, and may need to be replaced in as little as five years.

Taking Care of Cavity Fillings

You may experience some sensitivity and pain after receiving tooth fillings, but this discomfort should subside. Don't neglect your oral care routine. Instead, try products designed specifically to protect sensitive teeth. Crest Pro-Health Sensitive Plus Enamel Shield Toothpaste protects sensitive teeth, and also provides protection against future tooth decay. In addition, Oral-B Glide Floss for sensitive gums shouldn’t irritate the area around tooth fillings.

When to Replace a Cavity Filling

Tooth fillings usually last for many years before they need to be replaced. But tooth fillings can wear out over years of chewing. If you clench or grind your teeth, you may need to have tooth fillings replaced sooner.

If you notice signs of wear on your tooth fillings, such as cracks or worn areas, see your dentist to have the filling replaced as soon as possible. Continuing to chew with a damaged filling can cause the tooth to crack and require additional repair that is more expensive and more complicated than a simple cavity filling. If additional tooth decay develops around a filling, whether or not the filling is damaged, your dentist may choose to repair the tooth with a crown instead of a second cavity filling.

Other Potential Problems with Cavity Fillings

It’s important to know about potential problems, so you can see your dentist promptly to have cavity fillings adjusted or repaired. Possible complications from cavity fillings include: 

• Infection: Sometimes a cavity filling will pull away from the tooth to which it is attached, creating a small space. This space can be a breeding ground for bacteria that can cause additional tooth decay. If you notice a space between your tooth and your cavity filling, visit a dentist as soon as possible.
• Damage: Sometimes a cavity filling breaks, cracks, or falls out. Damage to a filling can occur when you bite down on something hard or if you are hit in the mouth while playing sports. See a dentist as soon as you notice damage to a cavity filling to avoid irritation and infection of the unprotected tooth.

To read the entire article visit crest.com

Josh McCormick, DDS   
4455 Cowell Road   
Concord, CA 94518   
(925) 685-3043   
MyEastBayDentist.com

Erosion: Stomach Upset and Your Teeth

Did you know your digestive health can affect your teeth?

Frequent stomach upset can cause a gradual wearing away of the protective enamel on your teeth, a process known as tooth erosion. This can affect the appearance of your teeth and open the door for harmful bacteria that cause cavities.

How Do Stomach Problems Affect My Teeth?

Your stomach produces natural acids that help your body digest food. Sometimes, these acids travel up the throat and into the mouth, especially after a large meal. Ordinarily, our saliva rebalances the acid levels in our mouth and everything’s fine. 

But for those who suffer from gastroesophageal reflux, also known as acid reflux or GERD, gastric acids reach the mouth throughout the day. This process is especially damaging when you’re asleep, since you are swallowing less often and your mouth is producing less saliva.

Another concern is the dry mouth caused by many acid reflux medicines. Saliva not only helps neutralize the acids caused by acid reflux, but also helps to wash away food particles and reduce bacteria that attack tooth enamel. This is why lower saliva production may increase your risk for cavities. 

What Does Reflux-Related Erosion Do to My Teeth?

Acid reflux can wear away the enamel on the inside surfaces of your teeth, as well as the chewing surfaces. Your dentist may notice this during an exam.

Unfortunately, tooth erosion is permanent. If your enamel has started to wear away, you may:

• Feel pain or sensitivity when consuming hot, cold or sweet drinks
• Notice a yellowish discoloration of the teeth
• Find that your fillings have changed
• Face greater risks for cavities over time
• Develop an abscess, in extreme cases
• Experience tooth loss, also in extreme cases

Once erosion occurs, you may need fillings, crowns, a root canal or even tooth removal. Veneers may be an option to restore the look of your smile. 

How to Protect Your Teeth – And Get Relief

• Chewing sugar-free gum can encourage saliva production, which helps neutralize and wash away the acids in your mouth. Look for one with the ADA Seal of Acceptance.
• Prescription or over-the-counter fluoride and desensitizing toothpastes may help strengthen tooth enamel. 
• Avoiding alcohol and smoking and refraining from eating 3 hours before bedtime may reduce the frequency of acid reflux episodes.
• If heartburn, acid reflux or other stomach problems are part of your daily life, work with your physician on a care plan to treat the underlying causes of your stomach troubles. 
• If you suffer from acid reflux, see your dentist regularly so they can make sure your teeth stay healthy, recommend ways to prevent tooth enamel erosion and suggest ways to get relief if you are also suffering from dry mouth.

To read the entire article visit mouthhealthy.org

Josh McCormick, DDS   
4455 Cowell Road   
Concord, CA 94518   
(925) 685-3043   
MyEastBayDentist.com