What are Cavities?
Dental caries is the medical term for tooth decay or cavities. They are caused by acid erosion of tooth enamel. Detecting tooth decay in early stages is family dentistry main focus. Many different types of bacteria normally live in the human mouth. Bacteria accumulates (along with saliva, food particles and other natural substances) on the surface of the teeth in a sticky film called plaque. Plaque forms especially easily in cracks, pits or fissures in the back teeth; between teeth; around dental fillings or bridgework; and near the gum line. Some of the plaque bacteria convert sugar and carbohydrates (starches) in the foods we eat into acids. These acids dissolve minerals in the surface of the tooth, forming microscopic pits or erosions that get larger over time.
The damage can occur anywhere the tooth is exposed to plaque and acid, including the hard outer enamel on the tooth crown or the unprotected root of the tooth that has been exposed by gum recession. Caries can penetrate the protective enamel down to the softer, vulnerable dentin (main body of the tooth) and continue through to the soft tooth pulp and the sensitive nerve fibers within it.
No one really knows what causes the pain associated with cavities, but theories include inflammation caused by bacteria, exposure of the root surface and an imbalance of fluid levels in the tubules inside the dentin.
Symptoms of Dental Caries
Early caries may not have any symptoms. Later, when the decay has eaten through the enamel, the teeth may be sensitive to sweet foods or to hot and cold temperatures.
Dental Caries Diagnosis
Sunnyvale family dentist Dr. Gupta will look for caries at each office visit, regardless of whether it is a routine visit or an appointment made by the patient because of pain. Dr. Gupta will examine the teeth visually and will probe the teeth with an instrument called an explorer to determine if there are pits or areas of damage. Periodically, or if Dr. Gupta suspects hidden caries, X-rays will be taken.
How long caries lasts is determined by the stage at which they are found. White spots, indicating early caries that have not yet eroded through the enamel, may be reversed if acid damage is stopped and the tooth is given a chance to repair the damage naturally. Caries that has destroyed enamel cannot be reversed.
Most caries will continue to worsen and deepen and with time, the tooth may decay down to the root. The amount of time the erosion takes will vary from person to person. Caries can erode to a painful level within months or it can take years to reach that stage.
How to Prevent Dental Caries
At our family practice, Sunnyvale Dental Care, we believe that cavities can be prevented by reducing the amount of plaque and bacteria in the mouth. The best way to do this is by daily brushing and flossing, practicing healthy habits and seeing your family dentist twice a year for professional dental cleaning. You also can reduce the amount of acid in your mouth by eating sugary or starchy foods less frequently during the day.
Your mouth will remain acidic for several hours after eating, so snacking throughout the day is more likely to lead to caries than avoiding between-meal snacks. Sunnyvale family dentist Dr. Gupta recommends chewing gum that contains xylitol helps to counteract the acidity that occurs after eating.
Teeth can be strengthened by fluoride. At Sunnyvale Dental Care family clinic we can evaluate your risk of caries and then suggest appropriate fluoride treatments. In children, new molars can be protected by having Dr. Gupta apply a sealant as soon as the teeth come fully into the mouth.
Treatment for Dental Caries
The standard treatment for caries is to fill the tooth. After the dentist removes the decayed material in the cavity (usually following the use of anesthesia to block the pain), the cavity is filled. Fillings are usually made of a dental amalgam, which is a silver-gray material made from silver alloyed with copper or other metals in order to improve durability, or of a composite resin, which is tooth-colored for a better appearance.
Amalgams are used primarily in molars and premolars. Resins are used primarily in the front teeth, although it is possible to use them in all teeth. Gold inlay may be used if greater strength is needed, but this is more expensive.
If a cavity is large with extensive erosion, the remaining tooth may not be able to support the amount of filling material that would be needed to repair it. In this case, your family dentist will remove the decay, fill the cavity, and cover the tooth with an artificial crown.
Sometimes the crown of the tooth remains relatively intact, and there is more damage in the interior of the tooth. In these cases, your family dentist may refer you to a dental specialist called an endodontist for root canal treatment. In this procedure, the endodontist removes the tooth’s pulp and replaces it with an inert material. In most cases, the tooth’s natural crown will need to be replaced with an artificial crown.
When To Call A Professional
The early stages of decay are usually painless. Only regular professional examinations and X-rays can detect early trouble. If you develop sensitivity to chewing or to hot, cold or sweet foods or beverages, contact Sunnyvale Dental Care family dentistry center in Sunnyvale, CA today.
If a cavity goes undiagnosed, it likely will cause the tooth to erode significantly. Eventually, the tooth may be destroyed by uncontrolled decay.
Having caries increases your risk of more caries for several reasons:
- The same oral care and dietary habits that contributed to the plaque and
acids that caused the initial cavity may cause more decay
- Bacteria tend to adhere to fillings and other restorations more than tosmooth teeth, so t
hose areas will be more susceptible to new caries
- Cracks or gaps in the fillings may allow bacteria and food to enter the tooth,
leading to decay from beneath the filling.