Xerostomia: Dry Mouth Syndrome

Xerostomia (dry mouth) is not a condition everyone should expect. You may notice it as you age due to a change in hormones, medication, and/or radiation therapy in the head and neck region.

Why Xerostomia Is a Problem

Saliva is important to oral health for several reasons. The flow of saliva helps clear debris from the oral cavity. It provides minerals necessary to support the process of remineralization. Tooth enamel daily undergoes acid attack that removes inorganic minerals from teeth. This is called demineralization. Remineralization is the opposite of demineralization. It occurs when inorganic molecules flow into a region of weakened enamel and make it stronger.

When the salivary flow is reduced, a chain of events occurs. The natural cleansing action is diminished, as are the buffering action and remineralization properties of saliva. People with diminished salivary flow experience a very fast rate of decay, many times faster and over several teeth. This type of dental decay is typically noted along the gumline, around existing dental work, and on exposed root surfaces.

Prevention

You can help prevent dental decay that can result from xerostomia:

• Brushing and flossing correctly twice a day becomes very important.
• Frequent sips of water during the day can help moisten the mouth and can help clear debris.
• Daily use of a mouthrinse containing fluoride can help remineralize teeth.
• Use a toothpaste containing sodium fluoride.
• We recommend a daily brushing with a prescription, high-concentration sodium fluoride gel or paste. We will either dispense this or give you a prescription for it.
• Chew sugarless gum or a rubber band to stimulate salivary flow.
•  In moderate to severe cases, special fluoride delivery trays can be made for you to use at home. These will keep the high-concentration fluoride in a position to “soak” your teeth with fluoride for several minutes at a time.
• We recommend that you have your teeth cleaned, polished, and an office-applied topical fluoride treatment every 3 months while the condition persists.

Dry mouth can have serious dental consequences and must be treated accordingly.

If you have any questions about xerostomia, please feel free to contact us at any of our three office locations:

Hymeadow: (512) 250-5012

Jollyville: (512) 346-8424

West William Cannon: (512) 445-5721

Remineralization Device Could Soon Come to Market

A new device being developed by dental researchers at King's College London could soon bring to market an electronic tool that would encourage teeth to remineralize. 

Demineralization and remineralization have a crucial impact on the hardness and strength of tooth enamel.

What is demineralization?
Poor hygiene, bad brushing techniques, as well an inappropriate diet can lead to tooth decay due to changed acid levels in the oral cavity. Demineralization occurs at a low pH (acidic) when the oral environment is UNDERsaturated with mineral ions. Acids demineralize the tooth structure by dissolving calcium, phosphorus, etc. The enamel is dissolved by these organic acids (lactic and acetic acids) that are produced by the cellular action of plaque bacteria in the presence of dietary carbohydrates. This enamel erosion leads to dental cavities. 

Demineralized surfaces are porous and adherent, thus becoming favorable to bacteria growth that causes dental cavities and decay. In other words, enamel demineralization equals the beginning of cavity formation. Often, as a result of smoothness reduction, the tooth surface may suffer from superficial pigmentation, which can be visually unpleasant and impossible to remove with the toothbrush. 

Demineralized teeth are very sensitive to diverse stimuli: sensitive to hot and cold foods and drinks, as well as sensitive to the touch; brushing can be uncomfortable, even painful, and the patient can be tempted to skip brushing or cut it short, which is usually fatal for his or her teeth. When demineralized hypersensitive teeth are not properly cleaned, severe dental cavities affect the entire dental structure. Treatment becomes difficult. Patients need to understand that this condition appears as a result of an infection that can easily get out of control if hygiene is neglected.

What is remineralization?
Remineralization allows the loss of calcium, phosphate, and fluoride ions to be replaced. 

How do dentists fix cavities now?

With 2.3 billion affected annually, dental caries is one of the most common preventable diseases globally. Tooth decay normally develops in several stages, starting as a microscopic defect where minerals leach out of tooth. Dentists normally treat established caries in a tooth by drilling to remove the decay and filling the tooth with a material such as amalgam or composite resin. 

What can this tool do?
Reminova Ltd, a company that emerged from King's College London Dental Innovation and Translation Centre, takes a different approach - one that rebuilds the tooth and heals it without the need for drills, needles, or amalgam. By accelerating the natural process by which calcium and phosphate minerals re-enter the tooth to repair a defect, the device boosts the tooth's natural repair process.

How would the tool work?

Electric currents already used to check pulp/nerve of a tooth

The two-step method developed by Reminova first prepares the damaged part of the enamel outer layer of the tooth and then uses a tiny electric current to "push" minerals into the tooth to repair the damaged site. The defect is remineralized in a painless process that requires no drills, no injections, and no filling materials. Electric currents are already used by dentists to check the pulp or nerve of a tooth; the new device uses a far smaller current than that currently used on patients and cannot be felt by the patient. The technique, known as Electrically Accelerated and Enhanced Remineralization (EAER), could be brought to market within 3 years.

What is the company?
Reminova Ltd will be based in Perth, Scotland, to benefit from the strong life sciences and dentistry base. It will commercialize the work of Professor Nigel Pitts and Dr. Chris Longbottom, based in the Dental Institute at King's College London. With a combined 80 years' experience in dentistry, they have previously brought dental devices to market to detect tooth decay. The company, formed in collaboration with Innova Partnerships, is currently seeking private investment to develop their remineralization device. 

Who are the designers?
Kit Malthouse, chair of MedCity and London's deputy mayor for business and enterprise, commented, "It's brilliant to see the really creative research taking place at King's making its way out of the lab so quickly and being turned into a new device that has the potential to make a real difference to the dental health and patient experience of people with tooth decay."

Sources:
https://wwww.dentalaegis.com/news.php?id=15411
http://www.dentfix.ro/en/2011/10/demineralization/ 
http://www.dentistryiq.com/articles/wdj/print/volume-4/issue-9/focus-on-orthodontics/demineralization-and-remineralization-the-battle-to-keep-teeth-strong-and-healthy.html