Xylitol reduces risk of cavities

Xylitol is a sugar alcohol that is produced by reduction of the sugar xylose, or wood sugar. Xylitol occurs naturally in fruits and berries, such as pears and strawberries. It is used in sugarless sweets, above all in chewing gum and lozenges. The dissertation studies what effects the substance has on the ecology of the oral cavity and its role in preventing tooth decay (caries).

In a series of studies on children and adolescents, samples of saliva and plaque were examined. Among other findings, it was determined that a daily intake of 3.4 grams of xylitol was sufficient to change the consistency of the bacteria, but this did not lead to a lower production of lactic acid in plaque. In another study it was shown that a single higher intake of xylitol for a limited time reduced the degree of acidity in plaque between teeth.

In a field study involving 128 children aged 7-12, the subjects were asked to chew gum three times a day, with a total daily dose of 6.0 grams of xylitol. The amount of plaque and the production of lactic acid declined dramatically during the trial period. After four weeks, the proportion of caries-producing bacteria was down by a third, but six months afterward the values had returned to the original levels. Despite the relatively high dose of xylitol used, no negative effects were reported, such as stomach troubles.

Products with xylitol as the sole sweetener are uncommon on the Swedish market today. In the most common sugarless products, xylitol accounts for roughly a third of the sweetening.

The studies nevertheless warrant the following recommendations:

o A daily intake of xylitol is recommended as a supplement for patients at high risk for tooth decay.

o Xylitol products that actively stimulate the secretion of saliva should be the first choice, such as chewing gum.

o About 6 g of xylitol per day is needed to counteract the production of acid and thereby reduce the risk of cavities.

o The daily intake should be distributed over at least three occasions.

o The products should contain as much xylitol as possible and not be mixed with other sweeteners.

Pernilla Lif Holgerson is a dentist and doctoral candidate at the Department of Odontology, Division of Pedodontics, phone: +46 (0)90-785 62 48; cell phone: +46 (0)70-224 34 61; e-mail: pernilla.lif@odont.umu.se

The dissertation will be submitted on Friday, February 23, at the Department of Odontology, Umeå University. It is titled: Xylitol and its Effect on Oral Ecology¬-Clinical Studies in Children and Adolescents.

The external examiner is Associate Professor Eva Söderling, Institute of Dentistry, Åbo University, Åbo, Finland.

Media Contact

Hans Fällman idw

More Information:

http://www.vr.se

All latest news from the category: Health and Medicine

This subject area encompasses research and studies in the field of human medicine.

Among the wide-ranging list of topics covered here are anesthesiology, anatomy, surgery, human genetics, hygiene and environmental medicine, internal medicine, neurology, pharmacology, physiology, urology and dental medicine.

Back to home

Comments (0)

Write a comment

Newest articles

Novel catalyst for charge separation in photocatalytic water splitting

A research team led by Prof. JIANG Hailong, Prof. LUO Yi, and Prof. JIANG Jun from the University of Science and Technology of China (USTC) discovered a metal-organic framework (MOF)…

Finding a missing piece for neurodegenerative disease research

Research led by the University of Michigan has provided compelling  evidence that could solve a fundamental mystery in the makeup of fibrils that play a role in Alzheimer’s, Parkinson’s and…

BESSY II: New procedure for better thermoplastics

Thermoplastic blends, produced by a new process, have better resilience. Now, experiments at the IRIS beamline show, why: nanocrystalline layers increase their performance. Bio-based thermoplastics are produced from renewable organic…