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By DTI IOWA CITY,USA: As xylitol has been shown to have decay-preventive qualities, especially for people at moderate to high risk of decay, or- thodontic patients are sometimes advised to chew xylitol-containing gumsormints.Arecentstudy,how- ever, has found that xylitol has no clinicalorbacterialbenefitinthese patients. The study sought to investigate the long-term effects of xylitol on plaque and saliva mutans streptococci, which play a major role in the development of dental caries. The participants were di- vided into three groups. Those in the first group consumed six pieces of xylitol chewing gum per day for three months after each meal, resulting in a total daily in- take of 6 g of xylitol. The second group ate 12 xylitol chewable mints per day for the same period, alsoresultinginatotaldailyintake of 6 g of xylitol. Participants in the third group served as controls and did not receive any xylitol application. Clinical examination at three, six and 12 months after baseline showed that all three groups had a reduction in plaque scores. How- ever, there was no significant dif- ference between the groups. Based on their findings, the researchers were unable to advocate its use as a caries prevention measure, since it did not provide any additional measurable benefit. They con- cluded that oral hygiene instruc- tionsandfluorideapplicationwere effective in study participants whether or not xylitol was con- sumed. The study, titled "Long- term clinical and bacterial effects of xylitol on patients with fixed orthodontic appliances," was pub- lished in the October issue of the Progress in Orthodontics journal. DENTALTRIBUNE The World’s Dental Newspaper · Nordic Edition Published in Scandinavia www.dental-tribune.com Vol. 1, No. 4 AGATEWAYTOSMOKING? A study from the University of Oulu has investigated how ado- lescents’ smokeless tobacco use is linked to cigarette smoking and alcohol consumption. ” Page 2 BIOMETRICTOOTH Materials researchers from ETH Zurich have created an artificial tooth that mimics the complex structure of natural teeth almost perfectly. ” Page 3 CASEREPORT Dr Irfêo Saraiva de Camargo on how to achieve natural aesthetics using modern crown and bridge materials for temporary restora- tions. ” Page 5 By DTI QUEBEC, Canada: Researchers at Université Laval in Quebec may have found a promising agent for new periodontal therapy. In a laboratory test series, they tested the effectiveness of Vaccinium angustifolium Ait., an extract from the wild lowbush blueberry, against Fusobacterium nuclea- tum, one of the main species of bacteria associated with perio- dontitis. Theyfoundthatthepolyphenol- rich extract successfully inhibited the growth of F. nucleatum, as well as its ability to form biofilms. This property may result from the abilityofblueberrypolyphenolsto chelate iron, the researchers said. In addition, the extract blocked a molecular pathway involved in inflammation. The researchers further stated that they are developing an oral devicethatcouldslowlyreleasethe extract after tooth scaling to help treat periodontitis. Natural antibiotic PRINT DIGITAL EDUCATION EVENTS The DTI publishing group is composed of the world’s leading dental trade publishers that reach more than 650,000 dentists in more than 90 countries. AD In the study,xylitol did not provide any additional measurable benefit as a caries prevention measure. By DTI BASEL, Switzerland: The European Society of Clinical Microbiology and Infectious Disease (ESCMID) has published the first clinical guidelines aimed at preventing build-upofdangerousbiofilm.The ESCMID’sStudyGroupforBiofilms (ESGB) further called for stronger collaborationbetweenanti-bacterial researchers and the pharmaceuti- cal and medical device industry in order to address increasing health risks posed by biofilms. “Biofilms are becoming an in- creasing problem both for medical device manufacturers and more crucially within clinical settings themselves. We are hoping that by publishing the guidelines and en- couraging collaboration between research groups across Europe, there will be earlier diagnosis and more efficient treatments of bio- films in the future,” ESGB Chair- person Prof. Thomas Bjarnsholt fromtheUniversityofCopenhagen said in a press announcement. The study group’s guidelines in- clude recommendations for the collection of samples and the use of themostreliabledetectionmethods for biofilms. The guidelines also include evaluation of antibody re- sponsestobiofilmsandguidanceon susceptibilitytestingofantibiotics. The guidelines were first pub- lished in the May issue of the ESCMID’s journal Clinical Microbiology and Infection. More information can be found at www.escmid.org. Preventingdangerousbiofilms Xylitol: No benefits with braces