today EAO Madrid October 05, 2017

Nano-coating effective in reducing peri-implantitis risk Combination of silver, titanium dioxide and hydroxyapatite shows promising results in UK study implant news (cid:132) Investigating the effect of a new approach using a combination of sil- ver, titanium dioxide and hydro xy- apatite (HA) nano-coatings on the surface of titanium alloy implants, researchers from Plymouth in the UK have found that the method was successful in inhibiting bacterial growth and reducing the formation of bacterial biofi lm. In addition, the coating created a surface with anti- biofi lm properties, thus supporting successful integration of the im- plants into surrounding bone and accelerating bone healing. One of the main reasons for den- tal implant failure is peri-implanti- tis, an infl ammatory process affect- ing the soft and hard tissue sur- rounding dental implants caused by pathogenic microbes that develop into biofi lms. Current approaches to managing the development of bio- fi lms include application of antimi- crobial coatings loaded with antibi- otics or chlorhexidine. However, these are usually only short-term measures. In addition, chlorhex- idine has been reported to be poten- tially toxic to human cells. Investigating a new approach to the prevention of biofi lm, research- ited bacterial growth and reduced the formation of bacterial biofi lm on the surface of the implants by 97.5 per cent. Uncoated controls and titanium nano-coatings showed no antibacterial effect. dioxide According to the researchers, no dissolution was detected for the HA nano-coatings. Thus, application of a dual-layered silver–HA nano-coat- ing on titanium alloy implants fur- ther created a surface with anti- biofi lm properties without compro- mising the HA biocompatibility re- quired for successful osseointegra- tion and accelerated bone healing. “In this cross-faculty study we have identifi ed the means to protect dental implants against the most common cause of their failure. The potential of our work for increased patient comfort and satisfaction, and reduced costs, is great and we look forward to translating our fi nd- ings into clinical practice,” com- mented Prof. Christopher Tredwin, Head of the Peninsula School of Dentistry. In the next step, the effective- ness of the approach needs to be tested in vivo, according to the re- searchers. (cid:26) © Stas Walenga/Shutterstock.com ers from the School of Biological Sciences, Peninsula Schools of Medi- cine and Dentistry, and School of En- gineering at the University of Plym- outh tested the effectiveness of a dual-layered silver–HA nano-coating on titanium alloy medical implants. The antibacterial performance of the coating was quantitatively assessed by measuring the growth of Strepto- coccus sanguinis, the proportion of live and dead cells, and lactate production by the microbes over 24 hours. The results showed that the combination successfully inhib- Global dental implant market to rise in value Spanish study fi nds strong link between OSA and implant complications (cid:132) A recent report on the global den- tal implant market has forecast a compound annual growth rate of 7.9 per cent for the industry until 2024. The report was compiled by Transparency Market Research and predicts that this market will be worth US$8.18 billion by the end of the analysis period. This expected continued growth can be attributed to a number of fac- tors. With ageing populations world- wide, more people than ever before are being treated for dental prob- lems. Furthermore, advancements in CAD/CAM technology and increas- ing recognition of the importance of maintaining good oral hygiene are contributors, the report stated. Titanium implants and zirconia implants were identifi ed as two key segments of this market, with the for- mer expected to be both the leading revenue generator and the fast- est-growing segment. Titanium alloys used in dentistry are lightweight, re- sistant to corrosion and wear, and able to withstand high temperatures. Zirconia implants offer a metal-free alternative and provide excellent osseointegration and aesthetic pro p- erties. According to the report, Europe was leading the global dental im- plant market by overall demand at the start of the forecast period, closely followed by North America. The Asia-Pacifi c region is the fastest growing market, however, as demand for medical facilities continues to in- crease there. (Products—Endosteal The report, titled Dental Implants Market Im- plants, Subperiosteal Implants, Tran- sosteal Implants, and Intramucosal Implants; Materials—Titanium Im- plants and Zirconium Implants; End Users—Hospitals, Dental Clinics, and Academic and Research Institutes)— Global Industry Analysis, Size, Share, Growth, Trends, and Forecast 2016– 2024, can be purchased from the Transparency Market Research web- site. (cid:26) © Vlad Kochelaevskiy/Shutterstock.com 6 26th EAO Annual Scientifi c Meeting © The_Pixel/Shutterstock.com (cid:132) There has been increasing aware- ness of the reciprocal relationship between obstructive sleep apnoea (OSA) and dental problems, for exam- ple sleep bruxism and a higher sleep disorder and implant complica- tions. Aiming to analyse the frequency of prosthetic complications in im- plant-borne prostheses, a group of re- ments. Moreover, the highest ap- noea–hypopnea index score, and thus the severity of OSA, was identi- fi ed in patients with a fracture com- plication related to an implant, a © tommaso79/Shutterstock.com clench index. However, few studies have investigated the role of OSA in the occurrence of technical failure in fi xed prostheses, especially those that are implant-borne. Spanish re- search conducted by dentists in col- laboration with the OSI Araba Uni- versity Hospital in Vitoria has now found that over 80 per cent of the patients with OSA experienced im- plant problems—suggesting a poten- tially strong correlation between the Complications searchers from Vitoria investigated implant failure in 67 patients. They identifi ed 30 complications affecting 22 prostheses among 16 patients. Of these, 13 also had OSA (81 per cent). included porce- lain fracture (14 events), screw/im- plant fracture (eight events), screw loosening (three events) and de-ce- mentation (fi ve events). According to the researchers, most of the complica- tions occurred in the posterior seg- screw or a porcelain crown, the study showed. The average time for prob- lem occurrence was 73 months after insertion of the implant. Based on the results, which sug- gest a strong link between OSA and implant complications, the research- ers noted that future studies should explore the correlation further in or- der to better understand the risk fac- tors and frequencies of these occur- rences. (cid:26)

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