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ePaper created 2015-08-26, 12:18:59 | version 1.38.0
By W&H Staff n Surgical drive instruments face anatomical limits when extracting wisdom teeth: The cheek obstructs straight handpieces in the case of small mouths, or the distal molar makesburraccessdifficultforcontra- angle handpieces. Ineithercase,thenewsurgicalcon- tra-angle handpieces from W&H offer a solution — even for wide apical tooth sectioning. Dental handpieces WS-91 and WS-91LG combine the advan- tages of surgical straight and contra- angle handpieces for the first time ever. The extended angle between the shank and burr axis allows good access to the tooth row both buccally andocclusally.Displacedteethcanbe comfortably sectioned. The dentist also has a signifi- cantly better view of the surgical site thanwiththeinstrumentspreviously available. Dr. Mario Kirste from Frankfurt/ Oder had this to say: “If I turn the contra-angle handpiece head slightly, I can work particularly quickly and safely in the retromolar region. The instrument has the potential to rec- oncilethecontrastingpositionstaken up by the users of straight and contra- angle handpieces.” Power plus hygienic safety The new contra-angle handpieces WS-91/WS-91LGarerealpowerhouses at the same time, W&H asserts. Their transmission ratio of 1:2.7 results in a speed of up to 135,000 revolutions per minute. The key factor, however, is their high power combined with a surgical motor. The contra-angle handpieces achieve an effective power of more than 2 Ncm on the working part of the burrs, making them almost three times as powerful as standard dental contra-angle handpieces combined with an electric dental motor. Biologically necessary and hygi- enically safe cooling is also taken care of: An external triple spray cools the rotating instrument with a sterile saline solution. As with all dental handpieces from W&H, the surface of the new contra-angle handpieces is scratch-resistant and easy to clean, according to W&H. The handpieces can be disassembled without tools. Successful balance Apical resection is another indica- tion for the contra-angle handpieces WS-91/WS-91LG. The sophisticated geometry ensures excellent vision in cases involving maxillary molars and small mouths, according to W&H. In the WS-91LG, a mini LED+ also illuminates the operating area with daylight quality. “The new contra-angle handpieces are a really successful balance. This achievement by W&H extends my viewing angle and my options in rou- tine surgery,” Kirste said. exhibitors20 Chicago Midwinter Meeting — February 26, 2015 For tight situations when extracting wisdom teeth, extend your surgical viewing angle Here in Chicago Check out the W&H handpieces WS-91 and WS-91LG at the booth, No. 4801. 5 The new surgical contra-angle handpiece WS-91LG. (Photos/ Provided by W&H) 5 Application of the WS-91LG by W&H. 5 An X-ray visual. 5 A visual comparison. 5 The contra angle with 45-degree head.