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ePaper created 2015-03-23, 09:31:36 | version 1.33.01
industry Implant Tribune U.S. Edition | February 2015C6 For tight situations when extracting wisdom teeth, here’s how to extend your surgical viewing angle By W&H Staff S urgical drive instruments face anatomical limits when extracting wisdom teeth: The cheek obstructs straight handpieces in the case of small mouths, or the distal molar makes burr access difficult for contra-angle hand- pieces. In either case, the new surgical contra- angle handpieces from W&H offer a solu- tion — even for wide apical tooth section- ing. Dental handpieces WS-91 and WS-91LG combinetheadvantagesofsurgicalstraight 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 and occlusally. Displaced teeth can be comfortably sec- tioned. The dentist also has a significantly better view of the surgical site than with the in- struments previously available. Dr. Mario Kirste from Frankfurt/Oder had this to say: “If I turn the contra-angle handpiece head slightly, I can work particu- larly quickly and safely in the retromolar region. The instrument has the potential to reconcile the contrasting positions taken up by the users of straight and contra-angle handpieces.” Power plus hygienic safety The new contra-angle handpieces WS-91/ WS-91LG are real powerhouses at the same time, W&H asserts. Their transmission ra- tio 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 al- most three times as powerful as standard dental contra-angle handpieces combined with an electric dental motor. Biologically necessary and hygienically safe cooling is also taken care of: An exter- nal triple spray cools the rotating instru- mentwithasterilesalinesolution. Aswithalldentalhandpiecesfrom W&H, the surface of the new con- tra-angle handpieces is scratch-re- sistantandthereforeeasytoclean, according to W&H. They can also be easily disassembled without tools. Successful balance Apical resection is another indication for the contra-angle handpieces WS-91/WS- 91LG. The sophisticated geometry ensures excellent vision in cases involving maxil- lary molars and small mouths, according to W&H. In the WS-91LG, a mini LED+ also il- luminates 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 routine surgery,” Kirste said. The new surgical contra-angle handpiece WS-91LG. (Photos/Provided by W&H) AO BOOTH NO. 133 At left, application of the WS-91LG by W&H. Below, a visual comparison and the W&H surgical contra angle handpiece. At left, X-ray visual. Below, the contra angle with 45-degree head and the W&H surgical handpiece.