Nobel Biocare Letter - (Page 6) RePlant’s thread design eliminates the shoulder at the transition from the threads to the collar of the Replace implant by extending the threads to within 1mm of the top. 3.5mm Diameter 4.3mm Diameter 5.0mm Diameter 6.0mm Diameter Implant Direct does not claim that its RePlant implant is exactly the same in “physical outline” or “thread pitch” as Nobel points out. In fact, the design differences, including its double-lead threads for faster insertion, quadruple-lead mini-threads for reduced stress distribution and its long self-tapping, vertical grooves are significant improvements to the NobleReplace Tapered Implant design. These features have been added while matching exactly the Replace’s platform and thread diameters as well as the degree and location of its tapered apical end for each length and diameter of implant. This is what allows RePlant to be inserted using NobelReplace’s length specific drills. The RePlant maintains the same “V” threads of the Branemark and Screw-Vent implants, with double lead threads on the body for 2X faster insertion. This is in contrast to the flat-topped threads of the Replace, found in orthopedic fixation screws to resist pull-out forces which are not a factor with dental implants. The Mini-threads of the RePlant are an improvement compared to the few horizontal grooves in the collar region of the Replace implant. They engage bone during selftapping insertion, increasing initial stability and improving stress distribution in immediate load applications, whereas the Replace grooves require bone ingrowth to have any effect. Nobel’s arguments against RePlant’s surgical compatibility with Replace drills, is based on two elements. 1. Location of a “Shoulder” (Slide #3) or “Collar” (Slide #4): NobelReplace drills create a countersink at a specific depth to accommodate the collar or shoulder of its Replace implant. Since RePlant has no collar /shoulder this is irrelevant. 2. Difference in thread design: NobelReplace implants have a different thread pattern than the RePlant and bone taps are part of the hard bone protocol for the 8mm and 10mm implants. Since RePlant is self-tapping, this is irrelevant. Nobel Biocare Slide 6 & 7: Nobel Claims the RePlant “Shoulder” and cross-threading will interfere with Seating RePlant vs. NobelReplaceTM Thread Pitch Are the Nobel drilling/tapping systems compatible with RePlant? With a both a different physical outline of the implants, and a different thread pitch, perhaps theanswer is rather self evident RePlant vs. NobelReplaceTM Thread Pitch Image Source www.implantdirect.com/newsletter_0 /newsletter/newsletter6.htm Thread Patterns do not match implants will cross thread 6 www.implantdirect.com/newsletter_0
Table of Contents Feed for the Digital Edition of Nobel Biocare Letter Nobel Biocare Letter Nobel Biocare Letter - (Page 1) Nobel Biocare Letter - (Page 2) Nobel Biocare Letter - (Page 3) Nobel Biocare Letter - (Page 4) Nobel Biocare Letter - (Page 5) Nobel Biocare Letter - (Page 6) Nobel Biocare Letter - (Page 7) Nobel Biocare Letter - (Page 8) Nobel Biocare Letter - (Page 9) Nobel Biocare Letter - (Page 10) Nobel Biocare Letter - (Page 11) Nobel Biocare Letter - (Page 12)
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