Komet USA released a new kit designed for the trimming and shaping of bis-acryl provisional material according to a technique developed by Thomas R. McDonald, D.M.D., of Athens, GA. The Thomas R. McDonald, D.M.D., Provisional System Kit LD0321 contains four tungsten carbide burs and one honeycomb spiral reinforced diamond disk.
Designed in conjunction with Dr. McDonald, the kit is for single- or multitooth contouring. The shape and fluting designs of the burs were selected for their precision and efficiency, according to Komet.
The H79GE.HP.070 is a large-coarse cutter designed for working with acrylics and plaster. For single-tooth restorations, with this one bur the operator can trim the entire margin, the company noted. The H1.HP.023 round bur is used to accentuate occlusal anatomy and relieve internal surfaces.
With these instruments, Dr. McDonald's stepwise technique can allow clinicians to trim a single-tooth restoration in less than one minute, according to Komet. The H251ACR.HP.060 instrument's toothing is an intermediate version between the supercoarse and coarse-staggered toothing. This bur allows for precise margin shaping, pontic contouring, and proximal embrasure development in multiple-unit restorations, the company said.
The H79EF.HP.040 bur (fine Komet S-Cutter) is designed for incisal edge definition and facial anatomical contouring. Finally, the 6924.HP.180 honeycomb diamond disk is intended for trimming of the proximal embrasures and margins in the aesthetic zone. It has a longer service life because of its flexibility and diamond coating design, Komet said.
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