An addition to the highly successful OS System introduced in early 2009, KOMET’S IPR Starter Kit contains six hand-selected oscillating instruments for optimal interproximal enamel reduction (IPR). The kit includes two single-sided OS discs (OS20FH/OS20FV), two double-sided OS discs (OS35M/OS1M), and two new single-sided, exceptionally thin contact breakers (OS18MH/OS18MV) that are abrasive enough to cut through tight interproximal contacts.