2/27/2023 0 Comments K3 note md1 db file![]() ![]() ![]() The K3 features a slightly positive rake angle for optimum cutting efficiently. ![]() The ideal rake angle is slightly positive, because an overly positive rake angle will result in digging and plowing of the dentin. As dentin is dense and somewhat resilient, cutting or chip dislodgment with negative rake angles is difficult and very inefficient.Īs previously noted, negative rake angles are inefficient and result in dentin scraping rather than cutting and chip dislodgment. The Profile and most other conventional instruments utilize negative rake angles, which result in a scraping rather than a cutting action. It can also be measured relative the circumference as indicated by the green lines on the examples below. Rake angles are determined by drawing a centerline parallel to the center of the file and determining the angle relative to the centerline. Positive Rake Angle An instrument's cutting efficiency is dependant upon the overall rake angle of the instrument's cutting blades. ![]()
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