3/7 Hirschfeld File Scaler, Buccal/Lingual, DE Hirschfeld File has multiple parallel straight cutting miniature hoe blades. The cutting edges are 99 to 105 angles to the base. The bases are varying in sizes, shapes (round, oval, rectangular, spade) and rounded backs. They are available in various shank lengths, angulation and sizes. Hirschfeld File Scalers are usually double-ended, paired instruments M/D (FH5/11), B/L (FH3/7). Product Details: 3/7 Hirschfeld File Scaler Buccal/Lingual Angled Used for interproximal bone reduction Double ended hand instrument Hollow handle design, 10mm dia Surgical stainless steel Completely sterilizable Purpose of Hirschfeld file Scaler: . Crushing, fracturing or roughening S/S Calc. . Gross S/S removal or burnished calculus . Deep, narrow pockets where length/curve of Curette blade will not fit . Palatals of maxillary anterior . M/D concavities of mandibular molars or cuspids . B/L of Molars of Bi’s . Smooth rough CEJ’s . Root planning using “finishing files” challenging in deep areas . Smoothing restoration margins or removing overhangs Contraindications: . Cannot be used tight tissue due to trauma to pocket (wide bulky base) . Adapt flat working surfaces to curved tooth surfaces . Straight, rigid terminal shank = limits in deep curved roots . Decreased tactile sensitivity because of bulk . Very easy to gouge tooth surfaces Application: . Modified pen grasp . Appropriate fulcrum . Full working surface adapted flat to tooth avoid trauma/gouging . Vertical coronal pull stroke . Follow up with curettes