3/4 Buck Periodontal Knife

3/4 Buck Periodontal Knife

The 3/4 Buck Periodontal Knife is a double-ended periodontal instrument constructed from surgical-grade 440A stainless steel, delivering strong corrosion resistance and reliable edge retention across repeated sterilization cycles. Each end carries a thin, angulated blade with a sharp cutting edge measuring 3/4mm at the tip. The blade geometry sits offset from the handle axis, allowing access into gingival pockets without the handle obstructing the operative field. As seen in the instrument profile, the handle features a knurled, round-barrel body with a green surface coating for glare reduction under surgical lighting. The overall build is double-ended and fully symmetric, supporting ambidextrous use.

The instrument is fully autoclavable with no composite or bonded components that could degrade under heat sterilization. The Periodontal Knife Buck 3/4 belongs to the gingivectomy knife family — distinct from interdental knives like the Orban series — as its blade targets facial and lingual gingival surfaces rather than interproximal columns. The thin blade profile reduces drag through soft tissue, giving the surgeon direct tactile feedback during incision strokes. The knurled handle resists slipping even in a wet operative field.

Periodontists use the 3/4 Buck Periodontal Knife during gingivectomy and gingivoplasty procedures to place external bevel incisions through the keratinized gingiva at a 45-degree angle to the tooth surface. The surgeon inserts the blade coronal to the base of the pocket, directing the stroke toward the alveolar crest to excise the diseased gingival wall. It also removes and recontours excess soft tissue on both facial and lingual aspects during gingival resection cases.

The Periodontal Orban Knives 3/4 Buck variant rounds out an essential surgical tray for soft tissue management. Leader Surgical delivers this instrument with consistent dimensional tolerances, verified stainless steel composition, and a sterilization-safe finish — making it a dependable choice for periodontists managing active gingival disease.

What angle should be used during procedures?
According to Crosstex Dental, the blade should be placed against the tooth at a 45-degree angle when used in the gingival sulcus to effectively remove plaque and tartar without damaging the gum tissue.