Periodontal Desmotome Straight Knife

The Periodontal Desmotome Straight Knife is a single-ended surgical instrument constructed from surgical-grade stainless steel, featuring a thin, straight blade tip that runs in line with the handle’s long axis without angular deviation. The cutting edge sits at the terminal tip only, with dull lateral sides that prevent unintended tissue laceration during apical advancement through the sulcus. The blade is narrow enough to enter the periodontal ligament space between root surface and crestal bone without contacting adjacent teeth or expanding the socket walls. The elongated, tapered handle — clearly visible in the instrument profile — supports a pen-style grip that delivers controlled downward pressure along the root’s long axis.

The Straight Desmotome Knife is anatomically matched to upper anterior teeth, where the straight root axis allows a direct, vertical blade approach from the sulcus to the alveolar crest. In contrast to the PDL Knife Anterior curved variants, the straight design maintains blade-to-root contact throughout the apical stroke without handle obstruction in the anterior region. The instrument is fully autoclavable and maintains blade sharpness through repeated sterilization cycles.

Oral surgeons use the Periodontal Desmotome Straight Knife during atraumatic extraction procedures on maxillary anterior teeth. The clinician inserts the blade vertically into the sulcus, advances it apically along the root surface to sever the Sharpey’s fibers and PDL attachments circumferentially, then repeats around the full root perimeter. This severs all ligament connections without lateral bone expansion, preserving the buccal plate for subsequent immediate implant placement.

The Atraumatic Extraction Instrument straight pattern is a foundational step in modern socket preservation protocols. Leader Surgical delivers this knife to consistent blade dimensions, verified stainless steel composition, and sterilization-safe finishing.

What is the periotome instrument used for?
The Periotome is a reusable blade-shaped instrument to be used to facilitate removal of teeth with minimal damage to the surrounding alveolar bone. The Periotome is available in three different blade configurations, depending on the shape of the tooth (P1 to P3). The blades are to be connected to a handle.