The elevator is used to apply a dislocation force to the tooth particle that promotes severing of the periodontal tissue that connects the tooth particle to the surrounding alveolar bone along the superficial portion of the tooth root.
dislocated. A Periodontal Knife is a sharp instrument with less blade dents than an elevator (Fig. 13.11B–C). It is used to cut or sever the Sharpie fibers in the periodontal tissue and loosen the tooth prior to extraction.
Once the tooth is extracted, a #8 or #10 long shaft surgical round bur removes the periodontal ligament and possibly up to 1 mm of cancellous bone in the socket.
Periodontal Knife is used for chamfering incisions, contouring the gingiva, and resecting interdental tissue. periodontal knives are hand finished to have smooth, sharp edges for improved accuracy and efficiency.
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