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Pattinson 1/3

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Describe the characteristics and uses of the Pattison 1/2 curette and the Nevi H 5/9
The Pattison 1/2 curette is a debridement instrument used for the removal of calculus deposit from the crowns and roots of anterior teeth. It is a double-ended instruments with paired working-ends that are exact mirror images of each other. It has a large-diameter, lightweight and hollow handle which makes it easier to hold it and decreases muscle strain. Also, it has a knurling texture which allows maximize control of the instrument and reduce muscle fatigue. It has a single shank which makes it perfect to use on anterior teeth. It is semi-circular in cross section with the cutting edge on one side of the face. The working-end ends in a toe and it is …show more content…

They are used to remove calculus deposit from the crowns of the teeth. The scaler are triangular in cross section and the working end has a pointed back and pointed tip. It has two cutting edges one on each side of the face of the instrument. It is inserted at the midline of the tooth with the tip-third against the tooth and the side of the cutting edge facing the tooth in an angle. It is important to roll the instrument as soon as we insert the instrument, especially since the instrument is straight and do not follow the contour of the tooth surface. It is use with short vertical stroke and with lateral pressure against the tooth surface. The other side of the instrument has a round blade which make it possible to use in multiple direction. It is provide easy access for gingival cleft and furcation. It is great for occlusal calculus and anterior lingual stains and it protect tissue because it requires minimal tissue distention.

Nield-Gehrig, J. S. (2008a) Instrument design and classification (6th edition) Fundamentals of periodontal instrumentation and advanced root instrumentation (pp.151-162) New York, NY. Wolters Kluwer/ Lippincott Williams & Wilkins
Nield-Gehrig, J. S. (2008b) Adaptation and angulation (6th edition) Fundamentals of periodontal instrumentation and advanced root instrumentation (pp. 169-180) New York, NY. Wolters Kluwer/ Lippincott Williams & Wilkins

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