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periodontal scaler
Periodontal scalers are dental instruments used in the prophylactic and periodontal care of teeth (most often human teeth), including scaling and root planing. The working ends come in a variety of shapes and sizes, but they are always narrow at the tip, so as to allow for access to narrow embrasure spaces between teeth. They differ from periodontal curettes, which possess a blunt tip.
==Use==
Together with periodontal curettes, periodontal scalers are used to remove calculus from teeth. Scalers are used above the gum line, and curettes are used below it. Use of a scaler below the gum line is likely to damage the gingiva (gums).
Scalers are universal and have scraping edges on both sides of their blades, and are thus fit for both mesial and distal surfaces of any tooth in the area in which they are being used.
Scalers are best used when their terminal shanks, namely, the last portions of the handle attached to the blades, are held parallel to the long axis of the tooth. To facilitate proper usage, instruments often come with posterior analogs which possess angled terminal shanks.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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