lateral pressure

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lat·er·al pres·sure

(lat'ĕr-ăl presh'ŭr)
Applying equal (and minimal) pressure with the index finger and thumb inward against the instrument handle to press the working-end against a calculus deposit or tooth surface (or area of soft tissue) before and during an instrumentation stroke.
Medical Dictionary for the Dental Professions © Farlex 2012
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