supragingival instrumentation

su·pra·gin·gi·val in·stru·men·ta·tion

(sūpră-jinji-văl instrŭ-mĕn-tāshŭn)
Use of a dental instrument apical to (below) the gingival margin.
References in periodicals archive ?
Supragingival instrumentation is intended to polish the tooth's surfaces as well as the dental materials located outside the gingival margin.