Hand instruments should be used to remove large, bulky supragingival deposits before going on to powered scalers. Also, hand instruments are required to remove subgingival dental deposits (many mechanical scalers cause potential damage when used subgingivally).<br><br> | Hand instruments should be used to remove large, bulky supragingival deposits before going on to powered scalers. Also, hand instruments are required to remove subgingival dental deposits (many mechanical scalers cause potential damage when used subgingivally).<br><br> |