The gingival sulcus is an area of potential space between a tooth and the surrounding gingival tissue and is lined by sulcular epithelium. The depth of the sulcus (Latin for groove) is bounded by two entities: apically by the gingival fibers of the connective tissue attachment and coronally by the free gingival margin.
The term gross refers to the total amount made as a result of some activity. It can refer to things such as total profit or total sales. Net (or Nett) refers to the amount left over after all deductions are made. Once the net value is attained, nothing further is subtracted.
Gross profit is the total sales profit without including overhead costs or, operating expenses, like rent, utilities, payroll and taxes. His operating expenses are $2,000 a month. The net income is calculated by deducting the cost of goods and services and the operational costs from the revenue.