Salary Outlook. Hygienists make comfortable salaries, especially considering that more than half of them work part time. In 2013, their median salary was $71,110. The best-paid earned about $96,690, and the bottom 10 percent earned $47,880.Many of the top-paid hygienists work in dental offices, but ambulatory health care services also pay well.n 2013, their median salary was $71,110. The best-paid earned about $96,690, and the bottom 10 percent earned $47,880. Many of the top-paid hygienists work in dental offices, but ambulatory health care services also pay well.
Historical Cost. Definition. Historical Cost is the original cost incurred in the past to acquire an asset. Historical Cost Convention requires assets to be recognized at their historical cost. Explanation. Assets need to be assigned some value in the accounting books.
Disadvantages. 1  Historical cost accounts give no indication of current values of the assets of a business. 2  Historical cost accounts do not record the opportunity costs of the use of older assets, particularly property which may be recorded at a value based on costs incurred many years ago.