Launch This Resource. In 1950, Erwin Chargaff published a paper stating that in the DNA of any given species, the ratio of adenine to thymine is equal, as is the ratio of cytosine to guanine. This became known as Chargaff's ratio, and it was an important clue for solving the structure of DNA. Downloads. Downloads.
The average annual overhead for a dental office (not including the dentistâs salary) is $350,000. The average clinician works 33 hours per week for 48 weeks, which is 1,600 hours per year. By taking the $525,000 average annual revenue and dividing it by 1,600 hours, we get $312 an hour to keep the office operating profitably.
For example, dentists use X-ray machines and patient exam chairs with hundreds of patients each year. Most dental offices have more than one of each of these pieces of equipment. Depending on its design and purpose, a new exam chair can cost anywhere from $600 to $5000. New x-ray machines cost from $3000 to $65,000.Most companies that sell new dental equipment also offers refurbished equipment.A refurbished dental chair can cost you about half the price of a new one. Buy a used x-ray machine for as little as $2000. More technical used X-ray machines cost around $20,000.or example, dentists use X-ray machines and patient exam chairs with hundreds of patients each year. Most dental offices have more than one of each of these pieces of equipment. Depending on its design and purpose, a new exam chair can cost anywhere from $600 to $5000. New x-ray machines cost from $3000 to $65,000.