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.
The cost for amalgam fillings averages approximately $110 to $200 per filling. The cost for resin-based composite fillings, which is determined by the number of tooth surfaces on which the material is placed, ranges on average from $135 to $240 per filling.Next, go to: 1  Amalgam and composite tooth fillings.he cost of dental fillings depends on a variety of factors, including: 1  The dentist who performs the procedure. 2  The location where it is performed. 3  The type of dental insurance you have. 4  The number of tooth surfaces that need filling.