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.
We will begin our cost analysis with a simple and basic dental procedure-a Class I occlusal composite filling (code D2391). We will use an average national fee schedule for the fee-for-service cost, which is $110, and we will use the average of 11 PPO insurance plans for the comparison (Figure 2).Additionally, we will calculate the average cost to keep the dental office open per hour based upon a national average of rural and urban areas.e will use an average national fee schedule for the fee-for-service cost, which is $110, and we will use the average of 11 PPO insurance plans for the comparison (Figure 2). Additionally, we will calculate the average cost to keep the dental office open per hour based upon a national average of rural and urban areas.