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.
Check-Ups. Common check-up and cleaning costs vary. Dentists charge different rates depending upon your situation and where you live. In most places, an average check-up costs about $288, which covers an exam, x-rays and cleaning.Non-surgicalâ extractions and âsurgicalâ extractions are needed when a tooth canât be repaired. Treatment costs depend on the visitâs length and difficulty. In general, both non-surgical and surgical extractions need anesthesia. Average tooth removals cost: 1  $75 to $300 for non-surgical, gum-erupted tooth extraction.