Hi Sandy.
First, can you explain to me how a dental report from March of 1958 can possibly list May 5th, 1958 as the date that a prosthesis failed? Am I missing something?
Bill,
Oswald apparently saw a new dentist on March 27, 1958. At that time the dentist performed an examination and reported his findings on a chart where he is instructed to show problems that needed fixing. Two cavities were found.
Oswald returned on April 30 and May 14 to have those cavities treated. The dentist reported those treatments on another chart located on the same form.
At some point in time Oswald reported to the dentist that the prosthesis had failed. The date the dentist wrote next to the failure notation was May 5. I don't know if that is the date of the failure, or if it is the date Oswald reported it, or both. But as you can see, the dentist was still adding information to the form up through May 14.
It appears to me that this same form would be marked up as long as Oswald was seeing that particular dentist. He wouldn't get a new form with each exam.