My observations on this posting. Unfortunately no teeth available for sectioning.
A buck with a grossly abnormal dental arrangement. In the photo of the buck in the skin he has only partially shed his winter coat which is late for the time he was culled.Also there is gross lack of body condition.
I have marked the lower jaw. Virtually no wear on P1,wear on P2,P3 abnormal,M1 wear excessive,M2 reasonably normal M3 probably normal for age.If you look carefully the crowns of the teeth above the gum line vary and are not consistent with normal wear.
Normal jaw. The area between the inner and outer cusps which show good dentine layers is the infundibulum.
Top jaw. Right side. Infundibulum showing as dark areas on M3, mesial of M2 and just visible through the enamel on M1.Very pale coloured dentine just visible on some surfaces older animal gets denser. Formed throughout the life of the animal until it obliterates the pulp.
Left side of top jaw. Premolars 3 and M1 partially erupted no M2 and M3.There are 2 dark areas on each of the teeth. One in the middle and the second on the lip side. This is the infundibulum being exposed at 2 positions due to abnormal wear.
First photo normal tooth demonstrating wear plains ( looking from the back of the animal )
Second photo upper normal tooth explaining the occurrence of double exposure of infundibulum
Going on the dentine exposure with so called ' white eye' on the Premolars and M1
4/5 yo
I leave you to age a normal jaw with your reasons and after some time will post the correct age