Floyd - that sort of thing really interests me too.
Let me add that although we often submitted the teeth to the ministry, we rarely got the results back.
During my lifetime of dealing with bears (hunting, trapping, and guiding for them), the oldest looking bear I was ever involved with was a bow kill by one of my hunters in 1994 in northeastern Quebec.
When I skinned him I did an examination and the old boar was blind in one eye, had such a thick cataract on the other eye that he most likely could only see light through it (his survival to that point further proof of a bear's incredible sense of smell), he had only a few claws remaining, I could move the feet around in the paw like someone wearing oversized shoes, the skull was large (19" plus - I forget how much over 19" he was) but the head was very boney, he had to have weighed over 400 lbs in the fall at one time but he was only about 175 now.
We never saw him but when we went to the bait he was counting on, we could hear him moving off/around.
I really would have liked to know how old he was... that was definitely his last year to live.
I forgot to mention that I used to go to Sudbury in my youth. In fact we lived in Elliot Lake Ontario for a couple of years when I was a young boy - great bear and wolf country back then - they used to break into our ice box at night.