Yeah, it was on my mind for quite a while.
The old anecdotal story is that it takes 5+ years of training to develop the tendon strength to mono or dead hang a crimp without too much fear of your tendons snapping. After this time, you can sit on your butt twiddling your thumbs, but your tendons will still retain their tensile strength. So really, if you started climbing at an early age, your tendon and stabilizer strength should be phenomenal, and you'll be FAR less likely to hurt yourself. Some dentists I know have developed wrist pain, lower back pain, and foot pain. As a climber, these will be far less likely, because of a stronger core, lower leg and foot, and more stable forearms. It's really not all that bad. Overuse injuries can happen doing anything, but as a climber, you've probably learned how to read your body a bit better, and manage your injuries.
I made a brief list a while ago, bugged older friends to chime in, and it boiled down to this. My list of concerns was the following:
1) how long you have been climbing
2) whether or not you have sustained strains or damage to your pulleys or ligaments in the past
3) the type of climbing you prefer (dynamic vs static, overhanging bouldering vs. traversing, general bouldering vs trad, etc)
If you're a power and crimpy bouldering type, you'll have more concerns about wrecking you hands. However, as I've gotten older, I've become more static, technical, and less likely to run out the rope on a crux section. With maturity I've found it's a combination of knowing your body, training to compensate for weaknesses, and not being too unnecessarily dynamic - in general, taking better care of yourself.
Remember, there are more than a few dentists who climb frequently, and also a few who are Brazilian Jujitsu experts on the open circuit and compete - with all of the grappling, they still manage to stay healthy. It's all about training and knowing your body well enough to back off before the problem becomes too large to manage.
If you have any other specific questions, feel free to send me a Private Message.