This email came from Jim....
I thought your article was very informative. However, my 12 year old dog does have diabetes which is now under control. Previously, it wasn’t due to her thyroid. For the past 8 months she has been on Levothyroxine .2mg and she gets 9 units of Vetsulin twice a day after each meal. She is perky, energetic and runs down my apartment hall at full gallop to go outside. My vet thinks it’s too risky to have her go under anesthetic because of her condition, but I am leaning towards getting her teeth cleaned because I think the risk of dental disease might be far worse in the long run. I know your not my vet, but I would really appreciate your thoughts on my situation.
This is definitely a situation where I would rely more on your vet's opinion than my own. In principle there is no reason why a dog with stable diabetes and controlled hypothyroidism shouldn't be able to undergo anesthesia for a dental cleaning. I've had patients with these diseases and we've continued to clean their teeth year after year. Age alone isn't a reason to avoid a dental, and I routinely do dogs older than yours. Even dogs with low-grade heart murmurs can safely undergo anesthesia for routine procedures.
However, I don't want to specifically recommend that for you because I would want to know your pet's entire health situation including heart, lungs, and recent blood tests for kidneys and liver. It also depends on what kind of anesthesia and monitoring is used. A pet induced with propofol, maintained with sevoflurane gas, and monitored with ECG, pulse oximeter, and blood pressure is going to be at less risk than a pet maintained on isoflurane gas and minimally monitored. Dental cleanings are very important as periodntal disease can be painful and spread bacteria throughout the body. Correlations have been made between severe dental infections and increased risk of kidney disease, liver disease, and heart murmurs. So there are a lot of factors in play here making it impossible for me to give you a straight answer.
Talk to your vet in more detail, ask what kind of anesthesia and monitoring they do, and specifically why your vet feels that the risk isn't worth doing the procedure. I do have patients with severe health conditions where I have decided that they are at an increased anesthesia risk to the point of making a dental more risky than not doing it. But those are by far the exception rather than the rule at my practice.