This is timely for me as my two Cavaliers, Laverne and Hazel, have to have dentals...coming in April and May. Hazel has a mild murmur (around grade 2) and needless to say I'm very anxious about it all. Hazel has had a dental in the past, though, and came through just fine. Hazel and Laverne will turn 6 and 8 years, respectively, in August. I know they need it done, but I am a bit nervous about it. My Mixed Breed, Lucy, who will be 12 yrs. in July, had a dental in Janurary and had several extractions...she came through fine, so I'm trying not to worry too much about it.