I never get my dogs dewormed by the vet unless something shows up on their yearly fecal. I generally deworm them with pyrantel pamoate a couple times a year, but otherwise unless there's an issue that's it. So I wouldn't worry about missing an appointment. Unless your dog is out eating wild animals or with other wormy dogs, worms shouldn't be a big issue.
Another thing most people don't know is that few worms is not harmful and perfectly normal, even for humans. Obviously I'm not saying they're a good thing, but they're not as big a worry as many think.
Another thing most people don't know is that few worms is not harmful and perfectly normal, even for humans. Obviously I'm not saying they're a good thing, but they're not as big a worry as many think.