We use exactly that product that you pictured on our pup..... works well, there's no replacement for a good brushing.
We also use the mintees things as well as other brands products that claim to clean teeth. If you ask me it's all a ploy to give your dog more treats... brushing seems like it's the only way to get good results.
I never knew of anyone brushing their dogs' teeth until just the last few years, and I've never tried to do it myself. However, today happens to be our Chihuahua's birthday; she's 9 years old today. But on June 12, 2013, I let the vet clean her teeth, and even pulled 2 small ones. Of course they put her to sleep to work on her. And we now buy her dog food from the vet. It's one that's supposed to help clean her teeth. Does it work? Your guess is as good as mine.
We were forced with an ultimatum. Get the dog to let us brush her teeth on the regs, or face a 700$ cleaning bill so her teeth didn't fall out. The choice was obvious.
Oldnslow.. from what i hear it can vary from breed to breed. Growing up we had Collies and Shetlands... never brushed any of their teeth. Since then i've had several Jack Russel Terriers, and all of them have needed it.
Welp, I tried that product that I posted and with ONE application I was able to flick the plaque buildup off one of the dogs back teeth with my thumbnail.... Within another hour it was as hard as rock again. Normally I use a buck knife to chip it off and it's not easy. Maybe it was a fluke, but it was an amazing result.
We had a problem of our dog chewing on stuff around the house. (shoes, etc.) Ended up getting a couple of Kongs and put a bone treat in them when we left the house. Helped stop the chewing on stuff and the dog's teeth has no plaque. The dog is about 10 years old now and still no plaque.