By definition, they are the same. Dogma is the set of beliefs that Christians hold as truth. Some groups have added or taken away from that dogma, and as such we do not recognize that they believe the truth.
But it does beg the question (actually several) "Whose dogma, if anybodies, is the truth and whose is not"? It also begs the question "Why invent dogma when you have the word of the Lord Himself?" After all why do we rely on what this or that church or group tells us the Bible says when we can see with our OWN God given eyes what the Bible says? That different churches claim the Bible says different things means the only way you can tell which is speaking the truth and which is not is to test them ALL against what the Bible actually says. So why not cut out a whole lot of uneccessary work and make our "dogma" the Bible itself?
As I often point out to people, you cannot know what is not the truth unless you first know what IS the truth.
Just adding some thoughts to the mix.