ealgeone:
No, by defining it as Dogma, that means elevating a Doctrine to a Solemn Definition that means it is by the power of the Holy Spirit directly revealed to the Church. So those 73 books are Dogmatically defined.
The Council of Florence in 1442 defined the same canon, but without the anathema because in that council, which was an attempt to establish communion with the Eastern Churches, there was not the total rejection of the Deuterocanonical books, the debate was on books like 3 Maccabees. So while the Catholic Church would have allowed the East to perhaps use it in their own Liturgy, for the Church Universal it would not be a book used to define Dogma and Doctrine at an Ecumenical Council.
Some Orthodox and Eastern Churches today still use 3 Macabees in thier Eucharistic Liturgies.
Some theologians might use the term “open” in the context that it was still debated, but as I said earlier Councils had already laid the foundation for what the Canon was for the Catholic Church. But as I said, the Solemn Definition language was not used at the Council of Florence in 1442 because the level of debate was not the same as what happened in the 16th century.
So my take, the level of Definition directly corresponds to the level of attack or questioning on Doctrinal point.
And lets be honest, many of the original protestants were wanting to throw out some of the 27 NT books as well.